kiwifidget:
@mugs2000 Thanks for the offer but I am sorted now.
Hah - I don't think he was offering it to you, just letting you know how long the batteries in these things can last!
I got an AEG 12V drill/driver combo from Bunnings and am very happy with it for my tootling around the house. Really like the small size/weight and it seems to pack a wallop (especially the impact driver). I'd imagine 18V is a better choice for any kind of really serious project though.