OptiMATE 2 extends life and improves performance of a 12V battery, mounted in a vehicle / craft or battery operated system that is not in daily use, even in temperatures below freezing. OptiMATE 2 senses the battery condition, recharges and then keeps the battery 100% ready and provides power to the anti-theft alarm, display, on board computer, etc. The OptiMATE maintenance program delivers only what the battery needs, never overcharges, never undercharges TM428