Thread: New Product ESR / IR Meter fo Lipos
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Old Jul 31, 2011, 01:53 PM
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Originally Posted by Harry D View Post
Here are a few IR readings on some GensAce packs I did a couple of weeks ago, using Wayne's meter :

3S1300 - Cells: 7.96 7.52 7.68 Total = 23.16 FOM =1.20
3S1500 - Cells: 6.80 6.64 6.84 Total = 20.28 FOM = 1.18
3S5500 - Cells: 1.88 1.92 1.84 Total = 5.64 FOM = 1.16

Temperature was 20C.

I bought these packs about two months ago. The 5500 mAh pack was "as received". The others have had a dozen or so cycles (by normal flying).

The low IR values are confirmed by CBA discharge tests and flying experiences. Truly remarkable packs.

These are their so-called 25C packs. (I forgot to mention that, as I never pay any attention to any manufacturer's stated C values because IME those numbers are completely meaningless.)
Total is sum of IR of the cells, so not the measured pack IR with the ESR/IR meter

question what means FOM ?
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