12V 40A DC to DC Battery Charger with 500W Power and Smart Multi-Stage Charging

Keep your auxiliary batteries charged with this 12V 40A DC to DC battery charger, designed for RVs, trucks, boats, yachts, and commercial vehicles. With a maximum output power of 500W, smart multi-stage charging, and compatibility with lead-acid and lithium batteries, this onboard charger provides convenient battery management for mobile power systems. Its compact aluminum alloy housing and built-in electrical protections support reliable everyday operation.

Key Features

• 40A Charging Performance: Delivers 40A charging current with up to 500W maximum output power, helping recharge auxiliary batteries in vehicles and marine applications.

• Wide Battery Compatibility: Supports lithium, LiFePO4, and lead-acid batteries, including AGM, GEL, and flooded types. Compatible with various alternator configurations.

• Smart Multi-Stage Charging: Features 2-stage charging for LiFePO4 batteries and 4-stage charging for lead-acid batteries, helping manage the charging process and support battery longevity.

• Built-In Safety Protections: Includes overvoltage, undervoltage, high-temperature, and reverse polarity protection. Isolated input and output help reduce electrical interference between vehicle systems.

• Lithium Battery Activation: Provides a battery activation function for compatible lithium batteries that have become idle or deeply discharged. The aluminum alloy housing includes pre-drilled mounting holes for convenient installation.

Specifications

• Product Type: DC to DC onboard battery charger

• Input Voltage: 12V DC

• Input Battery Voltage Range: 8V–16V DC

• Charging Current: 40A

• Maximum Output Power: 500W

• Lead-Acid Charging Voltage: 13.2V–14.7V

• Lithium Charging Voltage: 12.6V–14.6V

• Battery Compatibility: Lead-acid, lithium, LiFePO4, AGM, GEL, and flooded batteries

• Charging Modes: 2-stage lithium and 4-stage lead-acid charging

• Housing Material: Aluminum alloy

• Protection Features: Overvoltage, undervoltage, high-temperature, and reverse polarity protection

• Electrical Design: Isolated input and output

• Installation: Pre-drilled mounting holes

• Suitable Applications: RVs, trucks, commercial vehicles, boats, and yachts

Maintain your auxiliary battery power with this compact 40A DC to DC charger, combining versatile battery compatibility, intelligent charging, and built-in protection.