Voltage and Amperage:
Most jump starters output 12V, suitable for cars.
Some models offer 24V for larger vehicles or trucks.
They provide high peak current (e.g., 1000A – 2000A or more) to crank the engine quickly.
Built-in Rechargeable Battery:
Usually lithium-ion or LiFePO4 battery inside.
Can be recharged via wall socket or car charger.
Holds charge for months, making it reliable for emergencies.