On Jun 8, 9:35*pm, "george [dicegeorge]"
wrote:

Could I dismantle the battery case and power the stapler from the mains
using something like Maplin's

I had need of a bit of compressed air recently and ran a car tyre pump
(normally run off the car cigarette ligher) off a 230/12V transformer
with a bridge rectifier. It wasn't happy and didn't want to go above
0.3 bar, although it will happily do 4 or 6 bar for its intended use.
The 0.3 bar was adequate for what I needed (leak testing with an ultra-
sonic leak detector) so i didn't persist. I assumed the current draw
was more than the transformer would supply for the maximum pressure
part of the stroke. You could probably get it to run properly with
some smoothing capacitors or a 12V lead acid battery on the outlet.

The same tranformer & rectifier arrangement has run a pressurization
unit (which has a similar diaphragm pump) quite happily up to 2 or 3
bar (water pressure) when used on the 24V terminals.

Probably cheaper to get Ni-cads, as the man said, if you put any value
on the time you'd spend trying to get such a lash-up to run reliably.