Hello all,
I'm working with a battery pack 4 cells lithium in series and total capacity 3000mAh.
Pack is controlled by BQ2060 IC and the problem I see is the Remaining Capacity estimation while charging results in a wrong value.
When the battery is charged it reports around one third (around 1000mAh) of its total charge.
At this point, I change manually this remaining capacity to 3000mAh and then I start discharging the battery. While discharging, the Remaining Capacity counting looks working well because in parallel I'm measuring with oscilloscope current/time and both values, oscilloscope measurement and BQ2060 RM matches.
Finally, when battery becomes discharged RM says almost zero.
A wrong VFC calibration could explain this behaviour, RM wrong while charging and OK while discharging?
Thanks in advance for your support,
Best Regards,
Manel.