my battery keeps losing its charge....it is new
how can i find out what is drawing from it?
joe
how can i find out what is drawing from it?
joe
Mar 13, 2006 at 1:57 AM
1994 Chevrolet Truck Battery Drain
JOSHER
- MEMBER
- 17 POSTS
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Here is the procedure to isolate a battery drain. Remove negative battery cable from the battery. Using a 12-volt test light, hook one end to the negative battery post the other end to the negative battery cable you just disconnected. The test light will glow or “light” if there is a drain. If the “light or glow” is faint, that is probably normal draw for the clock or computer. If the “light or glow” is bright, then there is a large drain. That should be corrected. Now start removing and replacing the fuses one by one until the light goes out; that one will be the circuit with the drain. Remember to hold in the button in the door jam for the interior lights.
Mar 14, 2006 at 12:34 PM
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Suggested Repair
Disconnect the negative battery cable and connect a 12-volt test light between the negative battery post and the cable. A faint glow can be normal for the clock or computer; a bright glow indicates a large drain that should be corrected. Pull and replace fuses one at a time until the light goes out to identify the circuit, and hold the door-jamb interior light switch in so the lights stay off during the test.
Conversation Summary
The owner of a 1994 Chevrolet truck with a 350ci engine says a new battery keeps losing its charge and asks how to find the draw. The expert describes a test-light parasitic drain check: connect the light between the negative post and the disconnected cable, then pull fuses one by one until the light goes out to isolate the circuit, while holding the door-jamb switch so interior lights stay off.