13 best battery maintainers
Battery maintainers, also known as battery tenders or trickle chargers, are devices designed to maintain the charge of a battery and ensure it stays in good condition when not in use. These devices are particularly useful for vehicles, such as cars, motorcycles, boats, and RVs, that are stored for extended periods, as well as for maintaining the charge of deep cycle batteries, like those used in golf carts and solar power systems. Here are some key points about battery maintainers:
Automatic Charging: Battery maintainers are equipped with microprocessor-controlled technology that monitors the battery's charge level and automatically adjusts the charging rate to prevent overcharging. Overcharging can damage the battery, so these devices are designed to provide a slow, steady charge to keep the battery at an optimal level.
Float Charging: Battery maintainers use a float charging or trickle charging method. Float charging means the maintainer supplies a constant, low-level current to the battery, compensating for self-discharge and maintaining a full charge without overcharging.
Preventing Sulfation: Regular use of a battery maintainer helps prevent sulfation, a common cause of battery failure. Sulfation occurs when lead sulfate crystals build up on the battery plates, reducing its capacity and lifespan. Maintainers keep the battery at an optimal charge, preventing sulfation and extending the battery's life.
Versatility: Battery maintainers are versatile and can be used with various types of batteries, including lead-acid, AGM (Absorbent Glass Mat), and gel cell batteries. They come with different voltage ratings to match the requirements of specific batteries.
Safety Features: Most battery maintainers have safety features such as reverse polarity protection, short circuit protection, and spark-proof technology, ensuring safe and hassle-free operation.
Indicator Lights: Many maintainers have LED indicator lights to show the charging status, indicating whether the battery is charging, fully charged, or if there's a problem with the connection.
Long-Term Storage: Battery maintainers are especially useful for vehicles or equipment that are stored for long periods, such as during winter months, ensuring the battery is ready to use when needed without the risk of it going flat.
Maintenance Mode: Some advanced battery maintainers have a maintenance mode that allows for long-term connection without the risk of overcharging. These maintainers can be left connected to the battery indefinitely, providing a maintenance charge as needed.
When selecting a battery maintainer, it's important to consider the type and voltage of the battery you intend to maintain, as well as the specific features that best suit your needs.Regular use of a battery maintainer can significantly prolong the life of your batteries and ensure reliable performance when you need them.
Below you can find our editor's choice of the best battery maintainers on the market
BLACK+DECKER BM3B Fully Automatic 6V/12V Battery Charger/Maintainer with Cable Clamps and O-Ring Terminals
BLACK+DECKER
Product description
This Black and Decker Battery Maintainer and Trickle Charger will work with both 6-volt and 12-volt batteries. It is ideal for battery maintenance, charging RVs, specialty vehicles, antique and classic cars, motorcycles, lawn mowers, tractors, ATVs, snowmobiles, personal watercraft and more. There are two LED indicators—a red one for fault and a green one to show charge status.
- Charges and maintains 12 volt and 6 volt AGM, GEL and WET batteries
- Easy connection to vehicle battery using battery clips and O-ring terminals
- Stops charging automatically when battery is fully charged or topped off, switching to float mode monitoring
- Built-in circuit protection guards against overcharging, reverse polarity, or short circuit; ETL certified for performance and safety
- Mounting bracket built-in to charger for convenient placement
- AC Low voltage compensation ensures maximum performance when used with an extension cord
User questions & answers
| Question: | How long are the cords |
| Answer: | There are only two ways to Efficiently & properly charge the unit, plug it into a house 110 V outlet or Or I use a 4000 W inverter in my truck and I plug the inverter primary into the cigarette lighter and the secondary is 110 V which works great on that Max in addition to charging at the same time many charging tool batteries and led work lights. I leave it plugged in My trucks Invertor all the time while driving and all my tools including the max are always charged and hot ready to go. |
| Question: | Just want to make sure I understand this correctly - you can plug this into the cigarette lighter and don't need to connect to the battery |
| Answer: | I wouldn't count on this type of pack for anything with a motor (power tools, the blender, pumps, etc). I tried running a small fridge off a 400 watt inverter connected to a car battery and that wouldn't work. The fridge only needed ~120 watts running, but to start it's motor the "Surge draw" was ~1000 watts that would put the inverter in "overload" alarm every time. So despite the minimal time of running the blender, that "surge draw" is quite often too much for these small inverters.Also FYI, the batteries in these can give you ~200 watts of power for 1 hour (or 100 watts for 2 hours, etc). That's how long they'll last alone. I've seen in manuals that "You can extend the run time by connecting up another battery via the jumper cables", yet if you need multiple parts anyway I'd be tempted to look at a separate battery big enough for everything and a bigger inverter.One of the best suggestions I can make is get something like the "kill-a-watt" meter and see what power your blender & things need for how long. That meter costs $20, so before spending $100+ on this I think knowing what you really need (measuring the power demands) is worth it. That meter can show you both power draw while running (for inverter sizing) and KWH power use (for battery sizing). |
| Question: | how fast does it charge |
| Answer: | I don't have a CPAP or such, but have seen this question posted many times (look under the similar units like Schumacher XP2260 or Duracell 600 packs). This like those other packs has about an "18 amp-hour" battery hinting it can provide 1 amp (at 12V) for 18 hours, or 2 amps for 9 hours, or 3 amps for 6 hours, etc. Many others have said they can get at least 1 night out of the packs if you don't need to run things like a humidifier function or such that needs much more power. Since I don't have the same equipment you do to really know the power use (as well as what settings you need), one of the best ways to find out how long this would last is to get a meter like the "Kill-a-watt" and measure the power use yourself. That meter goes for under $20, so before spending $100+ on this I'd see that as worth it. Based on the info I gave above these packs can provide about 200 watts for 1 hour (or 0.2 KWH). With some of the labels like "400 watt inverter" or such you may think it lasts much longer (like at least 1 hour under that 400 watt load), but it doesn't, so don't expect too much out of it (and that's the same for all packs like this). |
| Question: | What is the float voltage? When the charger indicates it is done charging what is the voltage of the battery |
| Answer: | Yes, you can charge this with many "12V" solar panels that are out there. Just beware that if a solar panels is directly connected up, they can raise the battery voltage to levels over 15V which is considered "Overcharging". So it's best to have a voltage regulator or "Charge controller" between the panel and battery (which will stop charging once the battery is at 14.5V which is "full" for it). |
NOCO GENIUS5, 5-Amp Fully-Automatic Smart Charger, 6V And 12V Battery Charger, Battery Maintainer, Trickle Charger, And Battery Desulfator With Temperature Compensation
NOCO
Product description
Introducing the all-new GENIUS5, making it one of our most powerful, highest-performing, energy-efficient, and compact charger yet. The GENIUS5 is a 6-volt and 12-volt battery charger, battery maintainer, trickle charger, and battery desulfator, rated at 5-amp for all types of lead-acid and lithium-ion batteries, including flooded, gel, and AGM, as well as, marine and deep-cycle batteries. 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- Meet the GENIUS5 - Similar to our G3500, just better. It's 34% smaller and delivers 65% more power. It's the all-in-one solution - battery charger, battery maintainer, trickle charger, plus battery desulfator.
- Do more with Genius - Designed for 6-volt and 12-volt lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries.
- Enjoy precision charging - An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
- Charge dead batteries - Charges batteries as low as 1-volt. Or use the all-new force mode that allows you to take control and manually begin charging dead batteries down to zero volts.
- Restore your battery - Automatically detects battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life.
- Beyond maintenance - It's not just a trickle charger, it's an advanced battery maintainer. A fully-automatic, worry-free battery charger for everyday use - 24/7 - with zero overcharge.
- Compatible with all types of vehicles - charge and maintain cars, motorcycles, lawn mowers, ATVs, lawn tractors, trucks, SUVs, boats, PWCs, classic cars, and more.
NOCO GENIUS2D, 2-Amp Direct-Mount Onboard Charger, 12V Battery Charger, Battery Maintainer, Trickle Charger, And Battery Desulfator With Temperature Compensation
NOCO
Product description
The GENIUS2D is a 2-amp direct-mount onboard battery charger and battery maintainer for 12-volt lead-acid batteries, including flooded, gel, and AGM, as well as automotive, marine, and deep-cycle batteries. An ultra-compact battery charger with a 24-inch AC cable and a 24-inch DC cable with 3/8-inch eyelet terminals designed to be securely mounted near your battery. It's designed for all types of 12-volt lead-acid batteries, including flooded, gel, AGM and other maintenance-free batteries. It features an all-new integrated thermal sensor that improves battery charging in both cold and hot environments, automatic battery sulfation detection and repair, and a low start detection voltage of 1-volt. Comes complete with a snap-fit mounting bracket with truss head screws and a 3-year. 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- Meet the GENIUS2D - The all-new direct-mount onboard battery charger for an under-the-hood battery charging system and year-round battery maintenance.
- Direct-Mount - Securely mounts nearby the battery with its rugged snap-fit mounting bracket and effortlessly installs into most materials with truss-head self-tapping screws.
- Enjoy precision charging - An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
- Charge dead batteries - Charge batteries as low as 1-volt, including flooded, gel, and AGM, as well as automotive, marine, and deep-cycle batteries.
- Beyond maintenance - It's not a trickle charger, it's an advanced battery maintainer. It monitors your battery 24/7, providing intuitive and safe maintenance charging with zero overcharge. A fully-automatic, worry-free battery charger for year-round use.
- Restore your battery - Automatically detects battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life.
- Compatible with all types of vehicles - Add a permanent onboard battery charger to any vehicle to make battery maintenance simple and easy. Plus, combine with any of the GCP Series AC Port Plugs for remote charging access.
User questions & answers
| Question: | If i use this on a car, will the alternator charge it or does it only get charged through the plug |
| Answer: | The GENIUS2D does not accept a charge. It is a power source. The GENIUS2D should be plugged into AC via the AC plug to recharge the battery. |
| Question: | Is this water proof |
| Answer: | The GENIUS2D is water resistant with a rating of IP65. |
| Question: | will this work for motorcycle batteries |
| Answer: | Yes; it works for my motorcycle, and the device is tiny enough to hide in a saddlebag. |
| Question: | does everything you need come with this item |
| Answer: | Yes. |
Product features
SECURE BRACKET.
Use a drill to secure the mounting bracket using self-tapping screws (included).
ATTACH STRAP.
Loop the velcro mounting strap into the mounting bracket.
MOUNT GENIUS2D.
Clip the Genius 2D charger into the mounting bracket.
FASTEN STRAP.
Fasten the Genius 2D charger using the velcro mounting strap.
NOCO GENIUS2, 2-Amp Fully-Automatic Smart Charger, 6V And 12V Battery Charger, Battery Maintainer, Trickle Charger, And Battery Desulfator With Temperature Compensation
NOCO
Product description
Introducing the all-new GENIUS2, making it one of our most powerful, highest-performing, energy-efficient, and compact charger yet. The GENIUS2 is a 6-volt and 12-volt battery charger, battery maintainer, trickle charger, and battery desulfator, rated at 2-amp for all types of lead-acid and lithium-ion batteries, including flooded, gel, and AGM, as well as, marine and deep-cycle batteries.
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- Meet the GENIUS2 - Similar to our G1100, just better. It's 34% smaller and delivers 65% more power. It's the all-in-one solution - battery charger, battery maintainer, trickle charger, plus battery desulfator.
- Do more with Genius - Designed for 6-volt and 12-volt lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries.
- Enjoy precision charging - An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
- Charge dead batteries - Charges batteries as low as 1-volt. Or use the all-new force mode that allows you to take control and manually begin charging dead batteries down to zero volts.
- Restore your battery - Automatically detects battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life.
- Beyond maintenance - It's not just a trickle charger, it's an advanced battery maintainer. A fully-automatic, worry-free battery charger for everyday use - 24/7 - with zero overcharge.
- Compatible with all types of vehicles - charge and maintain cars, motorcycles, lawn mowers, ATVs, lawn tractors, trucks, SUVs, boats, PWCs, classic cars, and more.
Schumacher SC1355 1.5A 6/12V Fully Automatic Battery Maintainer
Schumacher
Product description
Maintain your motorcycle, power sport and boat batteries with the Schumacher SC1355 1.5A 6/12V Fully Automatic Battery Maintainer. It's fully automatic and easy to hook-up with the quick-connectors. Microprocessor controlled, multi-stage charging adds precision, safety, and battery life. Safety features include auto voltage detection to easily detect between 6 and 12V batteries and float mode monitoring to automatically maintain optimum battery charge. Built-in reverse hook-up protection prevents charger from operating if clamps are reversed. Includes charging status LED indicator. Meets the highest industry standards with its Schu Eco Energy. DOE compliant. Compatible with standard, AGM, and deep-cycle batteries.
- Features 1.5A battery maintaining
- Multi-stage charging for added precision, safety and battery life
- Auto voltage detection automatically detects 6 or 12V batteries
- Great for motorcycle, power sport and boat batteries
- Charges compatible battery types, including standard, AGM and deep-cycle batteries
User questions & answers
| Question: | does the hood of vehicle need to be all the way open or can it be cracked open |
| Answer: | For the SC1355 the hood can be cracked open |
| Question: | Will this maintain both batteries in a ford f250? one answerer says yes, one says no. can we have a tie breaker please |
| Answer: | On a 1.5 amp maintainer such as this SC1355 we do not recommend charging/maintainer more than one battery at a time |
| Question: | How long does it typically take to charge a 12v battery |
| Answer: | The SC1355 will charge your battery in 2 to 12 hours |
| Question: | Is this made in China |
| Answer: | The SC1355 is made in China |
Battery Tender Junior 12V Charger and Maintainer: Automatic 12V Powersports Battery Charger and Maintainer for Motorcycle, ATVs, and More - Smart 12 Volt, 750mA Battery Float Chargers - 021-0123
- STAY CHARGED: Provides a full charge to your machine’s battery before switching to float mode to maintain proper voltage levels for safe, long term storage without overcharging. Spark proof during lead connection, reverse polarity protected and includes a 12-foot output cord and 5-year warranty
- EASY TO USE: Low maintenance design to be quick and easy to use, our universal powersport vehicle charger and maintainer is compact and lightweight. Perfect for charging all 12-volt lead-acid, flooded or sealed maintenance free batteries (AGM and gel cell) and safety timer-80 hours
- EXTENDED BATTERY LIFE: Compatible with lead-acid, flooded, and sealed maintenance free batteries (AGM and gel cell) to be ideal for use in long term storage. Complete 4-step charging program (Initialization, Bulk Charge, Float Mode) allows for optimization of battery power, without overcharging
- MONITOR POWER LEVELS: Solid state two-color LED light indicates the state of the charge and if the battery voltage drops too far under load, ISM adaptive charging will resume full charger output power. Automatic charge cycle functionality switches to float mode after fully charging the battery
- SAFE AND SECURE: Our 12v battery charger and maintainer is spark-proof during lead connection and automatically detects reverse polarity to ensure a correct. Solid state two color LED indicates stage of charger and if the battery voltage drops too far under load, full charger output power resumes
User questions & answers
| Question: | Why is it not recommended to keep a trickle charger hooked up all the time |
| Answer: | beats me. i keep mine hooked up from 12/31 to 4/1 and only then do i take it off. my understanding is that you do not need to disconnect it-it powers down on its own, but you mught want to find the user nistructions and check me on that. good product if youre not in a hurry |
| Question: | how fast does it work |
| Answer: | if your battery is low it may take up to 3 0r 4 days since it's a low amp charge and designed to keep the battery at full charge once it's at full charge. This charger is super for use when you don't drive the vehicle a lot and it sits for any length. it can be used on the battery in the car or taken out, once it's on it can stay plugged in all winter of summer just unplug it when you go driving. If the car stays outside they make a waterproof model. If your looking for a fast charger this is not what you want, if you do buy this make sure it's the 12 volt model ... hope this will help you |
| Question: | Why is this not available in California |
| Answer: | Charge for free! Buy a low wattage solar battery charger/maintainer at Harbor Freight instead because it works very well maintaining the battery charge provided that the battery is fully charged before hooking up this solar charger.... it will only maintain the charge. Not made to fully charge a discharged battery. Point the solar panel southwest to get the most out of the sunlight during daytime. I have used this $9.99 if on sale gadget for years now on my boat and car and has not failed me yet. It comes with all the hook up accessories needed. I have not used the boat for 2.5 years at a time and the gel battery is as good as when I installed it 7 years ago. My car wet cell battery also is as good as when I first installed it and I only use the car abroad every 12 months when I am in town for 3 weeks. Car or Boat batteries Gel or not will not last it's lifetime if it is always discharged and recharged. Maintaining the charge is key to it's longevity. Good luck! No need to blame anybody. The State of California is an environmentally conscious state and that is a good thing for everybody. |
| Question: | Can this be used to charge an AGM battery |
| Answer: | Stupid me, but don't all lead acid batteries use the same chemistry? I've read only that 6-cell lead-acid batteries should never use a charging voltage exceeding 14.4 volts, since water will begin to H2 gas and O2 gas above that. You risk explosion and loss of electrolyte beyond that. Explain why this is different for AGM, Flooded, and Gel batteries! |
NOCO GENIUS10, 10-Amp Fully-Automatic Smart Charger, 6V And 12V Battery Charger, Battery Maintainer, Trickle Charger, And Battery Desulfator With Temperature Compensation
NOCO
Product description
Introducing the all-new GENIUS10, making it one of our most powerful, highest-performing, energy-efficient, and compact charger yet. The GENIUS10 is a 6-volt and 12-volt battery charger, battery maintainer, trickle charger, and battery desulfator, rated at 10-amp for all types of lead-acid and lithium-ion batteries, including flooded, gel, and AGM, as well as, marine and deep-cycle batteries.
Other commonly used search terms: battery charger, car battery charger, battery charger automotive, battery maintainer, 12v battery charger, 12 volt battery charger, 6v battery charger, 6 volt battery charger, auto battery charger, agm battery charger, deep cycle battery charger, bike battery charger, motorcycle battery charger, car battery maintainer, automotive battery charger, motorcycle charger for battery, battery charger for cars, automatic battery charger, trickel battery charger automotive, trickle charger, trickle charger for car, trickle charger for car battery, trickle charger for 12 volt batteries, trickle charger for motorcycle battery, trickle charger 12v, trickle charger 6v, trickle charger for motorcycle, trickle charger for automobiles, trickle charger for lawn mower, battery maintainer 12 volt, battery maintainer 6 volt, battery maintainer automotive, battery maintainer charger, car battery chargers automotive, car battery charger portable, car battery charger maintainer, car battery charger 12v, car battery charger 12 volt, car battery charger 6v, car battery charger 6 volt, car battery charger automotive 12v, agm battery charger maintainer, agm battery charger automotive, agm battery charger 12v, deep cycle battery charger maintainer, deep cycle battery charger 12v, motorcycle battery maintainer, motorcycle battery trickle charger, motorcycle battery charger and maintainer, car battery trickle charger and maintainer, car battery charger maintainer, trickle charger for m arine battery, trickle charger for atv battery, atv trickle charger, motorcycle trickle charger, trickle charger for truck, boat trickle charger, boat battery charger, marine battery charger, boat battery maintainer, marine battery maintainer, marine battery charger maintainer, 12v trickle battery charger, 12v trickle charger, 12 volt trickle charger, 6v trickle charger, 6 volt trickle charger, 12v battery charger automotive, lithium battery charger, lithium battery charger 12v, lithium battery charger motorcycle, smart battery charger, smart battery charger 12v, smart battery charger automotive, smart battery charger/maintainer, smart battery charger/maintainer 12v fully automatic, car battery charger/maintainer, battery charger/maintainer, rv battery charger, rv battery charger and maintainer, rv battery charger deep cycle, winter battery charger, automatic battery charger, smart charger 12v, smart charger 12 volt, charger for car battery, cars battery charger, battery trickle charger, smart battery charger car, battery desulfator, car battery maintainer charger, atv battery maintainer, 12v agm battery charger, battery charger automotive trickle, rv battery charger maintainer, battery trickle charger maintainer, scooter battery charger, automatic battery maintainer, battery trickle charger 6v, cars battery charger, battery tester charger automotive, auto battery charger 12v, automotive charger, automatic 12v battery charger, smart charger trickle, car battery trickle charger and maintainer, car battery trickle charger and maintainer, battery trickle charger battery trickle charger, auto battery trickle charger maintainer, battery+trickle+charger, boat battery trickle charger and maintainer, motorcycle battery trickle charger and maintainer, marine battery trickle charger and maintainer, marine battery trickle charger and maintainer, automatic car battery trickle charger, portable automotive battery trickle charger, 6v/12v battery trickle charger, 12v deep cycle battery trickle charger, battery trickle charger with clamps, motorhome battery trickle charger automotive, battery maintainer for cars, battery maintainer for motorcycles, battery maintainer for boats, battery maintainer waterproof, trickle charger waterproof, best battery mainatiner, best trickle charger, best car battery charger, auto battery mainatiner, 12v battery mainatiner, battery mainatiner motorcycle 12v, 6v battery maintainer, lithium battery maintainer, generator battery maintainer, porsche battery maintainer, 12volt battery maintainer, desulfating battery charger/maintainer, fully automatic battery maintainer, batteries maintainer, diesel battery maintainer, battery maintainer float charger, 6v/12v battery charger/maintainer, deep cycle battery charger and maintainer, battery desulfator charger, battery desulfator 12v, agm battery desulfator, battery desulfator 6v, battery reconditioning charger, battery rejuvenator desulfator, battery reconditioning charger, 12v battery reconditioner, smart charger trickle, motorcycle smart battery charger, agm smart charger, marine battery smart charger, smart charger atv, smart charger motorcycle, smart charger, smart battery chargers, marine smart charger, auto battery smart charger, automotive battery chargers, portable automotive battery charger, automotive battery chargers.
- GENIUS10 - Similar to our G7200, just better. It's 17% smaller and delivers 115% more power. It's the all in one solution battery charger, a battery maintainer, trickle charger, plus battery desulfator
- Do more with Genius - Designed for 6-volt and 12-volt lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries
- Enjoy precision charging - An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates
- Charge dead batteries - Charges batteries as low as 1-volt. Or use the all-new force mode that allows you to take control and manually begin charging dead batteries down to zero volts
- Restore your battery - Automatically detects battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life
- Beyond maintenance - It's not just a trickle charger, it's an advanced battery maintainer. A fully-automatic, worry-free battery charger for everyday use - 24/7 - with zero overcharge
- Compatible with all types of vehicles - charge and maintain cars, motorcycles, lawn mowers, ATVs, lawn tractors, trucks, SUVs, boats, PWCs, classic cars, and more
NOCO GENIUS1, 1-Amp Fully-Automatic Smart Charger, 6V And 12V Battery Charger, Battery Maintainer, Trickle Charger, And Battery Desulfator With Temperature Compensation
NOCO
Product description
Introducing the all-new GENIUS1, making it one of our most powerful, highest-performing, energy-efficient, and compact charger yet. The GENIUS1 is a 6-volt and 12-volt battery charger, battery maintainer, trickle charger, and battery desulfator, rated at 1-amp for all types of lead-acid and lithium-ion batteries, including flooded, gel, and AGM, as well as, marine and deep-cycle batteries.
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- Meet the GENIUS1 - Similar to our G750, just better. It's 35% smaller and delivers 35% more power. It's the all-in-one solution - battery charger, battery maintainer, trickle charger, plus battery desulfator.
- Do more with Genius - Designed for 6-volt and 12-volt lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries.
- Enjoy precision charging - An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
- Charge dead batteries - Charges batteries as low as 1-volt. Or use the all-new force mode that allows you to take control and manually begin charging dead batteries down to zero volts.
- Restore your battery - Automatically detects battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life.
- Beyond maintenance - It's not just a trickle charger, it's an advanced battery maintainer. A fully-automatic, worry-free battery charger for everyday use - 24/7 - with zero overcharge.
- Compatible with all types of vehicles - charge and maintain cars, motorcycles, lawn mowers, ATVs, lawn tractors, trucks, SUVs, boats, PWCs, classic cars, and more.
Schumacher SP1297 3 Amp 6V/12V Fully Automatic Smart Battery Charger Maintainer and Auto Desulfator Auto 6V/12V Battery Detection For Cars, Motorcycles, Lawn Tractors, Power Sports, Marine Batteries
Product description
The Schumacher SP1297 12V Fully Automatic Battery Charger and 3A Maintainer is great for motorcycle, car and marine batteries. It’s energy efficient and fully automatic. The clamp and ring terminal adapters are easy to connect, and the convenient hook attachment lets you hang the unit outside of the work area. The microprocessor automatically adjusts the amperage rate with multi-stage charging and float mode monitoring for optimum charging and maintaining to extend battery life. This battery charger features reverse hook-up protection which prevents the charger from operating if the clamps are reversed. The scrolling digital messaging provides step-by-step instructions to properly charge your battery. This unit includes a hook attachment which allows it to hang outside of the work area for safety and convenience.
- Delivers 3A to charge and maintain your motorcycle, car and marine battery
- Microprocessor-controlled, with multi-stage charging for added precision, safety, and battery life
- Reverse hook-up protection prevents the charger from operating if the clamps are reversed
- Float-mode monitoring automatically maintains optimum battery charge
- Includes hook attachment to hang outside the work area for safety and convenience
User questions & answers
| Question: | Can this. Be used to jumpstart a car |
| Answer: | I've only used it to jump my riding lawn mower. The product description does say it can be used to jump cars. Perhaps you can call the manufacturer. |
| Question: | Is this something I can charge and use or does it have to be plugged into an outlet to work |
| Answer: | The SP1297 does not store power - it has to be plugged into an A/C power in order to operate |
| Question: | Will it work with battery U1R-1T titan battery |
| Answer: | Yes, the SP1297 will work with this specific battery |
| Question: | How warm or hot does the unit get while recharging 12V battery |
| Answer: | Mine does not get hot at all. If I leave it on for hours it does get warm but never so hot I cannot touch it. |
Schumacher SC1300 1.5A 6/12V Fully Automatic Battery Maintainer
Schumacher
Product description
The Schumacher SC1300 1.5A 6/12 12V Fully Automatic Battery Maintainer is great in cold weather for maintaining 6V and 12V batteries. This unit is microprocessor-controlled to automatically adjust the amperage rate to charge and maintain with multi-stage charging for added precision, safety, and battery life. Its float mode monitoring automatically maintains optimum battery charge. Auto-voltage detection automatically detects output. The reverse hook-up protection ensures charger will not operate if clamps are reversed, as LED indicators will flash.
- Provides 1.5A to maintain your 6V or 12V battery
- Microprocessor-controlled, with multi-stage charging for added precision, safety, and battery life
- Auto voltage detection automatically detects 6 or 12V batteries
- Reverse hook-up protection ensures charger will not operate if clamps are reversed
- Includes double-sided adhesive and cable tie for mounting
User questions & answers
| Question: | is this really 6 x 9 inches in size. seems awfully big for an on-board charger |
| Answer: | NO IT'S NOT!! Not even the box it came in is that large! The case dimensions are 5" X 3 1/2" (or 4 3/4" if you count the mounting tabs) X 1 1/2 " I bought this with great trepidation, as it was supposed to replace the Schumacher SE-1-12s mounted to my Power Tow Thundervolt electric airplane tug. The published dimensions of this charger made it seem as though it was MUCH larger than the original unit. But, in fact, the case was the exact same size except for the mounting tabs. |
| Question: | What is the warranty |
| Answer: | Any product nominally comes with a 1yr warranty, but I would never buy a product because of the warranty especially when there are no moving parts. If it works, then it should continue working unless the buyer operates the product outside the parameters designed for the unit. |
| Question: | Will it work on my 2013mb c |
| Answer: | Making the rash assumption your MB C250 is a gasoline powered vehicle with a 12 Volt battery the short answer is “yes”. The trickle charger is designed to mount in the engine compartment and be left there. It is designed to “maintain” a 12Volt battery in good condition and already fully charged. |
| Question: | can I permeantly keep this unit connect while driving or need to use diods to stop block back feed from battery |
| Answer: | Yes it is designed to be connected to your battery. You just unplug the extension cord to start or drive the vehicle. When you get back just plug it up and it will help maintain the battery. Nice product for vehicles that aren't driven often. |
NOCO GENIUS2X2, 2-Bank, 4-Amp (2-Amp Per Bank) Fully-Automatic Smart Charger, 6V And 12V Battery Charger, Battery Maintainer, Trickle Charger, And Battery Desulfator with Temperature Compensation
Product description
Introducing the all-new GENIUS2X2, making it one of our most powerful, highest-performing, energy-efficient, and compact charger yet. The GENIUS2X2 is a 6-volt and 12-volt two-bank battery charger, battery maintainer, trickle charger, and battery desulfator. It is rated at 4-amps (2-amps per bank) all types of lead-acid and lithium-ion batteries, including flooded, gel, and AGM, as well as marine and deep-cycle batteries.Other commonly used search terms: battery charger, car battery charger, battery charger automotive, battery maintainer, 12v battery charger, 12 volt battery charger, 6v battery charger, 6 volt battery charger, auto battery charger, agm battery charger, deep cycle battery charger, bike battery charger, motorcycle battery charger, car battery maintainer, automotive battery charger, motorcycle charger for battery, battery charger for cars, automatic battery charger, trickel battery charger automotive, trickle charger, trickle charger for car, trickle charger for car battery, trickle charger for 12 volt batteries, trickle charger for motorcycle battery, trickle charger 12v, trickle charger 6v, trickle charger for motorcycle, trickle charger for automobiles, trickle charger for lawn mower, battery maintainer 12 volt, battery 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charger, automotive battery chargers, lawn mower battery charger, lawn tractor battery charger, 2 bank battery maintainer, 2 bank battery charger, 2 bank trickle charger, battery charger for two batteries, 2 bank battery maintainer.
- Meet the all-new GENIUS2X2 - a two-bank battery charger, battery maintainer, trickle charger, and battery desulfator - the perfect all-in-one solution for battery maintenance.
- Multiple banks - A two-bank battery charger maintainer rated a 4-amps - 2-amps per bank - designed to charge and maintain multiple vehicles like cars, motorcycles, boats, ATVs, RVs, lawn mowers, lawn tractors, trucks, and more.
- Do more with Genius - Designed for 6-volt and 12-volt lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries.
- Enjoy precision charging - An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
- Charge dead batteries - Charges batteries as low as 1-volt. Or use the all-new force mode that allows you to take control and manually begin charging dead batteries down to zero volts.
- Restore your battery - Automatically detects battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life.
- Beyond maintenance - It's not just a trickle charger, it's an advanced battery maintainer. A fully-automatic, worry-free battery charger for everyday use - 24/7 - with zero overcharge.
[4-Pack] LEICESTERCN Automatic Trickle Battery Charger Maintainer 12V 750mA Smart Float Charger for Car Motorcycle Lawn Mower Tractor Boat SlA ATV WET AGM GEL Cell Lead Acid Batteries
- √ CHARGE AND MAINTAIN - Charge for all types of 12V lead-acid batteries, including flooded or sealed maintenance free batteries (AGM & gel cell). A smart car battery charger for automotive, motorcycle, marine, RV, Powersport, lawn&garden, children toys, etc.
- √ 3-STAGE SMART CHARGING - Fully auto CC-CV(H)-CV(F)charging process, the battery maintenance charger monitor the whole charging process, automatically switches to float mode after fully charging the battery.
- √ INTUITIVE LED INDICATORS - With Bi-color LED indicator, CHARGING/FULL light yellow:charging, Green: fully charged/floating; REVERSE POLARITY light red: reverse polarity, provide visual state-of-charge feedback and diagnostic information, even when in maintenance mode.
- √ SAFETY PROTECTION & BATTERY RESUE - Just plug and leave it for charging and maintaining your batteries automatically, no worry about overcharge, over voltage and reverse polarity, the battery maintainer charger will extend battery life and recover batteries effectively. Key Product Features
- √ ETL SAFETY CERTIFIED &100% SATISFACTORY FLOAT CHARGER - Certified by ETL, CE, FCC, RoHS, 3-Year quality assurance, hassle-free return or refund for any product issue, 24/7 timely customer service, eliminate all your worries about getting this car battery charger.
User questions & answers
| Question: | What is the length of the cables (wires |
| Answer: | THE AC PLUG WIRE I ABOUT 6 FEET. THE BATTERY CONNECT WIRES ARE ABOUT 3 FEET. |
| Question: | Does it only have the alligator clips |
| Answer: | Packaged with alligator clips for an alternate connection and o-ring terminal harness for hard to reach spaces |
| Question: | Would this unit charge a 12v 120Ah battery |
| Answer: | The MFG. recommends 4-18AH for this charger. If the charger doesn't sense something that turns it off, it might take 3-4 days to charge a 120AH completely. I put it on a car battery that took a day to bring up to float voltage, so it might be fine, but slow with a 120AH battery. |
| Question: | Can I charge the lithium battery |
| Answer: | Absolutely not, just for 12 volt lead acid batteries |
MOTOPOWER MP00205A 12V 800mA Automatic Battery Charger, Battery Maintainer, Trickle Charger, and Battery Desulfator with Timer Protection
MOTOPOWER
- 🔥[ Charger, Maintainer & Desulfator ] - An all-weather battery charger, battery maintainer, trickle charger, and battery desulfator. Perfect for charging and maintaining all 12-volt lead-acid, flooded or sealed maintenance free batteries (AGM and gel cell). ETL safety standard Listed.
- 🔥[ Automatic Desulfation & Optimization ] - Automatic detection of battery sulfation problem. Applying with pulse current technology to desulfate the batteries effectively. Optimize the battery performance during charging without any manual operation.
- 🔥[ Energy Saving & Spark Free ] - Zero output in standby mode. No battery drain when connecting with the battery. Spark proof during lead connection for safety.
- 🔥[ Multi-level Safety Protection & Timer Set Up ] - Overcharge, short circuit and reverse polarity protected. Charge the battery up to 14.4V and Maintain the battery at 13.6V for long time to avoid gasing and to extend the battery life. 24-hour Timer is set up in the program to terminate the charge and enter the maintaining mode once the voltage is above 14V to ensure safety.
- 🔥[ Easy for operation ] -Just plug-in, connect to the battery and start charging or maintaining your battery. The desulfation is working automatically during the charing. No manual operation.
Product features
Low-Voltage Activation & Recovery
Pulse current applied for batteries between 4 - 8volts. Increase the battery voltage gradually to optimize the cells and restore their best performance.
Absorption Mode
Force pulse current in the absorption stage to desulfate the cells. Removing the troublesome crystals and absorb into the charge cycle.
Maintain at 13.6volts Indefinitely
Maintain the battery with float current close to 0.1 - 0.5amp and keep the battery at 13.6V+/-0.2V indefinitely. Restart charging when voltage drops.
Charging Stages
Five CHARGING STAGES - Diagnosis, Soft Start, Bulk Charge, Absorption and Float/Maintenance. Bring the batteries to back to life.
Energy-Save & Safety
No output without load. No battery drain when connecting with battery. Spark free for safety.
Recondition Batteries
Sulfation detection and repair cells damage. Optimize the battery chemistries.
Thermal Compensation
Stable performance for any climate. Low temperature activation.
Timer Protection
24-hour absorption/desulfation. Stop automatically when fully charged or when time's up.
Direct Factory Source from MOTOPOWER Factory - Quality Ensured & Cost Effective
Product Features:
The MOTOPOWER MP00205A 12V 800mA Battery Charger allows you to connect the charger to the battery and leave it for maintenance indefinitely.
Once the battery has reached a 100% charge, the chargers will automatically switch it's output voltage to a safe, storage/float level (13.6V+/-0.2V) that eliminates the need to worry about the damaging effects of overcharging.
Pulse Current Recovery Mode:
In the Absorption Mode, the charger will give a 0.5Amp pulse current to charge and recover the battery until it's fully charged. In this stage, the charger will decrease the battery sulfation and improve the battery performance gradually. For several times charging, you will find the battery internal resistance is lower and the performance is improved.
Technical Details:
- Input Voltage: 100-240V AC / 60Hz. - Output Voltage: 12 Volts DC @ 800mA - Charged Voltage: 14.2+/-0.2 Volts
- Maintenance Voltage: 13.6+/-0.2 Volts - Activate Voltage: 4Volts ( Do not suggest charging dead batteries )
Package Includes:
- Battery Charger x 1 - SAE Alligator Clamp Cable x 1 - SAE Eyelet Terminal Cable(7.5A fused) x 1 - Instruction Manual x 1
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