If you are asking about using the MagSafe Wallet with a MagSafe case, yes that is compatible.
Also see the following from iPhone Leather Wallet with MagSafe - Umber - Apple
You can even stack it on top of a case with MagSafe to create a look that’s unique to you.
If you are asking about using MagSafe Wallet with a MagSafe charger, see the following from How to use your MagSafe Charger with iPhone 14, iPhone 13, and iPhone 12 models - Apple Support
- Don't place credit cards, security badges, passports, or key fobs between your iPhone and MagSafe Charger, because this might damage magnetic strips or RFID chips in those items.
- If you have a case that holds any of these sensitive items, remove them before charging or make sure that they aren’t between the back of your device and the charger.