so I got a ups with a 12v lead acid battery that was constantly on so the water inside the cells has disappeared, initially the reading voltage was 0.3v, and when I added distilled water it generally started to go up by its own to around 3v ish.
now I am charging it, and its voltage is rising but slowly, and drops Mv moderately quickly. but what is supper odd is that it's not drawing any amps, from my bench power supply.
also to mention it's not able to go past 8v for now at least.
now, what is my question, why when I am charging the lead-acid battery it doesn't draw any amps? and is it really charging without drawing any amps?
my guess would be it needs to reach a certain voltage until it really starts to charge and hold capacity.