I have a 12v solar charger that's sold by Harbor Freight. It's designed to plug into a cigarette lighter and sit on the dash of your car to keep the battery charged.. It throws out 1.5 amps, so it operates like a trickle charger.. All of my bikes have Powerlet outlets, so I've added a bunch of wire to the solar charger, eliminated the cigarette plug and installed a male Powerlet.. This way I can keep my bike batteries topped up without running a 120v charger.. Here's my question.. Will this drain my battery when it's dark out?:huh I know it's charging during daylight, but is there anything that would drain the battery when there's no light.. Here's the unit.. http://www.harborfreight.com/15-watt-solar-battery-charger-44768.html#pr-header-44768 I've mounted it on my south facing garage wall and ran the wires inside..