The Koolatron Battery Saver detects when your battery drops to 11-Volts and shuts off the current to all accessories plugged into it.
The battery saver prevents further battery drainage and reconnects automatically when you start your vehicle and begin re-charging your 12 volt battery.
The Koolatron 12 Volt Battery Saver will operate devices up to 5amps.
Leaving feedback is not something I would normally do (unless I'm not happy). I'm so impressed with the service I received and the new TV that I just had to say "thank you". Jeanine — , FL —