# New battery dead, is it the alternator

**URL:** <https://community.cartalk.com/t/new-battery-dead-is-it-the-alternator/37786>\
**Category:** Maintenance/Repairs\
**Tags:** explorer, ford\
**Created:** [October 8, 2009, 10:59am UTC](https://community.cartalk.com/t/new-battery-dead-is-it-the-alternator/37786 "2009-10-08T10:59:28Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![kescott1910](https://avatars.discourse-cdn.com/v4/letter/k/958977/32.png) [@kescott1910](https://community.cartalk.com/u/kescott1910)\
**Post date:** [October 8, 2009, 10:59am UTC](https://community.cartalk.com/t/new-battery-dead-is-it-the-alternator/37786/1 "2009-10-08T10:59:28Z")

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2003 Ford Explorer XLT with 110K. My wife left the lights on SUV and drained the battery. I could not jump it. Noticed it had the original battery in it so I replaced and it drove fine for 1 day and died again(lights were not left on). I checked voltage of battery and it was 7.6V. Is it the alternator? If so, after I install new alternator how can I recharge my new battery…it’s only 2 days old?

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**Author:** ![andrew\_j](https://avatars.discourse-cdn.com/v4/letter/a/91b2a8/32.png) [@andrew\_j](https://community.cartalk.com/u/andrew_j)\
**Post date:** [October 8, 2009, 11:06am UTC](https://community.cartalk.com/t/new-battery-dead-is-it-the-alternator/37786/2 "2009-10-08T11:06:59Z")

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Get the charging system checked. Some auto parts places do this free if you want to avoid the diagnostic charge.

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**Author:** ![mcparadise](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mcparadise/32/32_2.png) [@mcparadise](https://community.cartalk.com/u/mcparadise)\
**Post date:** [October 8, 2009, 11:11am UTC](https://community.cartalk.com/t/new-battery-dead-is-it-the-alternator/37786/3 "2009-10-08T11:11:53Z")

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Have the battery and the charging system tested. Most auto parts stores (or wherever you bought the battery) will do this free. It could be a defective battery or it could be something else. Don’t guess. Test the components and be sure.

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**Author:** ![oldschool](https://avatars.discourse-cdn.com/v4/letter/o/e19adc/32.png) [@oldschool](https://community.cartalk.com/u/oldschool)\
**Post date:** [October 8, 2009, 5:44pm UTC](https://community.cartalk.com/t/new-battery-dead-is-it-the-alternator/37786/4 "2009-10-08T17:44:23Z")

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Remember a free electrical system test is worth just what you paid for it,have a real mechanic check you FORD out.

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**Author:** ![Cougar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cougar/32/21348_2.png) [@Cougar](https://community.cartalk.com/u/Cougar)\
**Post date:** [October 8, 2009, 7:04pm UTC](https://community.cartalk.com/t/new-battery-dead-is-it-the-alternator/37786/5 "2009-10-08T19:04:40Z")

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It does sound like the alternator or the wiring to it has a problem. Use a battery charger that can deliver 8 to 10 amps to charge the battery back up. Don’t use the alternator as a battery charger, even if it is working like it should be.
