820-01521 Battery not detected / SMC issue

[2informaticos]

You should try known good battery.
"1st mosfet... 2nd mosfet", please use schematic!

Battery will not deliver any voltage, untill SYS_DETECT_L is pulled down; through R6950, or Q6955 (depends which present).

 

[ThisIsWes:AASP]

Don't have schematic for battery board... Do you?

Any other options before good battery?
Anyone have a machine they can remove the battery on and run diag to see if they get the same results?

 

[ThisIsWes:AASP]

Swapped out the battery and all is good.