BQ34Z100-G1: Underestimating self-discharge

Carl Banks

Prodigy 110 points

Part Number: BQ34Z100-G1

Hi,

We've found that the RSOC remains high after a full charge for longer than expected.

It can take up to 3 or 4 days to drop from 100% to 99%.

I believe that NiMH typically loses 10% after 24hrs and so the FG seems to be underestimating self-discharge.

I cannot see any settings for self-discharge, so I assume that this calculation is hidden within the algorithm?

Or Is it affected by the golden image creation or chem ID?

Thanks

over 8 years ago

0 Onyx Ahiakwo over 8 years ago

TI__Guru* 76230 points

DId you configure the gauge for NIMh cells? You may want to check the True SOC, because if the battery voltage has reduced from the value that corresponds to full charge, if smoothing is enabled, it will still keep the SOC at 100%.

thanks
Onyx

0 Carl Banks over 7 years ago in reply to Onyx Ahiakwo

Prodigy 110 points

Hi Onyx,

Thanks for your response.

Could I have your email address please so that I can communicate directly?

Regards.

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BQ34Z100-G1: Underestimating self-discharge