Ultralight 403 AC Kayak and Light Boat Motor

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SKU 1407-00

The Ultralight 403 AC name says it all – the lightest electric outboard motor on the market at 24.2 lbs including battery from Torqeedo, the leader in electric boat motors.  Designed specifically to propel kayaks with the new innovative angler mount and a 915 Wh battery.

The integrated on-board computer provides a GPS-based calculation of the remaining range. The Ultralight 403 AC doesn't limit your paddling performance but can – when called on – give you the right push: ideal when battling the current or wind OR you just need to give your arms a wee break.

Its variable mounting options means it can be used with many makes of kayaks, canoes, and other light boats.



  • The Ultralight 403 AC motor system includes a throttle/gear shift, new angler mount, ultra-quiet, efficient motor and a GPS housed with the 29.6V, 915 Wh lithium-manganese battery.
  • The GPS enables the throttle/gear shift to digitally display battery state of charge, remaining range, speed and current input power.
  • Capable of propelling a kayak, canoe, or other light boat for up to 24 hours on a single charge
  • 1-hp equivalent
  • With integrated 915 Wh high-performance lithium battery
  • Comes with charger, remote throttle, on-board computer, GPS-based range calculation and emergency magnetic stop key
  • Steering /tilting /auto-kickup – easy integration with your kayak's steering system
  • Extended navigation functions of the on-board computer with TorqTrac (optional accessory)
  • Untiring: up to 62 mile range
  • Completely waterproof (IP67)
  • Solar rechargeable – including during the voyage (optional accessories)
  • In the box - Motor unit with shaft, pylon, propeller and 1.90 m (75 in) connection cable, Accelerator lever with integrated display, Lithium ion battery with integrated GPS receiver, Magnetic kill switch, Bracket with trim mechanism, Motion link with quick clamp, Clamping ring, Control triangle, Swing arm, Pull cord (model 1103 AC only), USB adapter for battery, Power supply unit, including Euro power cable and US power cable, Accessories (installation kit), Operating manual, and Warranty form.





Best Use Kayaking, Fishing
Battery Size 915 Wh (31Ah) Li-Ion 

Battery Recharge Time

(completely discharged battery)

10.5 hours

Running Time


Slow 24:00, Half-throttle 11:50, Full-throttle 02:20



Slow 2.6, Half-throttle 3.7, Full-throttle 5.8

Comparable gas outboards

(propulsive power)

1 hp

Comparable gas outboards


2 hp
Shaft Length 17.7 inches

Standard propeller

(v = speed in km/h at p = power in watts)

Total Weight 24.2 lbs

Motor Weight

(without battery)

9.7 lbs
Battery Weight 13.9 lbs
Warranty 2 year manufacturer's limited warranty for non-commercial use
Shipping Weight 30 lbs


* Depends on type of boat, load, propeller and conditions. Speed and range indications do not represent a legal guarantee.



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