I’m on Medicare and it was 100% covered.
Battery life differs depending on the manufacturer of the device.
The medical provider that implanted mine uses Boston Scientific. He told me the battery life usually lasts a longer time and in their opinion is one of the better engineered. It also depends on what setting you have it on. You’ll have a remote that a representative from the company will set up for you with 4 settings. On mine, two settings you can’t feel, but it’s working. The other two you can feel. It’s kinda like vibration you can feel in your lower back and mine goes into my left butt cheek and hip. The Boston Scientific rep is with you from the time you get your temporary, permanent and beyond. You may need the programs changed as time goes on.
The battery/computer for the permanent is placed in the upper hip/butt cheek of your choice.
Depending on the program you find yourself liking the best will also determine on how long your battery lasts until it needs charging.
I usually get 5-7 days before it needs charged. Now, it will last a lot longer but then to recharge it will take a lot longer. I recharge when the battery is down a third and it takes approximately 2 hours to charge. To charge it patients are given a Velcro belt with a small pocket that holds a charging battery.
You turn it on, put it in the pouch, put the belt on with the charging battery on top the implant. It will give you a specific beep sequence to tell you it’s charged.
After it’s charged you return the charging battery to a cradle that charges it back up. It’s really quite simple, great engineering.
Surgery is usually done as an outpatient and takes approximately one and a half hours. Post surgical pain is moderate at worst and is pretty much gone in 2 weeks. For most people, 3 weeks you can do anything you want. No limitations.
As I said, it was life changing for me. I forgot what it was like to not be in acute pain for decades.
Good luck.