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25A DC to DC Battery Charger Purposefully designed to accurately and safely charge auxiliary batteries, the Wagan Tech Dual-Input DC to DC Charger series ensures your batteries are kept at optimum levels that will enhance performance and extend their lifespan. Our chargers can be used with standard and smart alternator vehicles and is perfect for use with solar system setups.  Intelligent 3-Stage Charging Our Intelligent 3-stage charging uses a high-speed microcontroller and a proprietary charging algorithm to deliver a sophisticated 3 stage charging process. The first stage, bulk charge (constant current), charges the battery fast while the second stage, absorption (constant voltage), ensures the battery is thoroughly charged. The third stage, float, monitors and keeps the battery at a safe voltage allowing it to be maintained and ready for use.   Works with Most Battery Types Our DC to DC Charger works with: SLA (Sealed Lead Acid) Flooded Lead-acid Gel AGM (Absorbed Glass Mat) Calcium LiFePO4 Lithium Iron Phosphate batteries* *LiFePo4 batteries must have a Battery Management System (BMS) in place.   Solar Panel Charging (MPPT) Our DC to DC Charger utilizes sophisticated MPPT (Maximum Power Point Tracking) solar regulator technology. MPPT maximizes the power generated from your solar panels to the auxiliary battery. The static efficiency of the MPPT algorithm is >97%, and the dynamic efficiency is >95%. This DC to DC Battery Charger can be used with solar panels up to 375W combined in 12V systems and 750W combined in 24V systems.   Straight-Forward Installation Color-coded & labeled wires makes it easy to identify routing location Instruction Manual is detailed and indicates all necessary installation procedures Compact size makes finding an installation site easy Heat, vibration, water, and dust protected for limitless installs Butt-splice connectors are included Mounting plate is integrated into unit's design making installation a breeze   Integrat