40A DC-DC Battery Charger with MPPT
Reliable 40A DC-DC Charger with Integrated MPPT
Overview
A compact DC-DC battery charger that delivers up to 40 amps and includes an MPPT solar charge controller. Designed for vehicle and off-grid systems, it charges a secondary battery from either the alternator or solar panels while managing battery health with multi-stage charging.
Benefits
- Keep your house battery topped up reliably while driving or from solar, so you have power when you need it.
- Get more usable energy from solar panels thanks to MPPT tracking, reducing the need to run the engine or generator.
- Extend battery life with controlled multi-stage charging and chemistry-specific charge profiles.
- Reduce worry about overcharging, overheating, or short circuits with built-in protection features.
- Simplify system setup: one unit handles alternator charging and solar input, saving space and wiring complexity.
Features
- 40 A maximum charge current to the house or auxiliary battery.
- Built-in MPPT solar charge controller to optimize power from solar panels.
- Multi-stage charging (bulk, absorb, float) with selectable battery profiles (lead-acid, AGM, gel, LiFePO4).
- Automatic 12V / 24V system detection and voltage regulation.
- Input from alternator and dedicated solar input; prioritizes solar when available.
- LED status indicators for charge state and fault conditions.
- Comprehensive protections: reverse polarity, over-current, over-temperature, and short-circuit protection.
Specifications
- Maximum charge current: 40 A
- Input voltage (DC): 9 – 32 V (suitable for 12 V and 24 V systems with auto-detect)
- Solar MPPT input voltage: up to 100 V (maximum PV open-circuit voltage)
- MPPT efficiency: up to 98% (typical)
- Supported battery chemistries: Flooded lead-acid, AGM, Gel, LiFePO4
- Charging stages: bulk, absorption, float
- Protections: reverse polarity, over-current, over-voltage, over-temperature, short-circuit
- Operating temperature: -20 °C to +60 °C
- Material / housing: aluminum casing for heat dissipation
- Approximate dimensions: 170 x 130 x 55 mm
- Approximate weight: 1.2 kg
