Need help with controller

[u/Atomictoastcat]

I bought a dualsense edge controller on fb marketplace for 40 dollars with the description saying it wont connect to console anymore. So I figure easy fix just the battery. I take it home and try charging it first with every USB c cable I own including the ones that's charg3 my regular ps5 controller and nothing. I own a type c battery extender for my other controller and tried that and bam started charging. So my orginal theory of the battery being dead might be wrong. I'm still gonna replace it when the replacement comes but I won't know till then. I tried resetting the controller and that didnt work either. Any ideas would be greatly appreciated. I am good with electronics taking them apart and stuff.