Use the Zerostart 3400038 to maintain available cold cranking amps in cold weather by warming the batteries. Improved recharge time.
Silicone pad heater placed underneath the batteries. Silicone material is resistant to battery acid. Slim design to fit in the battery box/tray.
180 Watts 120 Volts, 20-1/2″ x 13.0″, Standard 120 Volt 15 Amp 3-Prong Plug, For model with 2-Prong Non-Grounded plug see 3400068