Re: [Amel Yacht Owners] Charging AGM batteries
Bill Kinney <greatketch@...>
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Because of their internal construction a full on classic thermal runaway is MUCH less likely to occur with good agm batteries. Lifeline claims they have never heard of it happening to their batteries. You can however, melt them down if the voltage is too high for too long causing the electrolyte to boil off.
Monitoring is simple. Fully charge, disconnect the charge and load, and then check voltage after a bit of time to rest. A shorted cell will quickly pull the voltage for that one battery down to 10.5. Otherwise, capacity testing and such can be the same as a flooded battery.
You'll also see a bad cell in your charging amps at full charge. They'll never drop down to the 0.3 amps or so that they should at the correct float voltage when the batteries are full.
On Dec 8, 2016, at 11:27, Kent Robertson karkauai@... [amelyachtowners] <amelyachtowners@...> wrote: