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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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04-17-2019, 10:01 AM | #21 |
Getting Wild
Join Date: Aug 2016
Posts: 124
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Re: Batteries are bone dry
If there was a dead cell it would show less then 6v correct? Like 4.22v
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04-17-2019, 10:58 AM | #22 | |||
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: Batteries are bone dry
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Dead cells tend to drop the battery voltage by about 2V, but not always. In other words, a 3 cell lead-acid battery that measures about 4V definitely has a dead cell, but one that measures about 6V may have a defective cell that isn't detectable just by a static voltage measurement. Placing the battery under load (load testing) will usually identify batteries with bad cells. The at-rest voltage of lead-acid, deep-cycle, wet-cell battery is determined by chemistry rather than storage capacity, so a healthy 10AH battery will have the same at-rest voltage as a healthy 1000AH battery, but not the same runtime. The battery plates become sulfated during the normal aging process and the battery's storage capacity becomes progressively smaller as it ages. Things like sitting for a year without being charged accelerates the normal aging process exponentially and, at best, your batteries will have very little storage capacity. Your batteries are at about twice their normal usable lifespan expectancy and have been severely abused, so I doubt if they'll ever power the cart much more than 10 minutes. |
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