Charging AGM Batteries
I was looking for info on trying to charge, recharge AGM Batteries. If a convenional automatic charger is set to the deep cycle 2 amp setting, will this over charge the AGM Battery? Constructive comme...
Forum Discussion
CA Traveler wrote:landyacht318 wrote:I saw that also. The following information is on my battery label. Of course the actual label is half for the 6V battery. So I assume that both sets of numbers are correct.
Was just on lifeline's page and am impressed with its depth
They say 14.3v max +/- 0.1v acceptance
and 13.3v +/- 0.1 float
For 2 GPL-4CT Lifeline AGM batteries in series the charging voltage is bulk 14.2-14.4 and float 13.2-13.4.
14.3v +/- 0.1v = 14.2-14.4V, or Abs
13.3v +/- 0.1V = 13.2-13.4V, or Float
As to rate/current/Amps:
Lifeline 5.4 Charging wrote:
...The charging current during the Bulk stage should be set as high as practical; higher current levels mean faster recharge time.
For repetitive deep cycling, chargers should have an output current of at least 0.2C (20 Amps for a 100 Ah battery). If the output current is less than this value, the cycle life of the battery may be negatively affected.
Due to the low impedance design, Lifeline® batteries can tolerate in-rush current levels as high as 5C (500A for a 100Ah battery).
They say bulk, but I believe they mean to include Abs in the 14.3TCV(temp-comp-Volts) spec.
Doesn't this say that regular temp-comp charging hard-limits Volts, but encourages higher Amps?
HTH;
John
