56-57 Sealed Maintenance Free Tar Top Delco Battery 2SMR53 (ND)

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Maintenance free means "no fluid" is needed. It does not mean that it can sit and not be charged. These are an active unit when the batteries are received. They need to be checked with a volt meter and kept in the top 50%. If monitored properly they should last 7-10 years. Absolutely no small
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171083
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Description
Maintenance free means "no fluid" is needed. It does not mean that it can sit and not be charged. These are an active unit when the batteries are received. They need to be checked with a volt meter and kept in the top 50%. If monitored properly they should last 7-10 years. Absolutely no small charges or maintainers should be used on the 12 volt batteries, they will reset the memory of the battery and without revering the process 2/3 of the battery will never get a charge and will deteriorate. Absolutely no charge over 15 volts on a 12 volt, and no higher than 8 volts on a 6 volt AGM's*. This will cause the AGM* battery to release pressure by popping its buttons, and will leak in the case and will no longer work. Even though the case will hold the leakage and will not go all over the vehicle there is no way to recover from this event. Neglect is also considered a warranty breaker.
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NOTE: This is a hazardous item and cannot be shipped by air or outside the Continental U.S.
Specifications
GM Item No. 1890587
Base Unit of Measure EA
Net Weight 35
Special Order False
Car Years 1 1956 1957
No. 171083
Search Description VOLTMETER
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