The Power-Start PS1224 jump start pack is ideal for starting all 12v petrol vehicles, 12v diesel vehicles, 12v light vans/trucks and all 24v vehicles on light usage. 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: 1200/700 Cranking Amps and 3500/1600 Peak Amps.