Thread: New Product ESR / IR Meter fo Lipos
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Old Feb 10, 2013, 02:05 AM
Wayne Giles is offline
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Originally Posted by hethjo View Post
Hi, I need some advise please. I have a Turnigy 2200mAh 3S 25-35C discharge rate that is quite puffed. Per the meter the IR is 7.64, therefore true C=19. Then I have Lipos that are not puffed, a Turnigy 2200mAh 3S 20-30C discharge rate, IR 9.64, therefore true C=17 and Zippy 2200mAh 3S 20C discharge rate, IR 13.64, therefore true C=14.

I've often read that puffed Lipos should be disposed of, but the puffed one certainly appears to be in a better condition than the other two, is it fine to continue using it?


Hi Hennie,

I don't think there is a problem in continuing to use a puffed lipo.
Lots of people do so and report that they still continue to perform OK which would tie up with your IR readings.
The IR of all lipos increase generally with age so that you would expect the real
C rating to fall. When the pack is really at the end of its life, invariably one cell will rise dramatically in IR and that becomes very obvious in cell IR readings and in lack of performance.
I hope your meter has been useful.

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