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BQ25892: the problem of charging

Part Number: BQ25892


My client uses BQ25892 in POS Project.

The abnormal charging mode is detected. When the battery power reaches 96%, the charging will be intermittent. What is the reason?

The customer feedback that there is no abnormality in hardware measurement . It is inferred that it is a software problem

The customer thinks this problem may be related to the triggering of ICO mode at 95%. There are several points my client wants to confirm:

1、what is the detailed working mode of ICO mode?

2、Why set 95%? 

3、Whether this phenomenon is a normal behavior in ICO mode

4、What will happen if  ICO mode is turned off?

Thank you