13 best battery charger maintainers

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).

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.

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.

Product description

NOCO Genius smart battery chargers are some of the safest and most advanced on the market. One of our best, the G15000 15 Amp is designed to charge 12-volt and 24-volt lead-acid and lithium-ion batteries up to 400Ah. It can also effectively maintain automotive, marine, RV, lawn & garden and deep-cycle batteries. It charges 2x faster than ordinary battery chargers, can jump start dead batteries, repair damaged batteries, power DC devices and is designed to use with micro-hybrid start-stop vehicles and CANBUS electrical systems. Guided by an onboard microcomputer, the G15000 monitors battery activity for safe and efficient charging, automatically minimizes energy consumption and provides redundant levels of safety protection, including spark-proof technology, as well as reverse polarity and overcharge protection. It can remain safely connected 24/7, while its streamlined design makes it ultra-compact, portable and incredibly lightweight. The G15000 features external mounting holes and a rubberized base that avoids surface slipping and scratches, all while remaining impact, UV and water-resistant (IP44). Intuitive LED indicators provide visual state-of-charge feedback and diagnostic information, even when in maintenance mode. Designed for use on 120-volt, 50-60Hz electrical systems, the G15000 includes HD X-Connect battery clamps with detachable eyelet terminals and a 5-year limited.

• A powerful, professional grade battery charger and battery maintenance tool designed to recharge all types of batteries rapidly in workshops, garages or those you simply want the best.
• Perfect for keeping your vehicles fully charged and maintained during year-round battery maintenance or long-term storage for improved performance and longevity. Power consumption: 255 watts (Max)
• Works with all types of 12-volt and 24-volt lead-acid batteries, including wet, gel, and AGM, or any common automotive, deep-cycle, marine, or maintenance-free battery.
• Keep your battery fully charged without worry or overcharge. Simply plug-in and let our advanced charging technology automatically monitor and maintain your battery. Progressive repair mode for heavily sulfated 12v batteries.
• Use our advanced repair mode to reverse the damaging effects when batteries are left uncharged for extended periods to improve battery performance and longevity.
• Convert the battery charger into a 5-amp constant-current, constant-voltage power supply for maintaining onboard computer member during battery changes or as a DC power source.
• An optimized charge mode for safely charging and maintaining 12-volt lithium-ion batteries, and recommended with use on lithium batteries with an internal BMS.
• One of the most advanced and safest battery chargers, including spark-proof technology, and reverse polarity protection, plus backed by our 5-year and endless accessories.

User questions & answers

Question:	Which model is a maintainer and jump starter
Answer:	G15000 and G26000 both are a maintainer and Jump Starter. I verified. but you need to wait 5 minutes to JUMP START a DEAD battery vehicle. Beware, YOU CAN ONLY insert the power plug into the wall power outlet AFTER you connect the battery. When you are connected, then insert the power plug and then, PRESS the JUMP CHARGE and WAIT for 5 minutes. YOU WILL BE impressed after 5 minutes.
Question:	will it jump the engine
Answer:	Yes. It can. I verified this function. It's called 5 minutes' JUMP CHARGE. but always remember, Insert the power plug ONLY AFTER you connect the battery. when you are done connecting the + and - terminal of the battery, THEN you can insert the power plug into the wall power outlet. It will take 5 minutes to charge the DEAD battery from Zero back to LIVE enough to JUMP-START your vehicle. I approved this message. It works!
Question:	The descripition says it can jump start. Has anyone used that feature
Answer:	The G15000 features a 5 minute, 20A Jump Charge mode that can be used to rapidly increase the voltage on a heavily discharged battery. It jump starts all kinds of 12V vehicles though the process may need to be repeated two to three times for larger vehicles.
Question:	Is this actually made in the usa or assembled in the usa or made in china
Answer:	Too late I'm sure, but maybe someone else will benefit - it doesn't have a battery, you can't "charge the charger". Mains powered only. Lol. Item itself is not labeled as to location of manufacture. Purchased December 2020. As of February 2021 it's discontinued.

Product features

9 Chargers In One

Charges 12V & 24V lead-acid batteries (including AGM and more) and 12V lithium. Repairs desulfated batteries, charges in cold conditions, and has a 13.6V Supply mode. Also includes JumpCharge (see below) for starting dead batteries.

Diagnostics

Intuitive visual diagnostic tool for detecting reverse polarity, low-voltage or damaged batteries.

Recovery

Applies a high-voltage pulse charge when low-voltage, sulfation or lost capacity is detected.

CANbus

Automatically enables the charging port to charge CANbus systems.

Maintenance Plus

Keeps the battery fully charged without overcharging, indefinitely.

Optimization

Stabilizes internal battery chemistry for increased performance and longevity.

Interactive

Alters the charging process based on organic battery feedback.

Energy-Save

Minimizes energy consumption when full power is not needed.

Product description

Charge your car battery with the DieHard 71219 6/12V 2A Shelf Smart Battery Charger and Maintainer. The microprocessor controlled, fully automatic, 5-stage charging process precisely charges and monitors your vehicle's battery. Safety features are built-in alert you when the clamps are reversed and prevent overcharging. This unit includes 50A clamps, 12V accessory plug and permanent ring connector.

• Micro processor controlled, fully automatic, 5-stage charging process for precise charging and monitoring batteries
• LED indictor will flash if clamps are reversed and charger will not operate
• Features battery maintaining to prevent overcharging, charging will resume if battery becomes discharged
• Versatile quick-connect harness with 50A clamps, 12V accessory plug or permanent ring connectors
• Quick connect harness's install fast for hard-to-reach motorcycle batteries

User questions & answers

Question:	How can i know what items on amazon are not made in china. i will not purchase items from amazon that are made in china
Answer:	If you’re not gonna buy anything from China you don’t buy much do you about 90% of everything in the United States comes from China pull your head out
Question:	How long would it take to charge a 12v 45 /50 amp
Answer:	Thank you for your inquiry. If the battery is 100% discharged, it will take approximately 12.4 hours at a 2 amp charge rate to fully charge the battery.
Question:	Will this trickle charge a deep cycle marine battery
Answer:	Thank you for your inquiry. This portable charger is perfect for use on 6 and 12 volt lead-acetate batteries. Keep your batteries fully charged and ready to go when you need them. A marine (boat) battery must be removed and charged on shore.
Question:	Don’t see the wall plug to connect to wall outlet
Answer:	Yes, the 71219 needs to be plugged into A/C outlet

Product features

Charge with Ease

This fully automatic, microprocessor controlled, 5-stage charging system with LED indicator lights provides precise charging and battery monitoring, guiding you through the charging process with ease.

Charging You Can Count On

Reverse Hookup Protection helps you charge more safely, shutting your charger off if clamps are incorrectly connected. Float Mode Monitoring keeps your battery at a normal voltage, maintaining the battery's charge. Get this charger that is backed by a 3-year warranty.

So Many Ways to Charge Up

The Quick Connect Harness is perfect for hard to reach motorcycle batteries, thanks to fast installation and 3 connector options: 50-amp clamps, a 12-volt accessory plug or permanently attachable ring connectors.

• 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!

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.

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.

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.



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• 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

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.

• 【UPGRADED DEFECTIVE BATTERY DETECT/FAST CHARGING CAR BATTERY BOOSTER】Updated with battery condition diagnose to detect the defective battery before charge. Input 100-240V AC, With 5A DC output current, BMK 12V 5A car battery charger is suitable for charging batteries with 15-100Ah. NOTE: To better tender the battery, please make sure the battery capacity is higher than 15Ah, it can also charge over 100Ah batteries, just more charging time. ETL Certified for performance and safety
• 【UPGRADED 72-HOUR SAFETY FEATURES/MULTI SAFETY PROTECTIONS - BATTERY RESCUE & RECOVER】Updated with 72 hours safety feature to commence anytime the charger is onto protect marginal batteries from over charging. Made of high quality ABS, multi-protects of Short Circuit/ OV/ OC/ Overload/ Polarity Reverse, featured with Constant Pulse Current Maintenance function to avoid overcharge and discharge; Full-loaded and burn-in test prove its high reliable efficiency, stable performance
• 【4-STAGE SMART CHARGING - FULLY AUTOMATIC BOAT BATTERY CHARGER】 12V battery charger operated with 4 stages automatic charging process by MCU controller, 25%/50%/75%/100% to indicate quantity of electricity and monitor the whole charging progress. Stop automatically when the battery is fully charged. LED indicator designed to display different charging status of the 12v smart charger
• 【UPGRADED WITH 10A FUSE ONTO RING CONNECTORS & MULTI-PURPOSES DEEP CYCLE BATTERY CHARGER】Pb/SLA/VRLA/GEL/AGM lead acid battery charger tender, operated with vulcanization function, BMK battery maintainer charger is a great choice for lawn mower, boat, car, motorcycle, electric vehicle, electric tools and emergency battery charging, lightweight(15.87oz) allows you take it to anywhere, used as Trickle Battery Charger as well
• 【QUALIRY ENSURANCE & IN TIME SERVICE】BMK is devoted to provide boat battery trickle charger with higher qulality to meet buyers' needs better and timely after-sale services, eliminate all your worries about getting this trolling motor battery charger. Just get your Automotive Car Battery Charger Maintainer with confidence, and contact us if you have any problems about the item when using

Product features

BMK 5A SMART BATTERY CHARGER IN HAND, ALL BATTERY TROUBLES GO AWAY.

STAGE 1 - DIAGNOSTIC

Desulfating the Battery Through 18V Pulse

The Charger can be used with 12-100Ah, however 12-60Ah is highly recommended for higher efficiency and battery protection.

STAGE 2 - BULK CHARGE

Charging Highest Rate Current Till 80% Capacity

Featured with LED for indicating different charging modes

Alter the charging process based on organic battery feedback.

STAGE 3 - ABSORPTION

Absorption, Till Full Capacity

Output voltage is limited to 14.7V while current declines as the battery to be fully charged.

Stabilize internal battery chemistry to increased performance and longevity.

STAGE 4 - MAINTAIN

Float, Maintain the Battery Through Pulse Charging

Battery is fully charged at this stage.

Minimize energy consumption when full power is not needed.

DEFECTIVE BATTERIES DETECT

• The Fault Light Flashing: Reversed Polarity
• The Fault Light ON: Defective Battery

SPARKPROOF

• Prevent sparks
• Automatically check whether the connection is correct or not before powering up

QUICK DISCONNECT HARNESS

• Connect and disconnect with the battery in seconds

72-HOUR SAFETY FEATURE

• Upgraded 72 Hour Safety Timer to commence anytime the charger is onto protect marginal batteries from over charging

Product description

Charge or jump start your SUV, truck, or large battery with the Schumacher SC1281 6/12V Fully Automatic Battery Charger and 30/100A Engine Starter. Contains battery and alternator tester which provides charge level and helps diagnose electrical problems. Features 30A for quick energy boost and 100A to jump start your car right away. Microprocessor controlled, multi-stage charging adds precision, safety and battery life. Built-in reverse hook-up protection prevents charger from operating if clamps are reversed. LED indicators and Start/Stop push button interface improves accuracy and ease of use. Features auto voltage detection to easily detect 6 or 12V batteries. Meets the highest industry standards with its Schu Eco Energy. DOE compliant. Compatible with standard, AGM, gel, and deep-cycle batteries.

• Features 30A quick boost and 1H2:L1600A jump start, powerful enough to start SUVs, trucks and large batteries
• Battery and alternator tester provides charge level and helps diagnose electrical problems
• Features multi-stage charging and auto-voltage detection for added precision, safety and battery life
• Reverse hook-up protection ensures charger will not operate if clamps are reversed
• Charges compatible battery types, including standard, AGM, gel and deep-cycle batteries

User questions & answers

Question:	Does this charger have a desulfation mode on it
Answer:	The manual talks about a desulfation mode existing, but does not say how to trigger it, or whether it is part of the automatic charging system. https://www.batterychargers.com/sites/default/files/manuals/0099001912E-R3.pdf page 8.
Question:	What does the 2/6 mean? Is this the trickle or battery maintenance mode info
Answer:	Starts at a moderate 6 amp charge reducing to 3 amps as charging nears completion.
Question:	Is it portable
Answer:	Light and portable, but needs a 120volt outlet, or a long(100' extension cord) to far distances.
Question:	Is this a 4 stage charger (bulk, absorption, float, equalization
Answer:	The SC1281 does, Bulk, absorption, equalization, desulfation and maintenance features

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