I use my DeWalt tools for work and do they get a work out. It is nothing for me to grab a 1/2" by 12 " long massonary bit and drill through concrete block. One thing I have heard and learned from experience is about over heating the batteries. If the battery starts to get hot change it out and let it cool before using it again. Take it out of the charger when it gets charged leaving it in will only heat it up and destroy it. Change the battery when it will not do what you are using it for. No need to drain it dead. When mine does not run the saw well enough it will drive screws for awhile.
The circular saw and sawzall are both pretty good and come in mighty handy. I use my sawzall with a pruning blade to cut limbs with when there is just not enough to break out the chain saw.
G
