Amazon wants $99 for just two batteries. The cells in the Bosch batteries I opened are the same Samsung INR 18650s that I found in much cheaper Ryobi and Craftsman batteries. My truck's lug nut are supposed to be tightened to 140 ft/lbs - a tad beyond Bosch's spec. My car is supposed to be 100 ft/lbs so the Bosch should handle it. I need to look up my boat trailer, but when a tire on that blew out a couple years ago it was a huge pain breaking those lug nuts free. Loosening all those lug nuts and tightening with a torque wrench is on my to-do list because I'm sure the tire shop doesn't take the time.