For added peace of mind and quick recovery when in need of it; invest in this cheap and effective car battery charger by Challenge. With some great essentials including overload, short circuit and reverse polarity protection. This car battery charger is perfect for charging 6/12V lead acid batteries which obtain 15-80Ah. However, it is not suitable for Gel/Leisure batteries. This is compatible and suitable for petrol engines of 1800cc and for diesel engines 1400cc. The charge time for this takes up to 16 hours, so you can charge it and use it when in need!