I haven't risked it to see for sure, but I believe it will. Even when turned off, the light on the plug in is still on.
answered 5 months, 2 weeks ago
NO It uses no power when its off.
answered 5 months, 4 weeks ago
In theory, switching to "off" should not drain the battery. However, my daughter just unplugs it from the cigarette lighter when she arrives at her destination. That way, she leaves it turned to "High" and it is ready to go the next time she plugs it in.