@thankful1
I'm not sure about a 10 year battery but even if it is true, how many 10 year intervals do you have left to live from the age you are now until you become say 90 years old? That is how many surgeries you will need for battery replacements (of course, this is only a rough estimate). If you are considering the surgery, I will only caution you to do your own research and read up on as much as you can about it, before going under the knife.