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Those battery housings are pretty small. That, and the 2KW motor, make me worry about range. (They say 6mi, but it's trivially easy to lie about range) The kickstarter page doesn't mention capacity, so let's do some wild ass guessing.

  It’s boards are just 12-15 pounds, only twice as heavy as the 
  lightweight, top-of-the-line 7 pound Loaded boards they build their 
  electric motors into.
12-7=5lbs of equipment. Assume the motors, drivetrain, and casings take up 3lbs, that's 2lbs for batteries. Assume 200Wh/kg Li-on batteries, which work out to 90.6Wh/lbs, for a total system capacity of 181.2 watt-hours.

The watt-hour is a simple unit. A 1 watt-hour battery can run 1 watt of load for 1 hour, or a 6 watt load for 10 minutes, or a .5 watt load for 2 hours.

A 181.2 watt-hour battery will be discharged after running:

  A 2000 watt load for 5.436 minutes.
  A 1000 watt load for 10.872 minutes.
  A  500 watt load for 21.744 minutes.
  A  250 watt load for 43.488 minutes.
  A  100 watt load for 108.72 minutes.
The worst case scenario is even worse than you'd think, since electrochemical batteries don't have a flat discharge curve: the harder you discharge them, the less capacity you have.

Boosted advertises their 2000 watt motors in bold print, but if you actually ran them that hard for any length of time, you'd discharge the battery.



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