The CTEK CT5 Start Stop 12v battery charger and maintainer has been specially designed to charge and maintain batteries in Start/Stop vehicles. Start-Stop technology is great for the environment but it can put a considerable strain on your battery, especially if it’s in an older car. By keeping the battery fully charged, you can take full advantage of all the Start/Stop technology benefits, such as better fuel efficiency and lower CO2 emissions. If you only make short journeys, use this 12v battery charger once a month to keep your battery in peak condition. And if you're going away on holiday, just connect the charger to the battery to make sure your car’s ready to go when you return.