HP ELITE X2 1013 G3 weird battery issue

[huzo]

For few seconds 8.8V on the D and G side of mosfet ,that is the pin #31 and #32 , S side , or the battery terminal is 0V. then it drops to 8.01V od the D and G side...

[mon2]

What mosfet part number is present at this location? The ISL evalboard shows a P-channel mosfet so if the gate voltage is lower than the source / drain voltage, the mosfet will be enabled.

Suspecting that the gate voltage should not be enabled at all times. Test this mosfet in resistance mode (without power) to confirm the mosfet is not defective.

[huzo]

the FET is 3P3R0 P -channel...it works,everything works, except the meter for the battery percentage...it is now charging the old battery with 600mA...the board has a problem that it doesn't see SDA or SCL in the I/O controller probably...maybe i should put the original 9538H chip, since there was no continuity to the SCL pin from the battery, there was 3.01V and OL on the instrument, and i have put the wire directly from the 9238H to the battery connector and now i have 3.46V on both pins and direct connection...but maybe this 9238 is not the same as 9538?

[mon2]

Yes, replace with the original charger ic and let us test again. Now that the smbus lines are fixed, the original part should work.

[huzo]

did that, all the same...i give up...