Gemrod - Got my calipers back in January. While I MIGHT need one spare battery before they all go bad, there's no way I'll use both. The one I keep at home will have the battery replaced on my dime. The one I keep at work will have the battery replaced by my employer. We keep batteries on hand for this, so it's no big deal.
Soooo........as I see it, unless you want me to just waste a battery, you need to PM me with your name/address so I can send it out Monday morning. You'll just be doing your part to save the local landfill here.
There's absolutely NO WAY you're going to pay me for this. I'll wrap the battery (still sealed in its wrapper, BTW) in a copy of the instructions. Mine is the 6" caliper, model#47257.