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Search: Posts Made By: willforest
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Forum: Audio / Security / Video
05-25-2009, 08:37 PM
Replies: 10
Views: 22,235
Posted By willforest

Re: voltage while car is running?

The alternator's voltage output depends on air temperature. When it's really cold the battery becomes more resistive and requires a higher voltage to get charged. The regulator typically puts out a...
Forum: Audio / Security / Video
05-21-2009, 11:58 PM
Replies: 10
Views: 22,235
Posted By willforest

Re: voltage while car is running?

I think a fully-charged car battery, in good condition, with no load on it, will measure about 13.2 volts. With the engine running, if the alternator and voltage regulator are working correctly, you...
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