making bq20z65 reserve capacity available

Kjetil46144

I am going to have to reserve some ~15% of my battery capacity during pack calibration, but how do I best free this reserve capacity at the moment I need it (I have a microcontroller with SMBus attached to the monitor)?

over 13 years ago

0 Jackie Hui over 13 years ago

TI__Expert 3865 points

If you set a non-zero value for reserved capacity, that will cause RSOC to reach 0% earlier, but the device won't stop discharging until the voltage hit CUV threshold. You can continue to discharge and use that reserved 15% capacity.

0 Kjetil46144 over 13 years ago in reply to Jackie Hui

Prodigy 180 points

A-ha. Very informative, thanks a lot!

BTW: The LED display shows RSOC?

0 Jason Blackman over 13 years ago in reply to Kjetil46144

TI__Genius 14015 points

The LEDs can be configured to display either RSOC or ASOC (absolute state of charge) with the DMODE bit of the Operation Cfg A register. The default is to display RSOC (DMODE=0).

Regards,

Jason

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making bq20z65 reserve capacity available