Hi, Regina, I am nini53/Kathy, which ever you prefer. I have a Medtronics Neurostimulator in my lower right back. After many tries, it does not work and is never going to work.
This is an isolated incident I believe everyone body reacts differenly to hardware. So, at this point I would advise you to firmly have a rep. work with you before one problem becomes many. You have to keep calling them, and nagging them to help you.
Maybe your pm doctor could help you in that area, have your pm doctor call and get this problem fixed. They respond quicker to doctors then just us people who have there hardware in our backs, stomachs, etc.
I have a very large battery pack that is totally useless to me, but its mine they tell me. So if you have need of an extra, I can give you the model numbers to see if they match yours and you can have it. I have no use for it. I would love for it to be able to help someone else.
Take care, and keep buggin them, call 5 times a day and more if you have to. Good luck, how you a feeling well today.