Not OP, but I use solar and H8-size AGM batteries as primary with a backup diesel generator that I've converted to run on wood gas (and occasionally coal gas). Added a triple stage water filter to the gasifier last year to keep the tar and creosote down. The generator is an old clunker but it's easy to disassemble, which made it an ideal candidate for tinkering and the eventual retrofit.
Not very useful for much of the year at high latitudes though. If you're off-grid, you basically need wood to heat your home, and if you clear the snow off your panels you can get enough juice to keep your phones charged.
