Why does my battery replacement say "0% available, plugged in"?

Hi, I don’t know where else to look. I bought an iFixit battery and put it in an SP4. It turns on with power adapter connect, but turns off immediately after you unplug it. I tried going to device manager and uninstalling the battery driver + doing a full reset (via power + volume up)…nothing. I ran “powercfg /batteryreport ” and it recognizes the battery and says it’s fully charged.

Edit: a co-worker tested the capacitor that is known to fail and it is good.

Installed batteries

Information about each currently installed battery

SYSTEM PRODUCT NAME Microsoft Corporation Surface Pro 4

BIOS 109.3192.768 03.24.2020OS

BUILD 19041.1.amd64fre.vb_release.191206-1406

PLATFORM ROLE Slate

CONNECTED STANDBY Supported

REPORT TIME 2021-04-0708:54:45

BATTERY 1NAMEX910528

MANUFACTURER DYN

SERIAL NUMBER 39167

CHEMISTRY LION

DESIGN CAPACITY 35,250 mWh

FULL CHARGE CAPACITY 33,172 mWh

CYCLE COUNT-

2021-04-0606:19:29Connected standbyBattery100 %35,475 mWh07:18:40Connected standbyAC100 %35,422 mWh07:18:54ActiveAC100 %35,422 mWh07:19:59Connected standbyAC100 %35,422 mWh07:19:59ActiveAC100 %35,422 mWh08:24:23Connected standbyAC100 %35,422 mWh08:30:33ActiveAC100 %35,422 mWh09:34:53Suspended100 %35,422 mWh09:57:59ActiveBattery100 %35,422 mWh10:00:07ActiveAC95 %33,667 mWh10:58:36Connected standbyAC100 %35,520 mWh11:07:01ActiveAC100 %35,520 mWh11:52:24Connected standbyAC100 %35,520 mWh12:02:53ActiveAC100 %35,520 mWh2021-04-0708:54:33Report generatedAC100 %35,520 mWh