To handle "zero voltage" situations, these devices include a "Boost" or "Override" button. Pressing this manually activates the unit, forcing it to deliver a massive current surge (often 2000A to 6000A) directly to the engine's starter motor.
Instead of trying to "charge" the dead battery, the device effectively bypasses it to provide the necessary power
Similar models often include a built-in air compressor for tire inflation and a power bank for charging devices via USB.
Designed for 12V systems, typically supporting gasoline engines up to 10.0L and diesel engines up to 8.0L.
The screen shows real-time information such as remaining battery percentage or tire pressure.