PT, do AGMs care about the gassing voltage? I have no idea. Was something about pressure for squeezing stuff into the mats instead? I have a good memory, but it is short!
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I am still confused, so please clarify if the idea is to charge the 100AH battery at constant 5 amps until battery voltage reaches 16.2, then stop?
So Vabs would be set to 16.2 and you get constant 5 amps up to some high SOC, but not to 100% full yet--since there has been no absorption stage with tapering amps.
I have one charger that goes to 15.8 with a 4.1 amp setting, but none that does 5amps. I can put two 100s in parallel and set the charger to 10 amps. But the plan was to do one battery at a time.
EDIT--but the two 100s were at 90% of original Capacity on their last test for that in April. So can I say they are now 90AH so 5% is 4.5 so that 4.1 is "close enough"?
At 15.8 I would have to swap to my 45 amper to get the rest of the way to 16.2. No idea what amps that would be, but might be 10 or less at that stage.
Would that do any good? What if I start with them already full like they are now and just jack up the voltage to 16.2? Like you do when seeing if you "hit the wall" ?
Or do I have to discharge them some way down so the 5 amp thing will run for a while before they get to 16.2?
