Not a battery
a second plipper and key
( sandettie light vessel automatic New Twitter - @bollocksreally, Thu 6 May 2010, 12:30, 1 reply, 15 years ago)

burping machine
if it is a case of the button falling out (which happened to mine) get one of those cheapy burp machines from Wilkos and using some nifty knife skills replace your missing button with the burpy button. Then liberally apply gaffer tape.
If it is the tiny switch under the button, calculators have plenty, using more handy knife skills you can macguyver them into place. Then liberally apply more gaffer tape.
I should really post this to Wikipedia.
P.s. If it's neither of these you're pretty much fucked.
( spingers, Thu 6 May 2010, 12:38, Reply)

I like this business of using "MacGuyver" as a verb.
Mind if I borrow it? I'll be gentle...
(MrOli is ugly, but in the morning you will be sober, Fri 7 May 2010, 13:30, Reply)