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Old 07-05-2023, 01:01 AM   #23
dsraven
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Join Date: Nov 2010
Location: calgary alberta
Posts: 7,900
Re: Battery draining

0.07 volts is a pretty small draw. can you get an amp reading on that as well? seems like a 7/100 of a volt draw could be a meter calibration even. check for an amp draw and you will see how much current is being used that amounts to that voltage draw, if any. to get 7/100 volt draw the draw would need to be through a bunch of resistance, thats not even enough to light a bulb. as an example, one of those little 194 bulbs would draw less than 3 amps at normal battery voltage.
a simple way to figure it out is ohms law. basically voltage equals amps x resistance. you could google ohms law for a tutorial on it, how to use it for valtage drops in circuits etc.. basically you disconnect the battery and then connect the multimeter (set to high dc amps) in series. connect the one lead to the cable and the other lead to the battery. all current will go through the multimeter so makw sure you do this with the key off. normally this is when I would start pulling fuses untill I find the one that makes the current draw go to zero when the fuse is pulled.
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