Hi all I have started to collect 18650's out of old laptops etc. I intend to build 48volt pack etc. The think that has got me a stumped is i have 4Kw solar system but the INvertor doesn't support battery charging. I know the simple solution would be buy a box that supports charging of battery's etc. But i have been told its possible to connected to a existing solar system with a piece of hardware to charge the battery's and i suppose kick in when theirs no solar ?
paul
paul