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12V 40A Lithium Battery Charger 14.6V LiFePO4 Battery Charger for 12.8V LiFePO4 Lithium Deep Cycle Rechargeable Batteries 0V Wake Up 12 Volt Charger with 3 Connectors for RV, Boat, Car, Marine, Solar

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Availability: 20 left in stock
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Arrives Friday, Aug 7
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Model: 12V 40A


Features

  • Wide ApplicationKAISAL 14.6V lifepo4 battery charger is designed for 12V (12.8V) LiFePO4 batteries. Charging Specs: 14.6V; Charging Current: 40A; Rated Input Voltage: 100-120 Vac. 12V lithium battery charger is widely used in car batteries, RVs, motorcycles, marine, solar system, lighting equipment, trolling motors, electric yachts, energy storage, off grid, etc, providing you with reliable and quick charging solutions. Upgrade your charging experience today!
  • 3-Color Status IndicatorLithium battery charger 12 volt comes with a 3-color indicator light, allowing you to easily monitor the battery charging status. 1. Green Light On: Standby/0V Charging Wake Up Mode; 2. Red Light Flash: Normal Charging (0%~80%); 3. Yellow Light Flash: Small Current Charging (80%~99%); 4. Green Light On: Fully Charged (100%).
  • 3 Connection MethodsOur 12V lifepo4 battery charger provides 3 connection methods to meet your different needs. SB-50 Anderson plug can directly connect to the battery with Anderson port. It also can switch M8 terminals and alligator clips, which is very convenient to use. M8 terminal connectors can be remained on the lifepo4 battery without frequent removal by tightening it with the battery's bolt. And the alligator battery clips can be directly clamped on the lifepo4 battery with protruding pole lugs.
  • Fast & Smart LiFePO4 ChargerOur 12V lithium charger adopts 3-stage intelligent charging technology with an efficiency of up to 90%. It only takes 5 hours to fully charge a 12V/12.8V 200Ah lifepo4 battery, which is 2 times faster than 14.6v 20a lithium charger. When the battery is nearly full, the charger will reduce AMP output automatically.The CPU will monitor charging process to avoid overcharging and auto shut down when fully charged to protect your battery health and extend battery life.
  • 0V Charging Wake Up ModeOur 14.6V 40A lifepo4 battery charger can reset and repair the lifepo4 battery after BMS cut-off protection. When you forget to charge the battery regularly for a long time, our 14.6V lithium battery charger can activate your deeply sleeping 12V (12.8V) lifepo4 batteries to normal voltage.
  • 8 Protection Functions12V lifepo4 charger has a perfect protection system: Overvoltage/Overcurrent/Overheating/No-load/Short-circuit/Reverse Connection/Overcharge/Timing Charging protection. When a fault occurs, it will auto stop charging to prevent charger and battery from being damaged and protect your safety. And when the fault is repaired, it will auto resume work.If it works continuously for 15 hours, it will auto stop working to prevent the battery from being damaged due to overcharging.
  • Eddy Current Heat Dissipation & 9FT Long CableLithium battery charger 12V uses an aluminum alloy shell with good heat dissipation performance. Lifepo4 battery charger 12 volt is also equipped with an eddy current cooling fan, which greatly improves the cooling efficiency, enables it to work stably, and prolongs the service life of the charger. Lifepo4 battery charger 12V comes with a 9ft extra long cable, providing great flexibility without the need for additional extension cords.
  • FCC/ETL Certification & LightweightOur lithium battery charger 12 volt is FCC and ETL certified, providing you with safer charging, lower energy consumption, higher conversion efficiency, better load capacity, less electromagnetic radiation interference and noise. 12 volt lifepo4 battery charger is compact and weighs only 3 pounds, you can take it when you go traveling or camping.
  • 3-Year Product Service & 100% Full Loading Aging TestWe KAISAL aim at trying our best to offer you the best product and services to make you unworried before/after the purchase. Our 14.6v 40amp lithium battery chargers all pass 100% full load aging test. We promise 3-year product service. For quality problems caused by non-human damage, please feel free to contact us. We will provide free replacement 12V lifepo4 charger after confirmation.

Description

SPECIFICATION: Input Voltage: 100-120V AC; Input frequency: 50-60Hz; Rated input power: 600W; Efficiency: 90%; Operating temperature: -22℉~149℉; Operating humidity: 5%~95% NOTE: 0V wake up is to activate the battery BMS protection, not the 0V battery cells. BMS cut-off protection will be triggered to prevent the battery from over-discharging and battery output voltage will be 0V. It needs the charger with activation function to wake up the battery. Our charger has timeout protection settings. If it works continuously for 15 hours, it will stop working automatically to prevent the battery from being damaged due to overcharging. The cooling fan runs continuously while charging, effectively cool the charger, make it work stably and ensure a longer service life. Stands behind products! Be responsible for users! We specialize in designing and manufacturing automotive repair and modification tools. We have been in the auto repair industry for more than 10 years and have a professional R&D team dedicated to providing more professional, simpler and more efficient tools for users. KAISAL priority itself on always putting users first and your satisfaction is at the forefront of our mission. We are committed to continuously improving our products and service

Brand: KAISAL


Product Dimensions: 5"D x 8.5"W x 2.75"H


Item Weight: 5 pounds


Output Voltage: 12 volts_of_direct_current


Input Voltage: 110 volts


Output Voltage: 12 volts_of_direct_current


Input Voltage: 110 volts


Battery Charge Time: 5 hours


Current Rating: 40 A


Amperage: 40 A


Connector Type Used on Cable: M8 terminals, alligator clips, Anderson connector


Number of Ports: 3


Item Dimensions D x W x H: 5"D x 8.5"W x 2.75"H


Item Weight: 5 pounds


Brand: KAISAL


Mfr Part Number: 12V40A


Manufacturer: KAISAL


Model Number: 12V 40A


Warranty Description: 3 Years


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Aug 7

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews


  • Great charger, my van life experience is now much much better
Model: 12V 40A
When you have a source for an ample supply of electricity with no limitations on how long you can be plugged in pretty much any ol charger will do but if thats not the case like its not for me having a charger that can very quickly recharge your house battery is so nice to have its definitely worth making an investment so you can have that piece of mind. What used to take a full day, like hours and hours to fully charge my 100ah battery now only takes 2hrs. Finding a power source to connect too for 18hrs or more is very difficult when out in the wild but finding one to use for 2hrs is nothing. I no longer stress over how Im going to recharge my junk now that I bought this charger, and its never missed a beat. ... show more
Reviewed in the United States on March 9, 2026 by ssbbmoto

  • Great value.
Model: 12V 40A
Working well and great.
Reviewed in the United States on July 12, 2026 by Martin Durfee

  • Hard working great unit
Model: 12V 40A
I’ve used this unit to charge 12 100 AH LIPO4 batteries with internal BMS ..IT WORKS SO WELL I ONLY USE IT ONCE A MONTH..I use the battery at low charge around 10% charge then bring it up to 90% charge for all batteries..it works flawless..
Reviewed in the United States on July 16, 2026 by alan brodnax

  • Connect cellular and card battery
Model: 12V 40A
Perfect
Reviewed in the United States on June 27, 2026 by Elizabeth

  • Charges at current specified.
Model: 12V 40A
Charges at rate specified. Glad to have a charger that works twice as fast. Alligator clamps are useless and melted when I used them. This is too high current to use them for.
Reviewed in the United States on December 1, 2025 by LiFePo4 user

  • Does a great job charging with a generator
Model: 12V 40A
Charges a 140 amp hour battery on a Ryobi 2322 generator no problem.
Reviewed in the United States on July 19, 2026 by James

  • Excellent charger; positive clamp melted
Model: 12V 40A
This item worked very well. The 40 A charged the battery large 300 H lithium battery very quickly unlike my other chargers. The only problem that I had with this charger was that it melted the positive clamp. Don’t know why, as the battery shut off at the correct time. I am not sure what caused this and it shouldn’t have happened. ... show more
Reviewed in the United States on October 15, 2025 by voice doctor

  • Cargador de batería
Model: 12V 40A
Súper potente a la hora de cargar mi batería de litio, creo que sin dudas este es un buen producto
Reviewed in the United States on July 15, 2026 by Dani

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