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Old 02-27-2012, 05:37 PM   #115 (permalink)
IamIan
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Quote:
Originally Posted by eq1 View Post
Thanks a lot for your help. I decided not to pay too much attention to my internal resistance calculations, as I don't really know what a significant value is.
It is more important how close they are to each other than it is what the absolute value is.

I think you did the right thing ... using it as one of several battery health indicators to decide what sticks you wanted to pair up together... the only other thing would be to do the same kind of thing to decide which to replace ... if you reach the point of wanting to replace some.

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Originally Posted by eq1 View Post
It seemed logical to me - that if the BCM monitors pairs of sticks, you should try to make each pair the strongest possible.
I agree.

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Originally Posted by eq1 View Post
One thing that seemed odd, or novel, was, on some of these longer assists, the SoC gauge might drop to 17 or 16, but it would pop back up to 18 or 19 - without having observed the charge gauge charging at all in the intervening time.
I suspect either back ground charging ... I've seen as little as 100mA actually going into the IMA battery ... but in the low amp range the OEM dash display won't show anything at all.

The other possibility is a positive recall ... the rare but does exist event where the car corrects SoC up.

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Originally Posted by eq1 View Post
So, hopefully this will last for some time.
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Originally Posted by eq1 View Post
So, I guess only time will tell if my pack's revitalized performance will actually last...
Keep in mind it is treating the symptoms not the issues that caused them. without modifications to the OEM system ... it is only a matter of time before the core issues recreate the symptoms you just treated... of course you can just do it again.
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