Micorsoft is not interested to replace the batteries.They only want us to buy a new tablet...programmed obsolescence
Never anymore one of their product
All the Microsoft Stores are permanently closed. Microsoft does not replace
batteries, they replace the entire device with a refurb. Costs are at https://support.microsoft.com/en-us/topic/how-much-does-out-of-warranty-service-cost-for-your-surface-device-or-accessory-4c77ac8a-e8c3-d0e4-7e8a-a29f768d43ff
- more info at https://support.microsoft.com/en-us/surface/how-to-get-service-for-surface-b06da716-0763-65b3-e2f2-116d9e30f877