Hi All,
I'm trying to charge a 4 cell 1P 18650 batterypack with the BQ40z60EVM kit and BQStudio.
The BQ40z60 does not seem to go into balancing mode. Bit 2 (CBR) and bit 0 (CB) in the balancing configuration are set.
The bit registers show me that the balancer is enabled during charging and rest.
The GAUGE_EN bit is set in the Mfg Status init register.
After a reset, the balancer starts balancing for around 30 seconds, then the Cell balance times are zero again and the balancer stops. The Enable bit in the update status register is also cleared when the balancer stops.
The delta voltage of the cells is 17mV. The Min STart Balance Delta is set to 3mV.
How do I get the balancer to keep balancing? The firmware is updated to V0.15 build 21.