Makita BDF451 18-Volt LXT Lithium-Ion Cordless 1/2-Inch Driver ...
It actually talks to the batteries it charges throughout the cycle, using a built-in memory chip in the battery and, believe it or not, a CPU chip in the charger itself, which analyzes the data stored in the battery chip to decide on the best... It's got a super speed range of 0 to 300 rpm in low gear, 0 to 600 in mid-range and 0 to 1,700 rpm in top gear. The lithium-ion technology means 1,400 battery life cycles, longer run time, lighter weight, a great reduction in the self-discharge rate and built-in shock-absorbing features to protect your battery. Science has ushered battery technology along, and the LXT lithium-ion system that powers this impact driver has a ton of advantages over standard NiMH or NiCad batteries. Drill/driver, two LXT lithium-ion 3. But perhaps the coolest innovation is what Makita calls its 45-minute optimum charger. Makita's always made ergonomically positive tools that feel good in your hand and take the strain off your body, and this one's no exception. 0Ah batteries, 45-minute optimum charger, screwdriver bits, carrying case. The drill/driver itself is fairly compact and lightweight, weighing in at less than 5 pounds, yet it's packing a powerful 560 in. /lbs.