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I have a system built around an ARC-1231, and since a few days, the battery is always shown as "Charging (96%)". As this looks fishy to me, I'd like to test the battery.
As I haven't found anything about running a battery test in the manual, I wonder how other people have done that. Disconnect and discharge via resistor and multimeter?
This is normal. "Charging" also includes float charging, which the controller always does. The "96%" is an estimate of the charge level. – David Schwartz – 2013-08-04T18:25:36.827
How old is it? Is it li-ion? If it is 2-3years old, and is not normally charging to full, that is a specific indication that the battery is going bad. There are 4 other ways to get clues about a li-ion going bad, and many factors that can confuse the issue, but if the battery is Old, it is almost a waste of time to test it. – Psycogeek – 2013-08-05T06:36:14.647