Hello:
I used the chip bq40z50-r1 to test the capacity of a lithium battery.
The circuit design is based on the following diagram.
My lithium battery has a capacity of 3800mAh
When I calibrate the chip with the discharge current,
For example, I used 8500mA for discharge, but read 8510mA from the chip register.
When I discharged the battery to 3%, I read the remaining 100mah from the register of the meter, but the actual battery still has a capacity of 180mAh
May I ask whether this value is feasible?
How accurate can the chip itself estimate the discharge capacity of the battery? 1%?2%?
