Tronbike - Batteries Out

Its been a few years, and the AGMs are starting to go. I'm taking them out of the bike to reorder them in the chain, and maybe make some improvements to the mounting cage. I'd also like to add some good terminal covers.

On my external charger, each looked fine, carrying a full charge. I really need to test them when depleated/under load. About that Arduino voltmeter...