aging AGM unusual behavior
papab Registered Users Posts: 66 ✭✭
I have a 150 amp-hr lifeline AGM that is sulphated and less than 80% capacity. It takes a long time to charge up. I've decided to keep using it until it fails.
I've noticed a couple of times that after the current has dropped fairly low (~0.6 amps), sometimes the current will rise during absorption,. What I have been doing when that happens is switching to float and sometimes equalizing. This time I've decided to just leave it at the absorption voltage 14.2V for a while. It's been there for about 18 hrs now, the battery is warm, but not hot (about 25C), and isn't making any noises. What's going on inside? Am I doing it good or destroying it?
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