- Weight as low as 11.0 kg complete with battery
- 1 HP equivalent
- With 915 Wh high-performance lithium battery
- Comes including charger, throttle, onboard computer, GPS-based range calculation and emergency magnetic kill switch
- New angler mount with tilt and park mechanism, plus simple integration with the kayak’s steering unit.
- Easy to mount on fishing kayaks
- Range of up to 100 km
- Item number: 1407-00 | EAN: 4260113695531
- Equipment included: Ultralight 403 AC with battery, charger, remote throttle, on-board computer, GPS-based range calculation and emergency magnetic stop key
- Warranty: 2 years for non-commercial use (12 or 24 months warranty extension available - click here)
We currently deliver to the following countries
- California residents please click here for Prop 65 warning
Products for Ultralight 403 AC
Ultralight 403 AC
Torqeedo’s lightest outboard, the Ultralight 403 AC, gets you to your favorite spot faster, and lets you stay there longer. It offers reliable performance, an innovative new angler mount and all the high-tech features of a genuine Torqeedo system: GPS built-in, real-time range and runtime display, solar charging and the latest lithium battery technology.
Our extremely light Ultralight 403 AC fits on all popular types of kayak and canoes, and there are special models for special requirements.
Ultralight 403 AC – Benefits:
- Weight including battery: 11.0 kg
- Range of up to 100 km
- Easy to mount on fishing kayaks
- Completely waterproof (IP67)
- Superb usability with a wealth of smart features
Steering / tilting / auto-kickupOptimised propeller designHigh-performance lithium battery
with integrated GPSNew mount with tilt and park mechanism – simple integration with the kayaks steering unitDisplay on the throttle – provides information on: battery charge status, remaining range, speed over ground, input powerMaximum-efficiency propulsion
for premium performance and rangeExtended navigation functions
with TorqTrac (not included)
Ultralight 403 AC with Integrated Battery (915 WH / 29.6 V / 31 Ah)
Speed in km/h* Range in km* Running time in hours Slow 4.2 101.0 24:00 Half throttle 6.0 71.0 11:50 Full throttle 9.3 21.7 02:20
* Dependent on factors such as type of boat, load, propeller and ambient conditions. Figures for speed and range are indicative only and are not a guarantee of performance.
Example: Fishing kayak Hobie Mirage Revolution (4.1 m / 26.3 kg)
Information on range and speed
For a displacement boat making way through the water, the required propulsive power increases in proportion to the cube of the speed. This means that if you want to double your speed, you need eight times as much power.
And vice-versa, a small reduction in speed is enough to increase the achievable range substantially.
The Torqeedo Ultralight's on-board computer calculates the remaining range constantly, by linking the motor's consumption data with the charging level of the batteries, and the speed over the ground from the GPS. This allows you to read the remaining range in real time from the motor display or the smartphone app TorqTrac.
Technical Data Ultralight
Ultralight 403 AC Input power in watts 400 Propulsive power in watts 180 Comparable petrol outboards (propulsive power) 1 HP Comparable petrol outboards (thrust) 2 HP Maximum overall efficiency in % 45 Static thrust in lbs* 33 Integrated battery 915 Wh Li-Ion Nominal voltage 29.6 Final charging voltage 33.6 Total weight in kg 11.0 Motor weight without battery in kg 5.0 Weight of integrated battery 6.0 Shaft length in cm 48 Standard propeller
(v = speed in km/h at p = power in watts)
v10/p350 Alternative propeller options - Propeller Guide Maximum propeller speed in rpm 1,200 Control Throttle TorqLink No Steering Connects to kayak steering, lockable Tilting device Manual, with impact protection Trim device Manual, 4-step Stepless forward/reverse drive Yes Integrated on-board computer Yes* Torqeedo static thrust measurement is based on internationally accepted ISO standards. Static thrust figures for conventional trolling motors are typically measured differently, which results in higher values. To compare Torqeedo static thrust data with conventional trolling motors, add approximately 50% to the Torqeedo static thrust values.
Technical information according to COMMISSION REGULATION (EU) 2019/1782:
Technical information: Power Supply EDAC EA11012E-240 Input Voltage 100 - 240 VAC Input Frequency 50 - 60 Hz Output Voltage 24 VDC Output Current 4,16 A Output Power 100 W Average operational efficiency ≥ 89 % at 25 %, 50 %, 75 %, 100 % output power Efficiency at light loads (10 %) ≥ 79 % No Load Power consumption ≤ 0,15 Wat at 0 % output power
Ultralight 403 AC Operating InstructionsUltralight 403 AC Operating Instructions – German / English
Ultralight 403 AC Operating Instructions – French / Dutch
Ultralight 403 AC Operating Instructions – Italian / Spanish
Ultralight 403 AC Operating Instructions – Swedish / Finnish
Ultralight 403 AC Operating Instructions – Danish / Portugues
Ultralight Solar ChargerSolar Panel 50W/ Charger 50W Operating Instructions – German / English
Solar Panel 45W/ Charger 45W Operating Instructions – German / English
Solar Panel 45W/ Charger 45W Operating Instructions – French / Dutch
Solar Panel 45W/ Charger 45W Operating Instructions – Italian / Spanish
Solar Panel 45W/ Charger 45W Operating Instructions – Swedish / Finnish
Declaration of Conformity
Video Ultralight 403 C
Torqeedo Ultralight 403 CLearn about the benefits of our lightest motor, the Ultralight 403 C, for yourself.
Your information material – Everything at a glance.
You will find all important information about the Ultralight in our digital brochure. Download the PDF quickly and easily or read it conveniently online while protecting the environment.
Ultralight 403 AC FAQ
What power does the integrated battery deliver?
The battery has a capacity of 915 Wh, i.e. 31 Ah at 29.6 V.
How long does it take to recharge the battery?
When the battery is completely discharged it takes approx. 10,5 hours to fully recharge it.
With the solar charger 50 W (accessory) you can charge anytime, during travel and while the sun is out.
What useful life can I expect the lithium batteries to have?
The life expectancy of lithium batteries in recreational use is, more or less, independent of charging cycles.
There is no memory effect either, i.e. you can fully charge them after each trip irrespective of the charge status shown in the display.
Generally speaking, a capacity loss of approx. 4 % per year is to be expected. Capacity loss will, however, accelerate if the battery is permanently exposed to heat. Also storing the battery always fully charged will accelerate ageing.
There are no concerns about using the battery in high temperatures, we recommend that you take the battery out of the sun and store it in a cool place after use.
Your battery must be returned to a Torqeedo Service Centre for service 8 years after the date of manufacture.
Can the Ultralight 403 AC be connected to the steering?
Yes, the Ultralight 403 AC can be connected to your kayak's steering system. Please refer to your kayak's instructions and our information on mounting.
What happens if I capsize?
If the kayak capsizes, the motor stops automatically to prevent injury – provided the magnetic kill switch is attached to your wrist or life jacket.
The motor only runs when the magnetic kill switch is placed in the prescribed position on the remote throttle.
Should you fall overboard, the magnetic kill switch will go with you and the motor will stop immediately.
What is the warranty on the Ultralight 403 AC?
The Ultralight 403 AC has a 2-year warranty from the date of purchase for non-commercial use.
What mounting options are available?
Use with Hobie kayaks: We recommend the Hobie "evolve" product (available from Hobie dealers).
Use with Grabner kayaks: Please use the Grabner mounting kit.
Use with Prijon kayaks: Please use the Prijon rudder mounting.
Poucher-Faltboote: Please use the motor mount developed by Poucher.
All others: The ultralight 403 AC can be mounted on just about any kayak using the angler mount provided.