13 best bmw motorcycle battery chargers

• 𝗪𝗢𝗥𝗞𝗦 𝗪𝗜𝗧𝗛 𝗬𝗢𝗨𝗥 𝗕𝗠𝗪 𝗠𝗢𝗧𝗢𝗥𝗖𝗬𝗖𝗟𝗘 - Includes the OptiMate adapter/ extender (O-09) that connects directly to the 12V DIN socket on BMW motorcycles.
• 𝗧𝗛𝗘 𝗠𝗢𝗦𝗧 𝗘𝗳𝗳𝗶𝗰𝗶𝗲𝗻𝘁 𝗠𝗢𝗧𝗢𝗥𝗖𝗬𝗖𝗟𝗘 𝗖𝗛𝗔𝗥𝗚𝗘𝗥 𝗪𝗢𝗥𝗟𝗗-𝗪𝗜𝗗𝗘 - Works for your motorcycle, ATV, Side by Side or personal watercraft.
• 𝗚𝗘𝗧 𝗬𝗢𝗨𝗥 𝗕𝗔𝗧𝗧𝗘𝗥𝗬 𝗧𝗢 𝗪𝗢𝗥𝗞 - Saves your 12V battery (AGM, GEL, STD, Starter, Deep Cycle) from as low as 0.5V when no other charger will work.; 𝗙𝗨𝗟𝗟𝗬 𝗔𝗨𝗧𝗢𝗠𝗔𝗧𝗜𝗖 - Connect and forget, no more battery problems. Continuous charging if healthy, stops and warns if faulty.
• 𝗟𝗢𝗡𝗚𝗘𝗥 𝗕𝗔𝗧𝗧𝗘𝗥𝗬 𝗟𝗜𝗙𝗘 - Provides 24/7 protection by preventing discharge from connected circuitry and guarantees more battery power; 𝗦𝗔𝗩𝗘𝗦 𝗔𝗡𝗗 𝗧𝗘𝗦𝗧𝗦 𝗬𝗢𝗨𝗥 𝗙𝗟𝗔𝗧 𝗕𝗔𝗧𝗧𝗘𝗥𝗬 - Tests automatically and indicates if there is a battery problem.
• 𝗛𝗜𝗚𝗛𝗟𝗬 𝗥𝗘𝗣𝗨𝗧𝗔𝗕𝗟𝗘 𝗖𝗛𝗔𝗥𝗚𝗘𝗥 - OptiMate is recommended by Honda, Yamaha, Kawasaki, KTM and Husqvarna and global battery manufacturers Antigravity, Super-B and Earth-X; 𝗛𝗜𝗚𝗛𝗟𝗬 𝗗𝗨𝗥𝗔𝗕𝗟𝗘 - Fully sealed case to protect against spillage and light rain.

User questions & answers

Question:	How difficult is it to program the charger? I've read that some folks thought it was confusing with the lights and poor instructions. Any Truth
Answer:	I use this for my BMW r1200r. If I recall there was never been any confusion as to using this charger. Almost plug and play...very simple.
Question:	Is this charger both lead and lithium iron compatible
Answer:	if you want charge lead and lithium both, you should buy normal lead charger.
Question:	What canbus commands does this support
Answer:	There are no commands. You just follow a setup procedure to program it to CAN-bus charging. Then, just plug it into your CAN-bus power outlet on your vehicle and the charger does the rest. I have a 2020 BMW R1250RT and it works perfectly. Good luck.
Question:	The picture shows a european plug. is the product being sold for outlets in the usa
Answer:	Yes, it comes with a 110-volt plug, suitable for USA outlets. The picture is not representative of the USA version.

Product description

K18-C Bike-C600 Sport-(-)

K19-C Bike-C650GT-(2010-14)

K21-R Bike-R nine T-(-)

K46-S Bike-S1000RR-(2010-11)

K46-S Bike-S1000RR-(2012-14)

K46-S Bike-S1000RR-(2015-)

K47-S Bike-S1000R-(-)

K48-K Bike-K1600GT-(-)

K48-K Bike-K1600GTL-(-)

K50-R Bike-R1200GS-(2013-15)

K51-R Bike-R1200GS Adventure-(2014-15)

K52-R Bike-R1200RT-(2014-14)

K70-F Bike-F700GS-(-)

K71-F Bike-F800GT-(-)

K72-F Bike-F800GS-(2013-15)

K73-F Bike-F800R-(2015-)

K75-F Bike-F800GS Adventure-(2013-15)

R134-G Bike-G650GS Sertao-(-)

• BMW Genuine Battery Charger Bmw Motorrad Battery Charger 110V/60HZ US
• Only applies to additional plug-in socket
• It is used in Battery charger --

User questions & answers

Question:	On the 220V question, do you mean a plug adaptor or a transformer that takes 220 to
Answer:	This is the USA version. It requires 110V. See Description.
Question:	Is this unit dual voltage - 220V 50 Hz
Answer:	No
Question:	Its work also in 220V?. thanks you
Answer:	You probably have to get a special adapter.
Question:	Will this work for the f650gs? how does it connect? round jack? wires directly to (+) and (-) battery terminals with a quick connect
Answer:	Your bike typically has a BMW power accessory plug that has a spring loaded cover. It is wired and fused directly to your battery and accepts the terminal fitting on this really great battery charger. Which is why it’s specs say it’s for a BMW bike. Plug it in and let it work.

• STAY CHARGED: The 1.25 amp charger provides a full charge to your powersports battery before automatically switching to float mode to maintain proper voltage levels without overcharging the battery
• EASY, FAST CHARGING: A low maintenance design to be quick and easy to use even in small storage spaces, our powersport charger and maintainer charges as fast or faster than any 3 amp charger available
• EXTENDED BATTERY LIFE: Compatible with lead-acid, flooded, and sealed maintenance free batteries (AGM and gel cell) and ideal for use in long term storage to provide and maintain an optimal charge
• 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
• SAFE AND SECURE: Our battery charger and maintainer is spark-proof during lead connection and automatically detects reverse polarity to ensure a correct, locked-in connection before providing power

User questions & answers

Question:	will this work with the new lithium batteries
Answer:	A model for lithium batteries is available.
Question:	can I leave it on my unattended battery for months
Answer:	where do you sit the charger after you hook it up to the battery, and plug it in an outlet outside? co you just sit it under the vehicle?
Question:	I need to keep a Chevy S-10 truck battery from going dead. Truck is not driven much. Will this work
Answer:	The factory Delco radio in my black 5spd 94 S10 kills my battery if I do not drive it at least once every 48 hours. Deltran chargers work great for all the equipment we use at work (24v of course) and Deltran works great to keep my Delco radio from killing my S10. A fellow employee of mine has a 2008 Silverado and has suffered from dead batteries for years if he did not drive in at least once every few days - seems that GM cannot produce a radio that does not kill a battery. He installed a Deltran charger last month and has not yet had a dead battery despite the radio sucking 950mah.
Question:	is it easy to install or do i need mechanic? i am elderly
Answer:	All you do is connect the end that has the clips for battery red positive black negative shows on top of battery as such. There is a plug coming from unit that will pug into those two items once all that is plugged in then plug unit into 110 wall socket and it will charge from there read instructions as to how to tell when batter is fully charged. This unit is not installed it is to be used when needed and can be left hooked to your battery when car is at home with out hurting battery. Once charged then un plug from battery and un plug from wall outlet till needed next time. Hope that helps some but be sure to read instructions as how to tell what the lights on unit is telling you.

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

Ideal solution to connect a battery charger (Battery Tender, Yuasa or any other charger that utilizes a two pin SAE connection) through a Powerlet socket. Available in 6" and 18" lengths

• Compatible with vehicle type: street-sport-motorcycles
• Package Weight: 0.022 pounds
• Country of Origin : United States
• Package Dimensions: 0.762 H x 19.05 L x 8.89 W (centimetres)

User questions & answers

Question:	I am looking to plug an electric jacket into the outlet on a Ducati Multistrada. Wondering if this has the necessary wattage for such an application
Answer:	Two Ducati service reps told me the jack on Ducati's wiring is not thick enough to connect to a battery tender. Also the amperage the heated gloves, coats, and pants draws a lot of amps so you should use wiring that comes with the heated clothing and connect it directly to your battery instead of the jack on the Ducati.
Question:	Anyone know the amp rating? Had a 5 amp that blew with my heated jacket and gloves load
Answer:	Only used it with my jacket and had no problem. Not sure of the amp rating.
Question:	will this power a mini compressor via a Hella port
Answer:	I don't know what a Hella port is, but if you're talking about a standard BMW Powerlet outlet, then yes, it will power the mini pump to inflate your tire.

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

The MXS 5.0 offers a unique eight step approach to battery care. Fully automatic microprocessor controlled charger with built-in automatic temperature sensor features a unique combination of advanced charging modes and makes the new MXS 5.0 the fastest, most effective and versatile consumer charger CTEK has ever made. The MXS 5.0 features capabilities for improved charging in all weather. It is the perfect charger for the user with multiple vehicle types and higher demand battery charging and maintenance requirements. Provides an outstanding charging experience!

• Unique reconditioning mode, built-in temperature sensing capabilities
• Completely sealed Unit, spark proof and reverse - polarity protected
• Premium input and output cable with robust strain relief
• 5 year warranty. Ideal for start-stop systems
• Input voltage 110-120 VAC
• Minimum battery voltage required: 2V

User questions & answers

Question:	What is the ac input voltage & frequency
Answer:	Depends where you purchase it. If purchased in USA comes with a 2 pin plug/cord and set for 120v but elsewhere set for local market voltage and plug e.g. in UK has 3 pin plug and set for 240v.
Question:	Why does amazon say this won’t work with a 2007 Porsche Cayman
Answer:	Our MXS 5.0 (40-206) is a 12V, 4.3 amp charger recommended for lead-acid and AGM batteries up to 160Ah. If your battery meets this criteria it will work fine on your vehicle.
Question:	Will this work for a 2017 Porsche Macan S
Answer:	Will this work with a 2018 Porsche macan
Question:	What’s the difference between this mxs 5.0 charger and a mus
Answer:	Don't agree with D. Raupp: the number is not the amps it can put out but likely a number larger that 4.3 to show that it's a newer version in their line up. This charger is the next generation of the 4.3 with updated features/improvements, also with an added feature - the temperature sensing/adjustment. Called CTEK today and they said that 5.0 replaces the 4.3 which they are phasing out. This unit charges with several different amps: 0.8A; 4.3A; 2.5A; and 1.5A and switches automatically between them depending on which phase of the charge cycle it is in.

Product features

ADVANCED CHARGING WITH TEMPERATURE COMPENSATION

Automatic charging and maintenance for vehicle and motorcycle batteries, with reconditioning mode. The MXS 5.0 is an advanced microprocessor controlled battery charger which gives unrivaled performance for lead-acid batteries from 1.2-110Ah. It comes with automatic temperature compensation built in which ensures the best charging performance, even in the most extreme conditions. The MXS 5.0 also includes battery diagnosis to establish whether your battery can receive and retain a charge, patented automatic desulphation program, an AGM option that maximizes the performance life of most Stop/Start batteries and a special Recond mode for reconditioning deeply discharged batteries. The MXS 5.0 uses CTEK’s patented float/pulse system, which is the most efficient maintenance mode when a battery is connected for long periods.

Connect and Forget It

The CTEK MXS 5.0 offers a unique eight-step approach to battery care. Fully automatic microprocessor controlled charger with built-in automatic temperature sensor features a unique combination of advanced charging modes and makes the new MXS 5.0 the fastest, most effective, and versatile consumer charger CTEK has ever made. Alligator clamps and eyelets included.

Taking Safety and Ease-of-Use to the Next Level

The MXS 5.0 offers features such as a special reconditioning function that restores stratified and deeply discharged batteries, unique maintenance charging, and the charging of demanding AGM batteries (i.e. Optima). The charger is splash and dustproof, designed to protect vehicle electronics and non-sparking, reverse polarity protected, and short-circuit proof.

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).

• 🔥[ 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

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

• 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

Cllena Powerlet Plug to Quick Charge 3.0 Dual USB Charger Adapter with LED Voltmeter



Smart IC Technology

With intelligent power IC, outputs stable current without fluctuation.



Broad Compatibility

Suitable for all Smartphones, tablets and other accessories can charge much faster, and you can save time. The quick charge ports work with most cell phones, tablets, digital cameras, PDAs, PSP, MP3, MP4 and other USB devices.



Specification:

Color: Black

Material: Aluminum Alloy + ABS

Input Voltage: 12V - 24V

QC 3.0 USB Output: 5V - 6.5V: 3A; 6.5V - 9V: 2A; 9V - 12V: 1.5A

Voltage Display Range: DC 6V - 30V

Dimension: 35mm x 71mm(Dia. x H)

Multi-purposes: supply power for cellphone, tablet, GPS and other USB-devices



Package Include:

1 * Powerlet USB with Voltmeter Adapter



NOTE:

1. The voltage indicator ONLY works when the device is connected to the battery.

2. Since the iPhone series does not support fast charging, charging the iPhone is normal speed.

3. Can't support Super Fast Change(5V 4A), such as HUAWEI P20, OnePlug 5T/6, ETC.

• 【Dual QC3.0 USB Ports】- Dual Quick Charge 3.0 18W / 3A USB charging ports, built-in smart charging IC, will auto detects your devices and charges them at optimal speed, better charging performance; Backward-compatible with QC 2.0, 1.0, provides standard charging for non-Quick Charge devices.
• 【Digital Voltmeter Display】- Built in intelligent voltage monitor, with LED digital display, it real time shows you the accurate voltage status of motorcycle, more secure for driving.
• 【Safety Protection】- It's certified by CE & ROHS with Overload, Over-current and Short Circuit Protection to ensure charging safety.
• 【Super Durable】- Aluminum alloy and high-grade ABS material, high temperature resistant and corrosion resistant, super durable and not easily deformed.
• 【Dustproof and Waterproof】- There's a rubber USB cover for water resistance and dust resistance, effectively enhance its lifespan.

User questions & answers

Question:	Will this work on a 2007 f650gs? It does not have a power outlet
Answer:	No. It plugs into a power outlet.
Question:	if left in socket wil it discharge battery
Answer:	First off, the power draw on this thing would be so tiny you wouldn't notice it compared to other things that are always drawing power, like alarm systems. Second, most outlets where you'd plug it in are not powered when the key is off, so it couldn't draw power anyway.
Question:	will this work on a 2019 r9t
Answer:	I expect that it will. I have a 2005 RT and it works perfectly. I'm pretty sure the power sockets have not changed.
Question:	What has your experience been using this on a newer Ducati Multistrada? I have a 2019 1260s
Answer:	It should work on any bike that is 12 volts and has a socket like BMWs have stock. I use mine on my BMW and it works fine.

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.