DC to DC Battery Charger 40A 520W, 12V 24V LiFePO4

DC to DC battery charger delivers up to 40A fast charging to refill your house battery or portable power station while you drive, cutting downtime versus low-power vehicle sockets. Designed for 12V/24V systems, it supports multiple charge modes and common battery chemistries, with DIP switches for quick setup. An LED indicator and XT60 quick-connect cable simplify installation for RVs, campers, trailers, cars, and backup power builds.

• Delivers up to 40A / 520W DC-DC charging for quicker recovery of auxiliary batteries and power stations.


• Supports 12V↔12V, 12V→24V, 24V→12V, 24V↔24V modes for mixed vehicle and battery setups.


• Includes DIP switch keys to select LiFePO4, lead-acid, AGM, GEL, and calcium battery profiles.


• Enables reverse charging to help start a low starter battery from the auxiliary battery when needed.


• Protects with fan cooling plus over/under-voltage, reverse polarity, over-temp, and short-circuit safeguards.

Build a dependable charging system for road trips, off-grid camping, or home backup power. This alternator charger is made for quick-scan usability: connect via XT60, choose your battery type with the included switches, and monitor status at a glance with the LED indicator. Whether you’re upgrading an RV electrical setup or keeping an emergency power station topped up, it’s a practical way to keep energy ready when plans change. Grab yours today.

• Max output power: 520W


• Charging current: up to 40A


• Input voltage: 12V / 24V


• Charging voltage range: 12.6V–29.4V


• Charge modes: 12→12, 12→24, 24→12, 24→24


• Battery compatibility: LiFePO4, lead-acid, AGM, GEL, calcium; works with most portable power stations


• Included: XT60 quick-connect cable, 2 DIP switch keys, LED indicator