I'm sorry you are faced with this decision.
How long did the SCS work before you noticed it wasn't doing it's job anymore? I've heard of 1 or 2 others in the RSD forum who still have their units in them but are not using them.
Have you noticed your RSD spread since this was installed? You might ask Dr what he thinks - if there are risks of spread.
If the battery is causing you this much discomfort, I'd probably want it out also.....but this is you and the doctor must ultimately decide.
Best Wishes in whatever you do!
Please keep us posted....
Caring,
Rae