The ATEM POWER AGM battery, which has built-in pure lead grip and AGM separator for enhanced conductivity and electrolyte absorption and effective charge keeping, is all weather- and temperature-resistant, and this battery is also designed for a more efficient discharge recovery. Faster recharging technology and battery protection deliver reliable performance. The sealed structure, copper alloy terminals and factory sealed lid allow no leakage of any caustic chemicals, and ABS intrusion-safe body and heavy-duty posts ensure reliable performance against any drastic vibrations shocks or outer wreckage. This 12V 40A DC-DC charger by ATEM 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.
Features

• Battery-Anti-Leakage Construction: Sealed structure, ABS intrusion-safe body and factory sealed lid ensure no leakage of any caustic materials.
• Battery-Weather & Temperature Resistant: All-weatherproof and able to work at temperatures down to -40 degrees Fahrenheit.
• Battery-Longer Lifespan: This Deep Cycle Battery is low self-discharge, less prone to sulfation and excellent water retention which can be kept out of operation for a much longer period while preserving the perfect conductivity.
• Battery-User Friendly Design: Built-in straps offer excellent carrying and mounting experience and ensure convenience during daily use.
• Charger-Dual Input Power: Our charger utilizes the DC source before tapping into solar power, ensuring a stable and consistent energy source for your auxiliary battery.
• 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-Boost Efficiency with MPPT: This DC to DC charger includes a MPPT controller, increasing charging efficiency by up to 30% when connected to solar panels.
• 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.