Technical Specifications

Frame Finish

  • 3 pieces (Main Body, 2x Bottom Feet)
  • 6061 Aluminum Alloy
  • Black Semigloss Powdercoating



Hill Climbing

30% Grade

Top Speed

12.5mph (20kph)

Weight Limit

325lbs. (145 kg.)


  • up to 10 miles (16 km)


  • Variable Speed Control
  • Turn AssistTM
  • Push BackTM
  • Smart SenseTM


Do not attempt to travel down long steep inclines on a 100% fully charged battery. Failure to comply may result in damage to the battery or to the circuit board due to the regenerative braking.

  • Electronic Motor Brake
  • Regenerative Braking


Riding Mode Compact Mode Storage Mode
Height 28 inches (711.2 mm) 28 inches (711.2 mm) 22.5 in (571 mm)
Width 13.9 in. (354 mm) 7.5 in. (192 mm) 7.5 in. (192 mm)
Depth 18 in. (457.2 mm) 18 in. (457.2 mm) 16 in. (406.4mm) (deflated tire)


  •  27lbs (12.2 kg.)


  • Self-Balance is only in one axis (the forward and backward axis)
  • Left / Right balance is maintained by the user. Estimated 20-30 minutes learn time.
  • Noob Wheels (optional) to ensure easy balance for beginners.
  • 1,000 balance-calculations per second ensures rapid feedback and balance correction in unpredictable environments.


ON/OFF Button With Status LED

Two position, press “in” to activate SBU.

Power Override Key Lock

Once locked, the SBU cannot be turned on.

Charger Port

Use only Focus Designs supplied charger to recharge battery.


  • Split-pack + Battery Management System (16-cell total)
  • 53V / 2.5Ah / 122Wh (each 1/2pack is 61Wh) / 16g ELC
  • Lithium iron phosphate (LiFePO4)
  • Rechargeable via provided charger.
  • City ride time: 2 hours
  • Nonstop sprint time: 1 hour
  • Battery shelf time: 3 months


  • Output: 58.4V, 2A
  • Input: 100-240V, 50-60Hz, International
  • Connector: US cord provided


  • 3-axis gyro
  • 3-axis accelerometer

LED Modes

  • Normal Operation
  • Battery Low
  • Battery Dead
  • Factory Code


Standard Seat Post
  • 200mm and 300mm
  • Fits 26″ inseam and above!

Airplane Travel

  • Power-override key lock for aircraft travel ensures no accidental turn-ons in flight.
  • Battery contains 16g ELC (safe for travel)
  • Carry-on as “Ala Carte” or stow in the overhead compartment. Note that this may require removal of the seat and possibly deflating the tire (depending on airline).


TSA Note

We view the SBU as a personal mobility device, helping you get from point “A” to point “B”. While we have ridden inside many US airport terminals and have been greeted with approval (and even clapping) by the TSA agents and other passengers walking to their gate, this may not be the case every time or the official policy. Please ride respectfully and safely to ensure a culture of responsible SBUers.


  • Operating temperature: 32° to 113° F (0° to 45° C)
  • Relative humidity: 5% to 95% noncondensing