With the right blade, you can even cut metal with this saw. The voltage amounts to 11 volts and should get the job done in most, if not all, cases.
The Range
Draper Reciprocating Saw Kit 2x 4Ah Batteries, Charger and Bag - Blue/Black
Electrical World
Draper Storm Force� 10.8V Power Interchange Reciprocating Saw Kit, 2 x 4Ah Batteries, 1 x Charger, 1 x Bag