This 12V 40A DC-DC charger by ATEM POWER, It's your perfect off-road companion—an upgraded, automatic 3-stage charger. With up to 40A of power, it charges AGM, Gel, Calcium, Lead Acid, and LiFePO4 batteries efficiently. And say goodbye to compatibility concerns as this DC to DC charger adapts seamlessly to the smart alternator inside your vehicle. Tap into the abundant solar power with its MPPT controller, while effortlessly activating your sleeping LiFePO4 battery. Power limitations won't hold you back—conquer the outdoors with confidence! The expansive interior of our battery box easily accommodates most 12V batteries with dimension up to 35 x 18 x 20cm. With its prewired setup, just connect our ATEM POWER marine battery box to your battery terminals for instant use.
Features

• Charger-Advanced Charging Algorithm: Our smart 3-stage charging process optimally charges your batteries, delivering them to their peak levels for extended use.
• Charger-Intelligent Protection: It comes with built-in safeguards, protecting against reverse polarity, overvoltage, over-temperature, charge timeout, and lithium battery BMS.
• Charger-LiFePO4 Activation: Our 40A DC to DC charger sparks life into your sleeping LiFePO4 battery with its LiON mode for an electrifying performance.
• Charger-Battery Re-selection Made Easy: Switch batteries effortlessly! Our ATEM POWER DC to DC charger allows quick re-selection by long-pressing "SELECT."
• Charger-Please note: always refer to the wiring diagram in this listing for the latest wiring setup of the product as the user manual might be for previous version.
• Battery Box-Enhanced Compatibility: Our marine battery box readily fits the majority of 4WD batteries with dimensions of up to 35 x 18 x 20cm.
• Battery Box- Limitless Versatility: Our 12V battery box accommodates diverse needs, including 4x4s, compact boats, solar panels, electronic devices, camp lights, and refrigerators.
• Battery Box-Real-Time Monitoring: Stay informed about your battery's voltage status on the LCD display of our 12V battery box, ensuring optimal charging management.
• Battery Box-Dependable & Convenient: Our battery box includes deck loops, screws, nuts, and a sturdy strap for secure and reliable mounting, while the handles ensure easy carrying.
• Battery Box-Tough Construction: Crafted from robust PP housing, our battery box showcases remarkable resistance against shocks, impacts, dust, corrosion, and UV exposure.