12V 40A DC to DC Battery Charger with MPPT

LiTime 12V 40A DC to DC Battery Charger with MPPT

Charge your 12V service battery efficiently from your vehicle alternator, solar panels, or both with this dual-input DC-DC charger. Built-in MPPT maximizes solar harvest while multi-stage charging and full protection keep your batteries safe and fully charged.

Key Features

• Dual input: vehicle alternator (DC) + solar (MPPT)
• 40A charging current with up to 93% efficiency
• Max. 600W solar input (up to 30V) and 600W alternator input
• Compatible with 12V Lithium (LiFePO4), Gel, AGM, and Calcium batteries
• Multi-stage smart charging (including 2-step CC/CV for LiFePO4)
• Can activate low-voltage / “dead” lithium batteries
• Reverse charging function (service battery can top up starting battery when needed)
• Comprehensive protections: over-voltage, reverse polarity, over-temperature, charging timeout, and BMS protection
• Simple LED indicators and button controls for easy setup
• Low standby consumption (<10mA)

Specifications

• System Voltage: 12V
• Charging Current: 40A
• Charging Efficiency: Up to 93%
• Max. Solar Input: 600W / 30V (Min. 10V)
• Max. Alternator Input: 600W
• Charging Voltage Range: 7V – 15.4V
• Battery Types: Lithium (LiFePO4), SLA, AGM, GEL, Calcium
• Standby Self-Consumption: <10mA
• Dimensions: 5.83 × 1.89 × 7.44 in
• Weight: Approx. 2.43 lbs
• Operating Temperature: -14°F to 113°F (-10°C to 45°C)

Ideal For RVs, vans, campers, boats, and off-grid setups where you want to charge a 12V house/service battery from the vehicle alternator while driving and from solar panels when parked.

What’s Included

• LiTime 12V 40A DC-DC Battery Charger with MPPT
• Mounting screws
• User manual