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FEZ Accu Test: Results

The first samples

I have tested the first four batteries and the tester already revealed one bad battery: its voltage dropped much sooner than with the other batteries. This is documented in the graph below:

Graph with some results of the accutest

The X-axis of the graph represents the time (minutes). The Y-axis represents the measured voltage (mV).

It is clear the batterie GP 35 is the worst batterie of the serie. Maybe time for it to retire?

Note: I am still working on the algorithm to measure the battery discharge curves. It is possible the internal resistance of the FET controlling this battery is lower than in the other FETs. This would cause it to discharge sooner than the other FETs. To be sure this isn't the case I will add a system to measure the electrical current too.

Copyright ©1998-2017 Vanderhaegen Bart - last modified: August 24, 2013