force BQ27505 to determine SOC

Hi Luca,

Does the gauge work as expected for you at room temp?

First, can you confirm that you successfully configured the gauge to work with your battery by going through the bqEASY wizard in the evaluation software?

If not, I would expect the behavior that you reported.  How much capacity is it reporting in mAh when you reach 100% SOC?

To answer your specific question, yes, you can force it to take an open-circuit voltage reading and recalculate the current SOC with the Control(OCV) command, but this may not be the right way to solve your problem.

If you like, you can post your GG file and a log of your charge cycle and I'll review it to see if there is some explanation in them.

Hi,

I did a mistake in my previous message, the test wasn't conducted at high temperature condition. The ambient temperature was going from -10C to 60C and the device has been powered on at about 40C.

The gauge works as expected at room temp and has been configured using bqEasy wizard.

The data recorded are:

Status: 0x0A80

OpConfig: 0x8973

SOC: 100%

Remaining cap: 6647mAh

Battery temp: 11°C

Battery level: 3,476V

Min battery discharge: 3200mV

Max battery voltage: 4200mV

Battery temp range: -10°C to 60°C

Thanks

Regards

Luca