Originally Posted by maxwestern
These were the ones I was talking about,I see a couple are about $50 each,
sometimes they are only $20.

https://www.gumtree.com.au/s-850w+generator/k0

I've got a Honda E300 that just did the crank bearing but it only puts out 8 amps or so. It would take a week running 24 hours a day to charge the batteries unfortunately.