Hello, There is a way to change the battery. You need to purchase two of them below:
Then follow the instructions at the link below:
There are pictures of the dis-assembly at the following link as well:
If you need further assistance let me know. Please do not forget to click the 5 STAR RATING, at the top of the page for my efforts. It is my livelihood and you can follow up at any time if needed.
Thanks, ***** ***** try that, and if it works I will definitely give you a five star!