BQ27510-G3: RemCap slightly decreased although AvgCurrent shows still 0 (no load)

K.Yaita

Part Number: BQ27510-G3
Other Parts Discussed in Thread: BQ27510EVM

Hi Team,

We found RemCap slightly decreased although AvgCurrent always shows 0 (no load) with BQ27510EVM + battery.
RemCap decreased about 1mAh in 30 minutes.
Is it a possible case for BQ27510EVM?

StbyCurrent always shows -2mA.
Is it related to RemCap decreasing?

Best Regards,
Yaita

over 2 years ago

0 K.Yaita over 2 years ago

Guru 29655 points

Is there TI member who can support it?
If you need additional information or has something unclear, please let me know.

Best Regards,
Yaita

+1 Vos over 2 years ago in reply to K.Yaita

TI__Genius 10370 points

Yaita,

1) The TI gas gauges when in [REST] mode will rely on the batteries OCV to update its state of charge

2) if the standby current is -2mA as you say the gauge will still coulomb count this charge. Avg current will report 0 because that is below the default "deadband" current (3mA), but it will still count that charge expelled.

Thanks,

Eric Vos

Power management

Power management forum

BQ27510-G3: RemCap slightly decreased although AvgCurrent shows still 0 (no load)