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Unread 05-04-2013, 00:08
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Re: Battery failures?

We had a battery from 2011 which died this year. Cause of death was most likely being left discharged over the summer.

Showed ~10.5 volts which collapsed to nothing under any load, the Shumaucher charger would remain in desulfation mode indefinitely, and after 12 hours on the charger it would read ~11.5 volts, but then drop .1 volts every 30 seconds until it stabilized around 10.5 volts again.

Keep the batteries charged to at least 12-12.3 volts at all times. If you just leave them in storage like we did, check them every month with a multimeter and make sure they're in a healthy range.
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