Addmotor Grandtan M-340 Fat Tire Electric Trike
- Class 2
- 801-1,000 Wh
- Over 80 mi claimed
- Over 400 lb max load
SVT Score, Mid
A 960 Wh upright fat-tire trike with 90 Nm of torque, three disc brakes and front and rear baskets, heavy at about 123 lb.
$2,199
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Usability
5.9 out of 10- Peak: 1,400 W stated, not scored
- Conflict: spec table 110 lb, question board about 123 lb
- Searched: UL Certipedia Intertek SGS TÜV SÜD CPSC Health Canada
- Record: UL Product iQ, ANSI/CAN/UL 2849 (QGNS, Electrical Systems for E-Bikes; QGNS7 for Canada), GRANDTAN, ADDMOTOR TECH
- Option: Grandtan Plus version $2,299.00
Strengths
- Long range from the large battery
- Strong torque for hills with a rider and cargo
- Front and rear baskets come fitted
- Parking brake holds the trike on a slope
- Battery locks in and lifts out to charge indoors
Drawbacks
- Very heavy to move by hand
- Mechanical brakes rather than hydraulic
- No turn signals on the spec list
- Store weight is stated two ways
- Battery and parts warranty terms differ between policy pages
A strong, long-range trike for errands, but heavy and slow to stop
Specs
- TypeTrike
- E-Bike ClassClass 2
- Battery801-1,000 Wh
- MotorHub
- Top SpeedUp to 20 mph
- Claimed RangeOver 80 mi
- WeightOver 85 lb
- Max Rider LoadOver 400 lb
- BrakesMechanical disc
- SuspensionFront
- FoldingDoes not fold
- CertificationsUL 2849 listed
- Warranty2 Years
Not checked: The brake rotor size and throttle speed, not printed
At a glance
- Kenda 4.0 in fat tires
- Plus version for taller riders
- 5-inch LCD
The ADDMOTOR US trademark (registration 5226479) is registered to an individual, Chen Qiang, at an address in Guangzhou, China.
- Addmotor e-bikes and e-trikes are sold in the US by Addmotor Tech Inc. of El Monte, California, the company named on the warranty page and in the Terms of Purchase.
- Addmotor sells through its own store at addmotor.com, which ships from a warehouse in El Monte with free delivery to the 48 contiguous states and none to New York City.
- Its Amazon US listings are sold by a seller named Addmotor CO.,LTD.
- Its store sells mostly upright, passenger, tilting and family three-wheelers, with cargo, folding, fat-tire and moped-style two-wheelers alongside.
- Among major US retailers, only Walmart sells Addmotor e-bikes and e-trikes, through the brand's own marketplace store (ADD&MF&Z E-Bike), and none of those listings has ten reviews yet (October 2026).
The Addmotor Grandtan M-340 is an upright fat-tire electric trike with a 48 V, 20 Ah Samsung-cell battery (48 V x 20 Ah = 960 Wh) and a 750 W rear hub motor with 90 Nm of torque on Addmotor's blog table and a 1,400 W peak.
It has mechanical disc brakes on all three wheels plus a parking brake, an 80 mm oil-spring fork, a torque sensor, a half-twist throttle and 4.0 in Kenda fat tires (24 in front, 20 in rear on the Standard).
Addmotor's table gives 110 lb and its question board about 123 lb, and the total payload is 450 lb (350 lb rider plus 100 lb in the rear basket). The maker states up to 85 miles on assist level 1 and 20 mph, and the trike ships with front and rear baskets, a 5-inch LCD and a key-locked removable battery.
The Plus version on the same listing has 26 in and 24 in wheels for taller riders at $2,299.00.
Questions answered from our data
How much does an electric bike cost?The 245 electric bikes we list run from $799 to $12,500, with a median of $1,995.
Are electric bikes UL certified?88 of the 245 electric bikes we list carry a UL 2849 listing we could look up by model.
How far can an electric bike go?209 of the 245 electric bikes we list claim 41 miles or more on a charge, each on its maker's own basis.
Which electric bikes have a battery over 1,000 Wh?14 of the 245 electric bikes we list have a battery over 1,000 Wh, as their makers rate it.
