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Part Number: BQ76925EVM
I am having voltage reading problems on my BQ76925EVM. I am using the example code and just converting the ADC values to voltages as explained in the datasheet. I am measuring the voltages of a 6 cell LiPo battery. I have found that Cell 1 is consistently measuring lower when compared to a multimeter, measuring about 0.15V lower. The other five cells measurements match up to the multimeter. This has occurred over multiple batteries.
Is there any explanation to why this is happening?
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In reply to WM5295:
To follow up:
There was no voltage drop between BATT- and Cell 0. Also, I have several of these chips and each one acts differently. One might have cell 5 be off and another cell 6. What could be the cause?
I know there is offsets that are set at the factory. I am trying to calibrate those to see if they better match the multimeter. Could the factory set offsets need to be changed depending on the battery used, or for any other reason etc? It is a 12000mAh LiPo.
In reply to Travis Miller34:
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