Positive Grid Corrosion
So getting ready to put some more float charge into the AGMs in prep for a 500w+ load test this weekend, I floated a little water over the valves. Battery was warm at 87 degrees. I have been waiting u...
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Just an idea, could it be sulfation?
In my stick house I have two AGM battery banks (200 AH at 48 volts nominal each). One of the eight batteries is weird. If I disconnect one set of four 12 volters in series, I can then put my 8 amp BatteryMINDer on them one battery at a time. System switched to use other bank to prevent any interference issues. All seven batteries show no problems doing this. One battery will show a yellow light indicating sulfation.
If I let the BatteryMINDer do its thing for a few days on that battery, it seems to get repaired. This is easily verified by the resting voltage of that bank when it is switched in, in place of the other bank.
For some reason I need to let my BatteryMINDer repair the sulfation (?) in that same battery about once a year.
I could of course just replace all four 12 volt 200 AH batteries, but that is about $1000. I'd rather use my BatteryMINDer once a year to "fix" it.
Maybe your issue?
In my stick house I have two AGM battery banks (200 AH at 48 volts nominal each). One of the eight batteries is weird. If I disconnect one set of four 12 volters in series, I can then put my 8 amp BatteryMINDer on them one battery at a time. System switched to use other bank to prevent any interference issues. All seven batteries show no problems doing this. One battery will show a yellow light indicating sulfation.
If I let the BatteryMINDer do its thing for a few days on that battery, it seems to get repaired. This is easily verified by the resting voltage of that bank when it is switched in, in place of the other bank.
For some reason I need to let my BatteryMINDer repair the sulfation (?) in that same battery about once a year.
I could of course just replace all four 12 volt 200 AH batteries, but that is about $1000. I'd rather use my BatteryMINDer once a year to "fix" it.
Maybe your issue?
