This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

BQ40Z50: SOH continues to report a continuous decline

Part Number: BQ40Z50

Tool/software:

Dear Expert

1、 Terminal issue:
This product is a high-end speaker brand and an app that is compatible with end users. It synchronously displays information such as speaker power and SOH, and the market continues to report a continuous decline in SOH.

2、 Speaker application information
1. Battery pack information: 2S3P 9000mAh BQ40Z50 R2 scheme
1. Speaker charging cut-off condition: Stop charging the battery when the battery SOC is detected to be 95%
2. Speaker sleep condition: When the battery level is detected to be less than 5%, the motherboard enters sleep mode, the charger is charged, and it can work normally.

3、 Practical application information of batteries:
1. Speaker charging processing mechanism: When the battery pack SOC is detected to be 95%, charging stops. When the charging is terminated, the battery voltage is less than 4100mV/cell, resulting in the battery not reaching full charge.
(As shown in the figure below: discharge, after charging, the cut-off charge is 95%)

2.GagueTermination Config Seting:

charge term taper current:300  /  charge term votage :100 / set voltage threshold :4200