I just wanted to chime in here about that controller.
The heart of Woof's design is that GHurd controller, which is the simplest, most straight-forward piece of circuitry I've ever put together. And it is the only part of my system that "just works" no matter what.
There are really pricey controllers out there - and there are junk ones like my deceased Harbor Freight charge controller. This one is cheap and easy.
Make a simple one to save your batteries.
Make 2 of them like woof and a complicated (and cool) 2-stage system.
But just make one. Your batteries will thank you, and you won't have to babysit your system anymore. Like Ron Poppeil says, "Set it! And Forget it!"
