The biggest issue I have with the idea of wood gasification is that most if my stuff is short trips around my farm or it is working in my hay field. I keep thinking at some point wood gasification will make sence if for no other reason then to run a generator for my backup power. But this is kind of a testing of the Waters for me. I have tried a few different options on batteries and the best deal I have seen is at battery clearing house.
https://www.batteryclearinghouse.com/products/lot-of-300-panasonic-ncr18650a-cells-in-ring-packs
I have tested just about 150 of those cells so far and all test like new. I am still waiting for the 2 week self discharging test as I just started working with them but after trying other salvage deals they definitely look worth the money to me.
I ordered enough to get me about 20kwh of capacity which will give me about 5 hours runtime and keep my discharge down to 0.2C which is almost nothing for lithium ion.
I have 50 cal amo cases to build the battery packs in which should contain any battery fire if it happens. It is a crazy big project for a small tractor but should work out to be a nice machine when done.
I think if budget allowed I would buy these cells instead.
Lifepo4 are definitely better from safety and cycle life but I was looking really cheap salvage lithium ion when I started which turned out to be expensive because of shrinkage so i decided the cells from battery clearing house where my best bet to finish my project as i have about half the cells i needed when i found that supplier and decided to try those.
I was buying the mixed medical cells from battery hookup but honestly it seems about the same cost or move than the ring cells when you sort out all the shrinkage and different cell capacities.
Anyway that is the adventure I have wander into. I like the idea of using it as portable power as well. Being designed for 20kwh storage I could easily run a decent inverter on it anywhere here on the farm. That alone seems very handy.