What’s wrong with my battery pack/controllers

Hi and thanks for reaching out. I hope you’re doing well. I'm an Independent Advisor and a Microsoft user like you and I'll be happy to help you.

There could be a problem with the rechargeable battery pack or the controller's battery compartment. Kindly try the following and see if it helps:

1. Check that the battery pack is properly inserted: If the battery pack is not properly inserted, the controller will not turn on. Check that the battery pack is securely connected to the controller and that the contacts are clean and debris-free.

2. Inspect the controller's battery compartment: Inspect the controller's battery compartment to ensure that there are no damaged or corroded contacts. If you notice any damage, you may need to replace the controller or contact the manufacturer for repairs.

3. Check the charge level of the battery pack: Before attempting to use the battery pack with the new controller, ensure that it is fully charged. If the battery pack is not fully charged, it may not be able to turn on the controller.

4. If the preceding steps do not work, try using a different rechargeable battery pack with the new controller to see if it works. If it does, the original battery pack may be defective and must be replaced.

the battery pack fits as in clips in but it seems as if the controller does not recognise it as a battery pack (i mean the controller what came with the slim). the battery pack works fine as i have tried it on a older controller (a controller from my previous
console but one i brought like 2 months ago). the battery does not power the controller nore does it get charged by the controller when the cable is plugged in. the charge cable fits in fine and powers the controller when it is plugged in. there is nothing
wrong with the battery or cable it is the new controller what has been made not to fit the old battery pack so Microsoft make more money as you have to buy a new charge kit. its a robbery unless its my new controller what is not working properly then i will
more then happily send it away to get repaired with no expense from me as it has never worked from the start and do not believe i should pay for something to be fixed what was broke when it was shipped in that condition.

But then if it;s the wrong battery pack, it shoudn't work with either controller ...the fact it works in one but not the other points to an issue with the second controller

The Xbox One Venom battery pack won't even fit in the Series X controller (or at least not without trimming bits off it)..as the OP can fit the pack with no issue, it suggests it's the right battery pack. Unless Venom have released more than one battery pack for the Series X?

Is your battery pack loose? Try a different battery pack on it and see what happens or switch battery pack with another controller.

What about the battery pack... Could I use my packs on this new controller?