I need some feedback on my plans. My chicken coop(small coop 3'x5' for 3 hens) doesn't have electricity and I don't want to run and cord all the way out to it so I was think about this. I have a rechargeable marine battery i use for my trolling motor in the boat. I don't do much fishing in the winter so I was thinking I could use the battery hooked to a 400 watt power inverter with a digital timer plugged into it and a lamp kit with a 15-25 watt bulb set to come on early in the morning for 6 hours in the morning to provide extra winter lighting. I've never used a inverter or anything like this so any advice is welcome. What size bulb? larger inverter? different light kit idea? anything you think could make it better.