Review on Upgrade Your Craftsman Tools: Enegitech 19.2V 4.0Ah C3 High Capacity Lithium Ion Battery Replacement (2-Pack) by Born Waheed

I have a large collection of Craftsman cordless tools and have used NiCad and Nickel Metal Hydride (NiMH) batteries and still do. I recently had to replace my well used and burnt out 5 1/2" circular saw and upgraded to the 6" Craftsman. I got a small Lithium Ion battery with a charger at the same time. I got this 4 amp battery because I have learned that higher amperage batteries are critical to having the circular saw do the kind of cutting that I want to do. It is the most powerful battery in my collection and allows the saw to run better and longer and be more useful. It does this better than the older technologies because it does not lose power after charging which is important because typically I use the tools a lot at once and then maybe not again for several weeks. Having the charge level indicators is helpful in planning the work even though I have spare batteries.