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My battery won't stay charge even though I have new battery and alternate. Please help

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Just a thought,a have heard of alot of the phone chargers pulling down the battery overnight. Try to pull everything out of the 12v charge ports and USB ports if you have them. If you have a multimeter with an amp meter you can pull the negative battery cable off with key turned off,put the meter to amp setting and put red lead on cable and black lead on negative battery post. This will tell you what amp draw you have when car in just sitting. You should have a very small draw for the ECU but if it's close to 1 amp or higher you have a short.

Posted on Apr 30, 2017

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An electrical short or something staying powered on after car is parked. Could be a bad battery, but not likely these days. Can get it checked at a local parts store.

Posted on Apr 30, 2017

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You must first charge you battery
then unhook it over night , if it drain you have a parasite drain if your battery is still charged when you hook it back up. Now you must find what is still on when car is off
some times a penny could be in lighter socket trunk light still on cd player does not cut off you will have to check each fuse that does not work with car off if they are on you have a short get back to me

Posted on Apr 30, 2017

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If the battery light is on, I strongly suggest that you have the battery charged. It can be an indication of a weak battery or a faulty alternator. If the battery light still on after charging then the problem will surely be on the alternator itself. If that's the case the alternator should be replaced to resolve the problem.


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You may try to reset it to by removing the positive battery connector, letting it sit for at least 5mins. then reconnect it again. This will reset the system and can get the battery light off.


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If the battery light is on, I strongly suggest that you have the battery charged. It can be an indication of a weak battery or a faulty alternator. If the battery light still on after charging then the problem will surely be on the alternator itself. If that's the case the alternator should be replaced to resolve the problem.


If the battery won't hold charge even on a new alternator then the problem will be on the battery itself. It surely is in the end of it's service life and replacement will be necessary.


You may try to reset it to by removing the positive battery connector, letting it sit for at least 5mins. then reconnect it again. This will reset the system and can get the battery light off.


Hope this helps and thank you for using FixYa! Have a good one!

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Hello and welcome to FixYa!


If the battery light is on, I strongly suggest that you have the battery charged. It can be an indication of a weak battery or a faulty alternator. If the battery light still on after charging then the problem will surely be on the alternator itself. If that's the case the alternator should be replaced to resolve the problem.


If the battery won't hold charge even on a new alternator then the problem will be on the battery itself. It surely is in the end of it's service life and replacement will be necessary.


You may try to reset it to by removing the positive battery connector, letting it sit for at least 5mins. then reconnect it again. This will reset the system and can get the battery light off.


Hope this helps and thank you for using FixYa! Have a good one!

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1 Answer

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1 Answer

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