Syncing xbox one x controllers after changing the batteries

Look, try to hard reset the console. Then, change your batteries for a newer ones in your controller. After that, try syncing the controller to the consolle wireless again.

After, update your controller

Settings > devices > controllers and update it.

That should be having you out of the problem.

My controllers are updated. Last night I was playing Titanfall and my controller died. I quickly changed batteries and the controller would not sync. Took over three minutes of it being plugged into the Xbox One for it to finally sync with the console. Total
crap!

Make sure to press the connect/sync button on the console and then within 20 seconds press and hold the connect/sync button on the controller. Ensure that the controller is within a few feet of the Xbox 360 you are trying to connect to. If that doesn't
work, try and change batteries, using a different controller battery pack, or try a rechargeable battery pack (if you have one). Please let us know if this fixes your problem.

Have you tried to replace the batteries on the controller? Have you tried syncing with another Xbox? Have you tried to sync or plug it in to the Xbox or with a PC that is 8.x or higher?

Try that and then come back

try re syncing the controller after changing batteries. if the resync doesnt work i suggest waiting for someone else for a different answer i doubt you need to buy another controller.