Thread: New Product ESR / IR Meter fo Lipos
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Old Nov 17, 2013, 04:57 AM
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United Kingdom, Bracknell
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I received my meter from Wayne yesterday - a great piece of kit. Thanks to Gordon Tarling for the recommendation.

Got a bit of a shock with my cheap Zippy 2700 3S packs that seem to perform fine in a couple of sport models and a small quad ... the cell IRs (checked at about 19 degrees C I think) were:

39, 19, 39
16, 14, 15
38, 16, 17

A physically identical Overlander 2700 pack was 10, 11, 11. But the other three I had puffed in (careful) use, hence the Zippys!

In contrast the Zippy 8000s I use in my hexacopter seem OK ... most cells around 4 milliohms with not too much variation. Same for my Turnigy 5800s. But I'll certainly be keeping an eye on them from now on in terms of watching for deterioration of individual cells - the reason for getting the meter in the first place.
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