TDD3500 Electric Trailer Dolly
519 in stock
Park small campers and utility trailers with Trailer Dolly Depot’s TDD3500 electric trailer mover. Suitable for ball-mounted trailers up to 3,500 lbs Gross Weight and 350 lbs Tongue Weight. With a variable speed thumb throttle, move up to 1.5 mph in either forward or reverse to park with confidence and efficiency.
A special ball mount adapter provides a secure connection to prevent tipping while connected to your trailer. Interchangeable hitch balls come in 1 ⅞” and 2” diameters, compatible with most small trailers. The dolly includes two pre-installed rechargeable 12V lead acid batteries, boasting 9Ah of use.
Maneuvering the dolly is easy with the 13-inch drive tires, offering grip on multiple surfaces, including concrete, asphalt, and packed dirt. The rear caster wheel provides 360-degree swivel and additional stability, while the foot bar offers more leverage.
The frame is a single, solid piece made from heavy-duty, heat-treated steel. The sturdy square tubing is then powder coated for a sleek and durable finish that will hold up to use and weather exposure.
Features
Solid steel construction
Single piece of powder-coated steel.
Variable-speed motor
800 watt brushless motor with adjustable speed up to 1.5 mph via control lever.
Battery status display
Shows battery level while in operation. Button controls power to handle accessories.
Directional switch
Switch that controls operational direction.
Overload protection
Automatically shuts down when overloaded.
12V sealed lead acid batteries
Pre-installed rechargeable batteries with 9Ah.
13-inch drive tires
Provide grip on multiple surfaces including concrete, asphalt, and packed dirt.
8-inch third wheel
Rear caster wheel with 360 degree swivel.
Foot bar
Get extra leverage for moving and steering.
Secure ball mount connection
Tightens to the coupler for a stable and secure hold.
Technical specifications
Capacity: 3,500 lbs GVWR, 350 lbs tongue weight
Power supply: Two 12V Sealed Lead Acid Batteries, 9Ahr
Hitch ball: 2”, 1 7/8”
Assembled weight: 96 lbs
Assembled dimensions: 48” L x 24” W x 36” H
Product number: 628068124010
Storage & Maintenance
- Keep the tire pressure at 30 PSI.
- Lights on the speed controller indicate battery level. These will only illuminate during operation.
- Keep the dolly in a cool, dry place, where it is protected from the elements (such as a garage).
Safe, Reliable Parking

3500 lbs
Gross Trailer Weight (GVWR)

350 lbs
Tongue Weight

0-1.5 mph
Variable Speed

6%
Max. Incline
Will it work for me?
Trailer Weight Limits
The TDD3500 Electric Trailer Dolly confidently and safely moves trailers up to 3,500lbs GVWR and/or trailers with up to 350lbs of tongue weight. If your trailer is within that range, you are good!
Surface & Incline Limits
Move trailers on firm, compact gravel, dirt, asphalt or pavement. Loose surfaces will cause the dolly to lose traction.
Does not exceed inclines greater than a 6% grade
Hitch Coupler Compatibility
Connect the TDD3500 to any standard 2-inch or 1-7/8 inch ball coupler. Larger ball sizes, and other hitch types (pintle, atwood, spring-loaded, etc.) are not supported

Whats in the box?
Parts
1. Handlebar with grips
2. Handle connecting rod
3. Frame with hardware pre-installed
4. Battery box with pre-installed batteries
5. Battery charger & cord
6. 8” caster wheel
7. Two 13” drive tires
8. Three round frame shaft plugs
Hitch Adapter
9. Ball mount (20” connection height)
10. Hitch ball (2”, 1 7/8”)
11. Step-down friction plate
12. Spanner wrench
Tools
13. Two assembly wrenches