The World's Smartest Battery Charger
Charges and maintains and 12V car, motorcycle or lawn tractor battery.
If you have a vehicle you don't use every day, just connect our CTEK 3300 battery charger and forget it. If the battery is low, the compact unit will recharge it at an optimal rate, varying both current and voltage automatically as it charges. When the battery is fully charged, the charger will change over to a maintenance mode to keep your battery in top condition (for longer battery life). Clip onto battery terminals or attach connectors permanently to battery and unplug when not in use.
Dim: 7" x 2 1/4" x 1 1/2"; for all 12V batteries (including Optima).