So I got this TMax today. Wow this thing weighs a ton. The top and bottom caps are solid 1/8 inch metal plates. The outer shell covers a lot of metal inside. Add a 18650 and a 18350 and you are carrying around a shot-put. You can't use both batteries at the same time. The 18350 is like a reserve tank. The two bottom battery caps, one has a spring and the other a rubber insulator. On whichever battery you put the spring cap, that will be the one in use. The battery not in use rattles in the case. A small juice bottle can be stored instead of the 18350 battery. The switch also rattles. I have a couple Zmaxs and MVPs, thought this would be the best of two worlds, but it is way to big and heavy.

