Silver Bullet member
i bought a few solar panels, harbor freight, 3 seperate 15 watt panels with a cheap looking control box. 1 panel has broken glass but still reads on a meter it's producing almost 24 volts, same as the others. i have all 3 panels hooked together, total of 45 watts, going into the "box" that shows the system is charging and everything is good, this is all hooked up to 3 large deepcycle batteries. i have a remote cabin in north arkansas, not trying to run the cabin, just store enough juice to watch TV and run a fan and a couple of those low wattage light bulbs. the panels do not seem to keep the batteries charged enough, can run maybe 2-3 hours. have cut a couple of trees trying to maximize solar exposure, doesn't seem to help. am i asking too much of the 45 watts to try and charge 3 batteries in a days time? i'm using a 4000 watt invertor, it shuts the system down at about 11.5 volts remaining. anything i can do to help?