I've had less than stellar success with my 2/4/8amp BatteryMinder. It seems to
work okay as a normal over-the-weekend charger but I haven't had much success
recovering 3 AGM batteries that my APC UPSes had declared 'dead'. None of the
batteries weren't so far gone as to cause the BM to reject them outright but
they had no capacity under load. BM didn't recover any of them to the point
of being useful again in a UPS. Left one of the batteries connected to the
BM for six weeks but no dice.
Maybe my expectations were too high or maybe desulfation cycle works only
when used regularly or maybe it takes several months to recover a badly
sulfated battery?
JM
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