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? for you LRH mechanics, How much voltage drop overnight is OK in a car?
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<blockquote data-quote="Winkfish" data-source="post: 2673311" data-attributes="member: 98068"><p>If you have a clamp on amp meter that will help you in determining if you have something that is drawing down the system. If you can determine how much parasitic draw there is in the system when it is "off" you may then be able to determine have a bad ground or a circuit that is placing undo load on the battery when you think it is off. Your battery is falling down to a little less than 75% of maximum capacity overnight, that is a little much. You should also be able to have a local auto parts store do a load test on the alternator. It may be putting out the correct voltage however it may not be capable of producing enough current to get the battery back up to 100% during normal driving conditions.</p></blockquote><p></p>
[QUOTE="Winkfish, post: 2673311, member: 98068"] If you have a clamp on amp meter that will help you in determining if you have something that is drawing down the system. If you can determine how much parasitic draw there is in the system when it is "off" you may then be able to determine have a bad ground or a circuit that is placing undo load on the battery when you think it is off. Your battery is falling down to a little less than 75% of maximum capacity overnight, that is a little much. You should also be able to have a local auto parts store do a load test on the alternator. It may be putting out the correct voltage however it may not be capable of producing enough current to get the battery back up to 100% during normal driving conditions. [/QUOTE]
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? for you LRH mechanics, How much voltage drop overnight is OK in a car?
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