Don’t know what’s going on with the correct paint department. Bren bought a new track a year and a half ago and my bike rack started rubbing it down to the aluminum almost instantly. Same rack used with my older trip and other bikes never had any issues.
I have a similar device made by Bluetti which I have used to charge my bike. Charging the bike only draws about 400 watts maximum and it’s no problem to charge with a portable power station such as mine or the Jackery. I could probably perform 2-3 full charges with mine, if I didn’t also use it...
I think I would have just cleaned the second chain instead of replacing it. How about this strategy? Start with a new chain and run it until 0.5 stretch, then replace with a new chain and run until 0.75 stretch, and then replace with first chain and run it until 0.75, and then replace everything?
It's hard to say exactly as their is power loss in converting from battery power to AC, but I think you could safely charge 2 batteries at once. Quick done-in-my-head math says you may or may not get 2 full charges, but not much more. This is assuming you have a lithium battery. If it's...