Ive had my 19.2 volt stuff for a few years now, gone through 1 battery so far, and one is weak. I love my Impact, It has taken anything I have tried to take off so far.
-2001 Tahoe original 5.3 4x4 only 435k
-Down to 2 three wheelers
-1985 V65 Magna
-1973 CT70 with 125cc motor