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Lenovo S145-15IWL (FV440/FS441/FS540 NM-C121) Don't charge battery
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Valdi [ 30 ноя 2021, 20:09 ]
Заголовок сообщения:  Lenovo S145-15IWL (FV440/FS441/FS540 NM-C121) Don't charge battery
Hello. I have a problem with this device, everything works except that the battery does not charge. The measurements in BQ24780S with the battery are:

1-ACN: 20,3
2-ACP: 20,3
3-CMSRC: 20,3
4-ACDRV: 26,2
5-ACOK: 3,3
6-ACDET: 2,8
7-IADP: 0,01
8-IDCHG: 0
9-PMON: 0,01
10-PROCHOT#: 0
11-SDA: 3,3
12-SCL: 3,3
13-CMPIN: 1
14-CMPOUT: 1
15-BATPRES#: 0,3
16-TB_STAT#: 1,42
17-BATSRC: 7,6
18-BATSRC: 7,6
19-SRN: 7,6
20-SRP: 7,6
21-ILIM: 1,42
22-GND: 0
23-LODRV: 0
24-REGN: 6
25-BTST: 7,20
26-HIDRV: 7,6
27-PHASE: 7,6
28-VCC: 20

I have changed BQ24780S, battery, AC adapter, and checked mosfets, and nothing. Help me please.
Digital_Expirience [ 06 дек 2021, 17:20 ]
Заголовок сообщения:  Re: Lenovo S145-15IWL (FV440/FS441/FS540 NM-C121) Don't charge battery
18 should be BATDRV. Check this voltage before plugging in the adapter. "BATDRV voltage is 6V above BATSRC to turn on BATFET"
Valdi [ 07 дек 2021, 18:51 ]
Заголовок сообщения:  Re: Lenovo S145-15IWL (FV440/FS441/FS540 NM-C121) Don't charge battery
Thanks for the observation. It was an error when transcribing the data. Sorry.

Then I write the corrected measurements again:

1-ACN: 20.3
2-ACP: 20.3
3-CMSRC: 20.3
4-ACDRV: 26.2
5-ACOK: 3.3
6-ACDET: 2.8
7-IADP: 0.01
8-IDCHG: 0
9-PMON: 0.01
10-PROCHOT #: 0
11-SDA: 3.3
12-SCL: 3.3
13-CMPIN: 1
14-CMPOUT: 1
15-BATPRES #: 0.3
16-TB_STAT #: 1.42
17-BATSRC: 7.6
18-BATDRV: 7.6
19-SRN: 7.6
20-SRP: 7.6
21-ILIM: 1.42
22-GND: 0
23-LODRV: 0
24-REGN: 6
25-BTST: 7.20
26-HIDRV: 7.6
27-FASE: 7.6
28-VCC: 20

I will review BATDRV.
Valdi [ 29 дек 2021, 06:20 ]
Заголовок сообщения:  Re: Lenovo S145-15IWL (FV440/FS441/FS540 NM-C121) Don't charge battery  [РЕШЕНО]
Finalmente no encontre la solucion. Tras comprobar los componentes uno a uno no di con la averia.

Cierro el hilo.

Gracias por su ayuda.
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