OPTIMA Batteries 8052-161 - D31M Group 31 BLUETOP Dual Purpose (Deep-Cycle & Starting) Proheat Engine Heaters 000 BTU/hr) to heat your

000 BTU/hr) to heat your engine for comfort and reliable cold starts

•PWM series battery charging (not shunt)

Great for powering so much

Durability has been systematically engrained into this advanced generation design to deliver dependable power in the toughest conditions

- Selector switch for sealed or flooded batteries

OPTIMA Batteries 8052-161 - D31M Group 31 BLUETOP Dual Purpose (Deep-Cycle & Starting) Proheat Engine Heaters 000 BTU/hr) to heat yourBENEFITS OF THE BLUETOP: Both dual purpose and starting applications available Up to three times more recharges More than 15 times the vibration resistance Completely spillproof, mountable in virtually any position Maintenance free Optimal starting power (Dual purpose and starting applications available OPTIMA BLUETOP D31M group 31 batteries are our most powerful and have the largest energy storage capacity. Usually they can be mounted anywhere a