[Oeva-list] AGM battery charging question

[Tim Kutscha]

Hi all,

I've got a technical question about AGM batteries for you battery experts out there.  A typical smart charging system will dump current into an  AGM battery up to a critical point (say 14.4 volts at 25 degrees C) and then hold that voltage until the current drops down to, say, 1 amp before dropping to a float voltage (like 13.6 volts).  My question is:  if the current going into the battery drops to around 1 amp, how long can I safely hold that 14.4 volts before hurting an AGM battery?  I would think that the current going in is so small, it would just be dissipated as waste heat.  I'm using 100Ahr Concorde Lifeline AGM batteries.  I have resistive shunt balancers on all the batteries for balancing that kick in around 14.4 volts depending on the ambient temperature.

Any thoughts?

Cheers,
Tim


      
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