I have a bunch of black and decker stuff -- the quality and price are on the low end but over the last 5-6 years I have only had one battery fail on me (out of 6) and all of the tools are still operable. Battery life kinda sucks for some things like a leaf blower (batteries are 1.5ah to 4.0ah, the 1.5s will get ablut 10 minutes on the blower) but it is enough for my yard, and easy enough to swap out quick.

__________________
TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth