In order to still work properly e.g. after a long winter pause, the battery has to be preserved. This is done by the battery conditioner. By automatically charging and discharging, the battery conditioner simulates day-to-day operation. The compact device is suitable for all 12 V lead-acid batteries with a capacity of 10 to 150 Ah. Additionally, the battery conditioner can serve as a backup power supply and temporarily replace a battery. If a vehicle's battery has to be removed or replaced, the conditioner takes over the power supply. This way, stored data, e.g. of the car radio, is retained. Dimensions: W 7 x D 10 x H 6 cm. Weight: 340 g.