The EcoFlow 800W Alternator Charger draws surplus energy from a vehicle's alternator to top up a portable power station while you drive. Rated at 800 W of continuous output, it charges a compatible power station up to eight times faster than a 12 V cigarette lighter socket, delivering around 1 kWh every 1.3 hours. Its built-in DC-DC converter, gallium nitride (GaN) power stage and integrated 125 A fuse keep the housing compact at 2.3 kg while covering most van, camper and overland use cases.

• 800 W maximum output, roughly 1 kWh every 1.3 hours of driving — a full top-up takes a single road leg instead of a whole day.
• Three operating modes: charging (alternator to power station), reverse charging (power station back to the starter or house battery) and maintenance (low-current trickle for parked vehicles).
• Gallium nitride power stage handles high thermal loads without derating and helps the enclosure stay light at 2.3 kg.
• Under-voltage protection cuts the draw automatically so the starter battery is never pulled below a safe cranking level.
• 125 A rated inline fuse and dedicated ignition-sense wiring make the installation compliant with typical 12 V and 24 V camper DC systems.
• Works as a jump starter for a flat vehicle battery, and can top up a camper house-battery bank of up to 7.2 kWh from a compatible power station.

Key specs

• Input: 40 V–60 V, 3 A max
• Output: 13.8 V / 27.6 V, 100 W max (800 W total system)
• Fuse rated current: 125 A
• Frequency: 2402–2480 MHz
• Operating temperature: −20 °C to 60 °C, ≤95 % humidity
• Weight: 2.3 kg
• Dimensions: 24.2 × 19.4 × 3.5 cm
• Compatibility: DELTA Pro (adapter), DELTA Pro 3, DELTA 3 / 3 1500 / 3 Plus, DELTA 2 Max

Well suited to campers, converted vans and 4×4 overland builds where shore-power hookups are rare and the alternator is the main way to keep a power station topped up between stops.