I had my lower one done in June and upper done in August. I LOVE mine, too. Both my batteries were implanted in my lower back (the neck area sounds...ugh!). They do annoy me a bit, as they do put more pressure in that area. ( And that's the spot you'll get hit with doorknobs and shopping carts -LOL). The thing that worries me is, they say it takes 2 years before scar tissue stops growing and I hope and pray there won' t be much more!

It is a trade-off for use of these stimulators....but oh-so-worth it