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I actually have solo pros but couldn’t find it in the device selection so I did the closest thing if I plug it in it has a flashing white light that won’t go away no matter how long I leave it

How long have you left your headphones charging for? Often times if a device has not been used for a while, the battery can go below the recommended discharge voltage and not turn back on. That being said I would recommend that you leave your headphones charging for 12 - 24 hours before using them again. This will give the battery enough time to properly charge back up to the voltage it needs to be at. Please keep me informed and let me know if this ended up helping you, or if you need further information. Hope this helps.

Hi it sounds like the batter has properly died If you do want to replace it are actually fairly easy However I would do a little more research and ask more questions before buying a battery so treat it as a last resort Hope this helps Any questions please ask Thanks