Amps jumping around on AGM finishing charge
At a battery temp of 81 degrees and a float charge of 13.33v, the charge was settling in toward .1 A when it started jumping around more and more. Still settling, but jumping from .02a to .15a. The ...
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Yes once the volts are up high enough. It does not take much current at all. Probably really not a problem at all - the literature seems to indicate AGMs typically outgass at 1/5 to 1/10 the rate of flooded batteries their whole life and this is normal, but this is often what eventually kills them if sulphation does not get them first.
I'm trying to walk that magic balance in between, float is one way to get there. I think solar is too, but it has a lot more variables than float, so I want to really understand float first. The temp variation here is giving me fits. I may drag the things into the air conditioned space just to eliminate that variable. But I do feel like this hundredth digit behaviour gives me a leading indicator to avoid outgassing from the valves. I suspect outgassing below the venting level is as good for AGMs as it is for flooded batteries...in moderation. But it's a tightrope to walk.
Jim
I'm trying to walk that magic balance in between, float is one way to get there. I think solar is too, but it has a lot more variables than float, so I want to really understand float first. The temp variation here is giving me fits. I may drag the things into the air conditioned space just to eliminate that variable. But I do feel like this hundredth digit behaviour gives me a leading indicator to avoid outgassing from the valves. I suspect outgassing below the venting level is as good for AGMs as it is for flooded batteries...in moderation. But it's a tightrope to walk.
Jim
