I've had my kit for 9 years,
1/2" drill, sawzall, light, and reciprocating saw. replaced some guides and connectors in the sawzall, and have only killed 2 batteries so far (1 just died @9 yrs old)
Also have a 2nd 1/2 drill and a 3/8" right angle drill,
I use mine a lot on the farm and house...