The burn time to get your battery will be depending regarding the Light head used in the test. My primary Light is an 18 watt light neck. This light head will consume more electric batteries than a light head with a 10w exactly how hot. While a 10w light head may install a burn period of six hours or more, my 18w light head gives us a burn time around four hours. A light head along with a higher output, will consume more battery life and make a shorter burn time. Test the switch . Get an elec...