0190: Critical low-battery error" on Lenovo Thinkpad P51

[hoaca388]

My laptop is having this error because the battery is too drained, now can't run with the adapter, the battery is not charging.
If anyone knows how to fix this, please guide. Thank you.

[mon2]

Re: 0190: Critical low-battery error" on Lenovo Thinkpad P51

power down -> remove the battery -> review the logic board -> locate the DCin connector.

Review the usual 2 x DCin mosfets near this connector. What are the markings on these parts ?

Near these parts will be the charger IC with 'BQ' or similar markings.

What are the markings on the charger IC ?

Often the fault you have raised are linked to the DCin mosfets. We need confirm if they are defective or not using resistance checks.

With no power -> meter in resistance mode -> check the resistance of each mosfet as follows:

source (1-2-3) & drain (5-6-7-8)
source (1-2-3) & gate (4)
gate (4) & drain (5-6-7-8)

post each measurement and the scale used on your meter for these tests. If the resistance is low, the mosfet is defective and must be replaced.

[hoaca388]

Re: 0190: Critical low-battery error" on Lenovo Thinkpad P51

I have discovered that the adapter is broken. Thank you.