Hi all, I have a 12v 7Ah battery which I can't find the discharge profile for - if that's the name - from the manufacturer. Its an eBay battery, so I'd assume is pretty standard.
Anyway, I have a project which monitors its voltage and the instantaneous current draw.
Is there a way I can have a percentage charged figure from these two values (and potentially a discharge profile)? I've read that a 7Ah battery doesn't necessarily last for 7 hours at 1 amp load, and not 3.5 @ 2A; the more amps drawn means a lower capacity?