12v & 24v 40ah professional Power Pack, 40ah lead acid battery for professional use jump starting, extra long detachable cables, 12v DC auxiliary power outlet, integral worklamp, polarity protection. Now with heavy duty switching. Cold Cranking Amps: 400A Peak Amps: 800A Suitable for both 12v & 24v vehicles Jump start petrol cars up to 5.0L & diesels up to 4.0L 2 x 12v DC power socket