The BURNDY PATRIOT PAT750-LI Lithium-Ion tool is approximately 25% faster than the previous models. Crimps copper #8-750 MCM. The advantages of the new 18-volt 3.0 Ah lithium-ion technology over Ni-Cd and Ni-MH: No memory effects, No self discharge, No conditioning required, Longer life, 2.5 times more charge/discharge cycles than traditional 18-volt Ni-Cd batteries and provides 430% more lifetime work, Fastest charge time only 30 minutes, twice as fast as Ni-Cd, Light weight, 40% less than Ni-MH batteries, Over-molded handles for comfort and improved grip