Thread: New Product ESR / IR Meter fo Lipos
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Old Sep 01, 2013, 11:17 PM
mhavlena is offline
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Strange readings from ESR meter?

Wayne,

I recently encountered strange readings from my meter, I was hoping that you could shed some light on this.

I discharge one of my 2S lipos (5000 mah, 30C) at 30 A to 6.0 volts. pack temp increased to approx 40 deg C. I then tested the pack on the meter, one cell read very low 1.3 mohm. After successive pushing of the bottom, the resistance was dropping, it went to 0.36 mohm, then went to 40.05 mohm??!!

I tested on another pack (same type), when testing for resistance after a 30A discharge, the reading for the pack was at 400+ mohm, and each cell at 40+ mohm. When the pack cooled, readings were back to normal, approx 4 mohm per cell.

Does this have something to do with the meters resolution or something?

Appreciate any insight that you could provide.

Regards,
Mike.
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