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Interstate batteries not up to ah ratingLots to read, but mine never got really topped off and were probably only 80-90% plus sulfating added to the problem. Took lots of babysitting on a friends old manual charger to clean up the mess and get the specific gravity up to 1.275.
First I recommend you get a good SG hydrometer and check each cell. Log it, write it down. Check the voltage against the SG. Mine showed that it was charged on volts, but SG showed 75%.
I bought the Renogy 100 watt suitcase and it works great. My controller has an equalization function and I can get my volts up to over 16.
