Are you worried about changing your car battery in case your lose your radio code or worse, disturb your car's immobiliser/alarm system? Then this is the product for you.

Simply plug the unit into your car's cigar lighter, turn on your ignition and then change your battery. The unit supplies power to your vehicle's electrical system whilst the vehicle's battery is disconnected.

What's more - the unit even recharges through your vehicle's cigar lighter socket.