3S 4000 mah 45C Turnigy Nano Tech:
164mm X 62mm X 23mm 375 gr.
3S 4000 mah 40C Turnigy
150mm X 50mm X 22mm 372 gr.
Those Nano Techs are large next to a comparable ordinary lipo. But the weight is basically the same. That's according to HC specs of course
