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Old 04-27-2024, 08:57 AM   #13
nkaminar
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Join Date: Jan 2012
Location: Western North Carolina
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Default Re: Batteries completely discharging

Installing a battery cutoff switch is a good idea for two reasons: It will eliminate any drain on the battery when the car sits. It is also a safety item in case there is an electrical fire.

Your battery drain can be from any of the reasons mentioned above by others. It can be intermittent which will drive you nuts trying to find it.

Batteries don't like to be fully discharged. It can lead to lead sulfate crystals forming and warped plates. Both will cause decreased battery capacity.
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