Battery conditioner, 12 V. The Dometic PerfectBattery BC 100 keeps 12 V lead-acid batteries in top condition during prolonged periods of non-use by simulating a gentle driving motion. It is ideal for classic cars and other seasonally used vehicles and also functions as a battery charger. Additionally, it can take over the power supply for the car radio when the starter battery is replaced. Suitable for battery capacities between 10 and 30 Ah.