Out of curiousity I once bought a 7.2v nicad cordless screwdriver. Turned out to be a surprisingly handy tool but it's a tad ungainly. The Hitachi #DB3DL 3.6v lithium-ion cordless screwdriver has the same features but it's half the weight, slimmer at the business end, about 5 in. shorter overall, and has a replaceable battery (with an extra in the kit) so there's no downtime. Bet it'll be even handier.