Amazon.com Product Description: Keep your DEWALT 18-volt cordless tools powered with the DC9096 XRP 18-volt extended run-time batteries. DEWALT uses top quality NiCd cells, offering a consistent and adaptable performance. The extended run-time batteries deliver 40 percent more run time with new cobalt technology.
My original batteries were starting to get tired lasting only a minutes or two so it was time to replace them. I found these on Amazon for a good price. I have not been a big user of my power tools lately but I have used it in my saw and drill for about 15-20 minutes run time and it is strong as when I first charged it. I would definitely recommend it and plan to buy a second one soon.