Now 2 minutes on 1 charge

Hi there, on 25-10-2023 I wrote you my question about very little using time of my Wave-ring on 1 battery charge. See: Your request (1482) has been received and is being reviewed by our support staff. ‘To add additional comments, reply to this email.’ My question also was if it is possible to replace the battery. I’m very thankful if you answer me soon! Gr. Hans