The Power-Start PS800 jump start pack is suitable for starting small 12v petrol vehicles, small 12v diesel vehicles, and light 12v vans and trucks. With safety in mind, each starter pack incorporates many safety features: Reverse polarity warning reduces the risk of wrongful connection, spike protection circuits reduce the risk of damage to the vehicle on-board electronic systems and the on/off isolator switch enables a safe connection due to non-live cable clamps and also avoids unintentional short circuit. Specification: 800 Cranking Amps and 2400 Peak Amps.