BQ27427: 充电状态下，电压有时候升高有时候下降（剩余电量上升）。放电状态下，剩余电量有时候升高有时候下降（电池电压下降），这会是什么问题呢

在一次放电测试中，发现剩余电量先下降，再上升的现象，可能会是什么原因？log如下： xtb bq27xxx_read 1 di->regs[reg_index] 1c xtb bq27xxx_read 3 end ret read value 78 xtb bq27xxx_battery_read_soc soc value 78 xtb bq27xxx_read 1 di->regs[reg_index] 1c xtb bq27xxx_read 3 end ret read value 70 xtb bq27xxx_battery_read_soc soc value 70 xtb bq27xxx_read 1 di->regs[reg_index] 1c xtb bq27xxx_read 3 end ret read value 70 xtb bq27xxx_battery_read_soc soc value 70 xtb bq27xxx_read 1 di->regs[reg_index] 1c xtb bq27xxx_read 3 end ret read value 71 xtb bq27xxx_battery_read_soc soc value 71 xtb bq27xxx_read 1 di->regs[reg_index] 1c xtb bq27xxx_read 3 end ret read value 72 xtb bq27xxx_battery_read_soc soc value 72 xtb bq27xxx_read 1 di->regs[reg_index] 1c xtb bq27xxx_read 3 end ret read value 73 xtb bq27xxx_battery_read_soc soc value 73 xtb bq27xxx_read 1 di->regs[reg_index] 1c xtb bq27xxx_read 3 end ret read value 74 xtb bq27xxx_battery_read_soc soc value 74 xtb bq27xxx_read 1 di->regs[reg_index] 1c xtb bq27xxx_read 3 end ret read value 75 xtb bq27xxx_battery_read_soc soc value 75 xtb bq27xxx_read 1 di->regs[reg_index] 4 xtb bq27xxx_read 3 end ret read value 3949 xtb bq27xxx_read 1 di->regs[reg_index] 4 xtb bq27xxx_read 3 end ret read value 3949 xtb bq27xxx_read 1 di->regs[reg_index] 4 [14:45:30:590][I]{Initialize():55} Initialize(CameraServer)! Identity<0, -1> binder: 1519:1651 transaction failed 29189/-22, size 36-8 line 3304 xtb bq27xxx_read 3 end ret read value 3924 xtb bq27xxx_read 1 di->regs[reg_index] 4 xtb bq27xxx_read 3 end ret read value 3924 xtb bq27xxx_read 1 di->regs[reg_index] 4 xtb bq27xxx_read 3 end ret read value 3910 xtb bq27xxx_read 1 di->regs[reg_index] 4 xtb bq27xxx_read 3 end ret read value 3878 xtb bq27xxx_read 1 di->regs[reg_index] 4 xtb bq27xxx_read 3 end ret read value 3866 xtb bq27xxx_read 1 di->regs[reg_index] 4 xtb bq27xxx_read 3 end ret read value 3849 xtb bq27xxx_read 1 di->regs[reg_index] 4 xtb bq27xxx_read 3 end ret read value 3842