Buy The Type Of Vacs Used In The How To
It is getting hard to find a place to buy a surplus Lentek" robotic vac. You may buy them here. While the vac is great for parts for making robots; the vac is badly designed to use as a vac.
Will ship only to the 48 states in the U.S.
Buy TWO vac for $99 + $39.00 S/H = Total $138
Each vac comes with a 14.4 volt rechargeable battery pack (as seen in the photo), power transformer 24 volts 500ma and a remote controller.