Adding water to AGM battery?
Greetings, I have 2 Concorde 6V AGM batteries in my TC which are almost 10 years old. These batteries have been used continuously for the last 8 years as I live full-time in my rig. Batteries are c...
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More than likely your loss of capacity is due to sulfation not necessarily low water levels. You might be able to get some capacity back with a conditioning charge but IMO they're just old and need to be replaced. BTW, those plugs are there so the batteries can vent if they're overcharged.
