Renogy 40A DC-DC Battery Charger with MPPT Solar and Alternator Dual Power Input, for Flooded, Gel, AGM, and Lithium Battery

【Two Charging Options】The Renogy 40A DC-DC MPPT battery charger offers two versatile charging modes to maximize efficiency. The charger defaults to DC input priority mode. It will automatically switch to the alternate charging mode when the input voltage in the primary mode falls below the default voltage. This ensures maximum efficiency in charging your battery whether you're on the road or parked. 【Versatile Compatibility】Compatible with various battery types: LiFePO4, Gel, Flooded, and Sealed Lead Acid. It features a 4-stage charging logic that adapts to different battery characteristics for safe and efficient charging. 【Comprehensive Protection】The Renogy 40A DC-DC MPPT charger incorporates comprehensive system protection, offering full safeguarding for solar, generator, and battery connections. It effectively handles reverse polarity, over-voltage, under-voltage, and over-temperature conditions, ensuring reliable and safe operation in all scenarios. 【Easy Operation and Visual Alerts】The Renogy 40A DC-DC features indicator lights and buttons for effortless operation. One-touch selection allows you to choose the correct battery type, while LED lights provide visual alerts for errors, ensuring a hassle-free and efficient charging experience. 【Certified Quality for Long-Term Reliability】This battery charger is certified to multiple safety standards, including FCC, RoHS, CE, and SAA, ensuring it meets international benchmarks. It also comes with a 2-year comprehensive warranty, providing robust assurance for your use.