Battery charge and discharge specs

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01-27-2022, 04:08 AM

fearnow

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Battery charge and discharge specs

I am reconditioning my batteries and having trouble finding the charge/discharge specs. I found them for 7v Prius cells but mine are reading in the 11v range so I assume the mAH values will be different as well as discharge and charge limits. I have a 2009 Tahoe. Any advise will be greatly appreciated.

01-27-2022, 05:27 AM

S Keith

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Re: Battery charge and discharge specs

You've posted in the GM forum. If you have a GM and your modules are measuring 11V, something is drastically wrong. They are the same modules as the Prius.

If you have a GM, and you're trying to recondition your pack, don't bother. Replace all 40 modules.

01-27-2022, 05:41 AM

fearnow

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Re: Battery charge and discharge specs

So you are saying I should be getting 7 +- volts? I'm not getting any codes, but tired of the bucking when the batteries are low.
Why not recondition them? It seems to work with the Prius vids I have seen.

01-27-2022, 06:14 AM

fearnow

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Re: Battery charge and discharge specs

Haha. My volt meter has some real issues! I used another and picked up 7 +- volts. Thanks for the heads up. Going to give recon a shot. Will post results.

01-27-2022, 06:20 AM

S Keith

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Re: Battery charge and discharge specs

Quote:

Originally Posted by fearnow

I see the above message in my email, but I don't see it on the forum.

Because the Tahoe is not a Prius. The battery management of the GM is horrifying. It destroys the batteries.

This Silverado (same battery as yours) had only 57K miles on it:

https://electricvehicleforums.com/fo...iles-p0-32286/

01-27-2022, 06:27 AM

S Keith

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Re: Battery charge and discharge specs

Quote:

Originally Posted by fearnow

Haha. My volt meter has some real issues! I used another and picked up 7 +- volts. Thanks for the heads up. Going to give recon a shot. Will post results.

I urge you to recondition only 2 modules: #1 and #40. Use those results to make a decision if you want to continue. They will be the BEST in the pack by a substantial amount.

Last edited by S Keith; 01-27-2022 at 07:30 AM.