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Message: <blockquote data-quote="audiolife" data-source="post: 7574784" data-attributes="member: 541383"><p>Totally depends on how the battery was kept. I would not allow a battery to be stored under 12.6 after it was used. When I store it I would remove from the vehicle fully charge it up on an automatic charger leave it float for a few hours then remove from the charger. After 3 hours with nothing on it measure battery voltage again (if it is an agm cell it should be above 12.7) if not leave on float charge for 24 hours, then remeasure. If it reads above 12.7v measure it the next day to be sure it stays above 12.7. If it does then check weekly then monthly until ready to use. If you leave a battery discharged at 12.3 volts it can and will sulfate and can crystalize.</p></blockquote><p></p>

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