Hello! Don here. I'm making my first wind generator. Need to keep a 12v gel cell battery charged in my tower deer blind that powers a cigarette lighter inverter that powers a wireless Ip camera that watches and records the deer in my food plot from the comforts of my living room 500 feet away. I have the blades made, the hub in the making, the charge controller and dump resistor on order and have a pmdc motor I think will work. It's 90 volts, 5 amps @ 1700 tons. What do you think do I need a different motor? 45 v at 850 and 23.5v @ 425 rpms which would be 11.5v at 212 ish rpms. Am I figuring right? Thanks in advance!