Yeah that’s a pretty large amount, if it’s not the fuel gauge then it’s possible you have shorted or partially shorted rail. The measurments I mentioned earlier should rule that out for the most part.
Did you check to see if the charge situation changes with board and battery only (no lcd connected, GC etc) just want to take them out the equation. ?
New fuel gauge appears to have solved the slow drain issue, so that’s some good news. This thing is 99% working normally now. The only remaining oddity, is that it won’t charge unless it’s booted.
I installed a spare hwfly chip I had on hand to read battery info and everything is reporting normally, which is great news. The “unless it’s booted” part of the charging circuit is my last remaining mystery: while I’m in the pre-boot/hekate menu if I plug in, it does not charge. As soon as I fully boot, it will start charging normally.
The 17050 test points from your image gave me continuity, so I think I’m in the clear for that IC now - especially since the draining issue is resolved now.
The APU doesn’t handle any of the charging circuit, does it? As far as I can tell, the M92 is negotiating the voltage properly and the BQ is charging properly - but only after a software event occurs. Do you think the APU could have a minor fault here?
Glad to hear fuel gauge did indeed resolve your issue 
It won’t be software related. Hardware first.
Could really do wiith verifying all USB lines to IC destinations in resistance so you can rule out open lines/partial opens, bad components (for example filter inline of usb lines for example) etc as from what your describing USB is not prompting the console to boot (not turning on when USB is connected though please confirm if i’m wrong)
Also,
If you can confirm that too.
Sorry, that was my poor choice of wording. From the preboot/hekate loader or when powered off it is in a no-charge state. As soon as the OS boots, it starts charging as indicated by the charge icon as well as the usb power meter. If I shut down/power off and then plug in USB it will boot, but not charge until the OS is booted and I put it to sleep. Pretty wild.
I will absolutely run the test with only board and battery - I completely missed that test. I’ll also look for a post with expected resistance values for the Lite’s usb-IC destinations. Thank you.