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Can you "recondition" lead-acid batteries?
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<blockquote data-quote="trumpet" data-source="post: 7170390" data-attributes="member: 628688"><p>1) Your voltage reading with the car running is not the battery's voltage but the charging system's voltage.</p><p></p><p>2) A fully discharged battery will read over 9V. It's not storing volts, but rather it's potential energy stored chemically. If your reading was correct and the batteries did actually get down to 5V I would be surprised.</p><p></p><p>3) You need to disconnect the batteries and charge them with a trickle charger at room temperature. Take them into a heated environment, preferably NOT into your home as they can release hydrogen gas while charging, and let them naturally warm up. This is the best way to safely charge them after getting discharged, especially in the dead of winter.</p><p></p><p>4) If you have a battery store nearby they will probably test your batteries for no charge. You'll need to bring them in after fulling charging them, and they will put them on a load tester. It's the only sure way to know if they are toast other than waiting for your car to leave you stranded.</p></blockquote><p></p>
[QUOTE="trumpet, post: 7170390, member: 628688"] 1) Your voltage reading with the car running is not the battery's voltage but the charging system's voltage. 2) A fully discharged battery will read over 9V. It's not storing volts, but rather it's potential energy stored chemically. If your reading was correct and the batteries did actually get down to 5V I would be surprised. 3) You need to disconnect the batteries and charge them with a trickle charger at room temperature. Take them into a heated environment, preferably NOT into your home as they can release hydrogen gas while charging, and let them naturally warm up. This is the best way to safely charge them after getting discharged, especially in the dead of winter. 4) If you have a battery store nearby they will probably test your batteries for no charge. You'll need to bring them in after fulling charging them, and they will put them on a load tester. It's the only sure way to know if they are toast other than waiting for your car to leave you stranded. [/QUOTE]
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Can you "recondition" lead-acid batteries?
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