OT backup battery question

KenK · 2013-08-23T16:45:34+00:00

I have a deep discharge battery with a small slow charger I use to provide a light and fan during power outages. We had an 11 hour outage last night and I had to go through the pouring rain and mud to get the battery from an adjoining building. Ugh! BTDT before. I decided to start keeping the battery in my mobile home bathroom to avoid this in the future. The bathroom has an always-open window. Should I be concerned about trickle charging the battery there? TIA

Aug 23, 2013 21 Replies

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micky 13 years ago

And besides the window, there is the door to the bathroom. I doubt if that is closed much, so the hydrogen dissapates through the whole house, exits through open windows and doors.

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micky 13 years ago

IIRC, batteries (of all chemistries?) keep 90% of their voltage until they are 90% discharged. I wonder if it is the same on the way back up, that they have 90% of the rated voltage when they are only 10% charged.

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