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Super Mechanic
Super Mechanic, Master technician
Category: Chevy
Satisfied Customers: 17006
Experience:  29 yrs. exp., ASE master, cert. in G.M. electrical, a/c, susspension, brakes, electronic steering
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My battery keeps draining yet my alternator is new and so is

Customer Question

My battery keeps draining yet my alternator is new and so is battery. Any ideas?
JA: Have you tested the battery with a voltmeter? And can you see if it's leaking or not?
Customer: Yes and no leaks
JA: What is the model/year of your Chevy?
Customer: 2010 hhr lt
JA: Are you fixing your HHR yourself? What have you tried so far?
Customer: Replaced battery and alternator brand new as of last week. Did notice radio lights stay on when car is off and keys is out of ignition
JA: Anything else you want the mechanic to know before I connect you?
Customer: All I can think of
Submitted: 11 days ago.
Category: Chevy
Expert:  Super Mechanic replied 11 days ago.

Hello and welcome. My name is ***** ***** you for visiting the site, I am reviewing your question and will reply shortly, thanks.

Expert:  Super Mechanic replied 11 days ago.

Let me start by saying that any money that you paid, or if you have a subscription, that money stays in your account until the answers are rated, (positive) regardless of how fast or how long it may take to get finished. You can FOLLOW UP AT ANYTIME, even after rating.

As long as the alternator is charging the battery when the engine is running. You will want to check for a current draw. Normally that is done by disconnecting the negative battery cable and hooking up an amp meter in series with the circuit.

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Also can be done with a 12 volt test light. You just go from the battery terminal to the cable end, (disconnected) and see what the draw is or if the light comes on.

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The recommendation for maximum parasitic drain is around 30 mA (0.030 amp). A typical drain today actually falls into the 7-12 mA range, even though some vehicles do approach the maximum. Multiply the drain (in amps) by the time (in hours) the battery sits without being recharged. The result is the amount of AH consumed by the parasitic drain. The actual drain may be small, but over time the battery grows steadily weaker.

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If so, then you will want to start pulling fuses one at a time until the light goes out, (or meter goes down) and that will be the circuit in which the draw is in. If no fuses being pulled cause it to drop, then unplug the alternator then the starter. They could do it but it's rare.

Just remember to keep the doors closed, (or dome light disabled) and the hood light unplugged,

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Please don’t forget to rate the answer, **** THAT IS THE ONLY WAY I GET PAID **** if you need any more on it, I will be here.

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Thanks

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Customer: replied 11 days ago.
Sounds good.
Expert:  Super Mechanic replied 11 days ago.

You’re welcome and please come again, anytime, thanks.

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Please don’t forget to rate the answer, (positively) **** THAT IS THE ONLY WAY I GET PAID **** if you need any more on it, I will be here.

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Customer: replied 11 days ago.
Please cancel any service. Not much of a help.
Expert:  Super Mechanic replied 11 days ago.

Okay, thank you for using the site and please come again, anytime.

Expert:  Super Mechanic replied 9 days ago.

It is showing that you are waiting for me. Let me send this as a test, thanks