Power Queen LiFePO4 BatteryPower Queen LiFePO4 BatteryPower Queen LiFePO4 Battery

Power Queen 12V 40A DC to DC Battery Charger


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  • Exquisite Design & Simple Operation】Small, light, and exquisite, the Power Queen 12V DC-DC battery charger has a compact design, and the dimensions are 5.83*1.89*7.44 inches, so it can save more space for your vehicle. The additional components, Anderson connectors, bring simple connection and operation in the installation process, less trouble for you during setup. The visual LED indicators let you easily know the charging status.

  • High-level Safety Secured & Reverse Charge Function】Power Queen 12V DC-DC battery charger can protect the battery from over-charging, over-voltage, and over-temp, and it has BMS protection for LiFePO4 batteries. Besides, this charger can activate the LiFePO4 battery when the BMS inside the battery shuts off. Where necessary, the service battery can charge the starter battery, protecting the starter battery and alternator from damage.

  • Dual Input ChargingPower Queen 12V DC-DC battery charger supports charging the service battery through the generator and solar panels, achieving 100% fully charged on the service battery. The advanced built-in MPPT function of the charger maximizes solar power and brings a high charging efficiency at a proper voltage and charging phase.

  • Great Compatibility & More OptionsPower Queen 12V DC-DC battery charger is compatible with various battery types, such as Lithium batteries, AGM, Gel, SLA, and CA, and offers you more options and a more flexible lifestyle. The charger can meet your multiple needs for charging the service battery in various application scenarios, such as RV, trailer, camper, truck, yacht, marine, etc.

  • 24-hour Timely ServicePower Queen struggles to provide every customer with the safest product and the most professional service. If you have any questions, we'll offer one-on-one technical support to analyze consumers' problems within 24 hours.
ATTENTION: ONLY 23 left in stock.
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12V 40A DC to DC charger

Compatible composition

AGM, Gel, SLA, CA, and Lithium Batteries

Charging Voltage


Charging Current


Max.Alternator Input Power


Max.Solar Input Power/Voltage



5.83*1.89*7.44 inch


2.43 lbs

Operating temperature

-10°C- 45°C/-14°F - 113°F

Storage Temperature Range

-20-65℃ /-4°F - 149°F

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Power Queen 12V 40A DC to DC Battery Charger