Tool/software:
Hi team,
In our test, we set charge current (reg 0x14) as 4A~4.28A and monitor the battery charge current (reg 0x24).
However, we noticed battery charge current was dropped to 192mA unexpectedly by checking reg 0x24.
I’ve confirmed the charge status(reg 0x14) is 0x8400 which means input is present and charger is in fast charger mode, but I cannot explain why the charge current dropped.
Please assist us to identify the root cause.
// Set charge current (reg 0x14) as 4000mA but the battery charge current (reg 0x24) is 3840mA
[2025-06-04 18:22:51.179] Battery charge_current = 4000 mA
[2025-06-04 18:22:51.201] BQ25710: Write Charge Current 0x0f80, ret = 32
[2025-06-04 18:22:51.269] battery capacity: 69%
[2025-06-04 18:22:51.804] BQ25710: Read ADC IBAT pcharge(0x3b) pdis_charge(0x00) success, ret = 32
[2025-06-04 18:22:51.826] BQ25710: Read ADC IBAT, Battery charge current = 3776 mA, Battery discharge current = 0 mA
[2025-06-04 18:22:51.918] BQ25710: Read Charger Status 0x8400, ret = 32
// Set charge current (reg 0x14) as 4280mA but the battery charge current (reg 0x24) is 3776mA
[2025-06-04 18:22:52.076] Battery charge_current = 4280 mA
[2025-06-04 18:22:52.097] BQ25710: Write Charge Current 0x1080, ret = 32
[2025-06-04 18:22:52.121] battery capacity: 69%
[2025-06-04 18:22:52.601] BQ25710: Read ADC IBAT pcharge(0x3b) pdis_charge(0x00) success, ret = 32
[2025-06-04 18:22:52.624] BQ25710: Read ADC IBAT, Battery charge current = 3776 mA, Battery discharge current = 0 mA
[2025-06-04 18:22:52.715] BQ25710: Read Charger Status 0x8400, ret = 32
// Set charge current (reg 0x14) as 4280mA but the battery charge current (reg 0x24) drop to 192mA
[2025-06-04 18:22:52.872] Battery charge_current = 4280 mA
[2025-06-04 18:22:52.895] BQ25710: Write Charge Current 0x1080, ret = 32
[2025-06-04 18:22:52.918] battery capacity: 69%
[2025-06-04 18:22:53.398] BQ25710: Read ADC IBAT pcharge(0x03) pdis_charge(192mA) success, ret = 32
[2025-06-04 18:22:53.420] BQ25710: Read ADC IBAT, Battery charge current = 192 mA, Battery discharge current = 0 mA
[2025-06-04 18:22:53.512] BQ25710: Read Charger Status 0x8400, ret = 32
Thanks,
Leo
