
HappyRun Tank G100: Everything You Need to Know
The spec page prints up to 36 mph, 85 miles, a 2000W peak, and a 2A charger. The product table prints Class 5 at 28 mph and a 42V 3A charger. Seat lines are 32 in and 35 in. Electrek tested 34.
By SickEBike desk
The short answer
The HappyRun Tank G100 has pedals and two 48-volt packs, not a Class 1–3 e-bike. The spec page prints up to 36 mph, up to 85 miles, a 2000W peak, a 2A charger, 107 lb, and a 32-inch seat. The product table prints 1000W rated, Class 5 at 28 mph off-road, a 42V 3A charger, and a 35-inch seat. Electrek tested 34 mph. Forbes put assist near 30.
The HappyRun Tank G100 is a motorcycle-shaped bike with pedals, two 48-volt packs, and a throttle, not a Class 1, 2, or 3 e-bike. The specifications page prints speeds 1 to 5 up to 36 mph, range up to 85 miles, a 2000W peak, a 2A charger in 7 to 8 hours, 107 lb, a 32-inch seat, and a 400 lb payload. It does not print a rated watt figure or a class numeral. The product table prints a 1000W rated motor and a 2000W peak, 95 Nm, and a class map: Class 1/2 at 13 mph, Class 3/4 at 25 mph, Class 5 at 28 mph with extra plus signs and the words off-road mode. That table’s range cell is 85-plus miles. Its charger cell is 42V 3A and 6 to 8 hours. Its seat cell is 35 inches. Electrek’s July 4, 2024 test topped out at 34 mph and said the claim was 38. Forbes, in May 2024, put pedal-assist near 30 mph and the weight at 105 lb, at an MSRP of $1,699. Do not average them. The list’s ~$2,199 is not those tags. A product tile showed $1,598 from $2,898. The row links here.

Two HappyRun pages, and two magazine rides
happyrunsports.com specifications page, the product table, Forbes (May 15, 2024), and Electrek (July 4, 2024). A shop card copied the spec table and then wrote a different speed in the bullets.
| What is printed | |
|---|---|
| Motor | Spec page: peak 2000W, no rated figure, no torque. Product table: 1000W rated, 2000W peak, 95 Nm. Forbes: a 1,000-watt hub that can jump to 2,000, nearly 100 Nm. Electrek: 1,000W continuous, 2,000W peak, 95 Nm. |
| Battery | Both HappyRun pages: 48V 20Ah on top and 48V 18Ah below. Forty-eight times 20 is 960. Forty-eight times 18 is 864. The sum is 1,824. The spec page does not print watt-hours. Electrek wrote 1.8 kWh. Forbes described an 18 Ah pack under the rail and a 20 Ah pack in the tank. |
| Speed | Spec page: up to 36 mph. Product map: 13, then 25, then 28 mph with plus signs, called off-road mode. Product blurb: 28-plus mph off-road, and street-legal without license plates. Electrek: claim of 38 mph, tested 34, and it arrived in off-road mode. Forbes: pedal-assist about 30, and an off-road mode above 30. A shop bullet says 38-plus beside a copied table that still says 36. |
| Range | Spec page: up to 85 miles. Product table: 85-plus. A Japanese reprint of an older sheet: 130 miles with pedal assist and 70 miles electric. Forbes: over 130 miles claimed. Electrek: claimed up to 130. Do not merge 85 and 130. |
| Charger | Spec page: 2A, 7 to 8 hours, no volts. Product table: 42V 3A, 6 to 8 hours, on a 48-volt pack. Do not average 2A and 3A. Do not invent a third voltage. |
| Chassis | Spec page: 107 lb, seat 32 in, rider 5'3" to 6'5", 20-by-4 road tires, hydraulic brakes, 160 mm rotors, carbon-steel frame, IP54, 7-speed, rear rack 33 lb. Product table: net 107 lb, gross 110 lb, seat 35 in (88 cm), 45# steel, 95 Nm, climb 30 degrees. 88 cm is about 34.6 inches, so the 35-inch line matches the centimeters. The 32-inch line does not. |
| Price | No price on that sheet. Product tile: $1,598 from $2,898. Forbes: $1,699 MSRP. A shop card: $1,899 from $2,399. The list’s ~$2,199 is not those four. |
Class 4 and Class 5 are not US bicycle classes. Where a state uses the three boxes, Class 1 is pedal-assist to 20, Class 2 adds a throttle to 20, and Class 3 is pedal-assist to 28, on a motor under 750 watts. This table’s Class 1/2 cell is 13 mph. Its Class 3/4 cell is 25. The blurb says you can stay street-legal without a plate. Electrek said the bike shows up already in the fast mode. Quote both. Pedals are on the bike. Two thousand watts are also on the bike.
A 42-volt charger line on a 48-volt pack is what that table prints. A Class 5 cell is not a statute. Neither number becomes the other by averaging.
Not a dirt bike, and not Class 2
This is not a Sur-Ron and not a Qiolor Tiger. Those are other carts. The class chart stops at three classes. The watt-hour page is why 1,824 is the sum, and why Electrek’s 1.8 kWh is a rounded sentence, not a second pack. Forbes weighed it at 105 lb on a ride. The pages print 107. Electrek also prints 107. Do not publish 106.
Who it is for
Buy it if you want the moped look, a crank, and two packs you can pull, and you will read the class map before the street-legal sentence. The 2000W peak and the dual 48-volt packs agree across the HappyRun pages this desk read. The top speed, the seat, the charger, and the range do not.
Skip it if you need one top speed, one seat height, or a charger voltage that matches 48 volts. Eighty-five miles on 1,824 watt-hours is about 21 watt-hours a mile. One hundred thirty miles on that sum is about 14. Both are claims. Electrek’s tested 34 mph is a ride, not a new spec cell, and it is not 36 or 38.
Questions people ask
What is the pack, in watt-hours?+
The pages print 48V 20Ah on top and 48V 18Ah below. Forty-eight times 20 is 960. Forty-eight times 18 is 864. The sum is 1,824. The spec page does not print watt-hours. Electrek wrote 1.8 kWh. Do not publish 1,800 as the labeled figure.
Why are there two chargers?+
The spec page prints a 2A charger and 7 to 8 hours, and does not print volts. The product table prints 42V at 3A and 6 to 8 hours, for a 48-volt pack. Do not average 2A and 3A, and do not invent a third voltage.
Is Class 5 a US bicycle class?+
No. Where states use the three classes, pedal-assist stops at 20 or 28, and a throttle bicycle stops at 20, under 750 watts. This table’s Class 1/2 cell is 13 mph. Its Class 3/4 cell is 25. Class 4 and Class 5 are not those statutes. The blurb says street-legal without a plate. Electrek said it arrives in off-road mode.
Which price matches the list?+
Not the list’s roughly $2,199. A product tile showed $1,598 from $2,898. Forbes, May 2024, printed an MSRP of $1,699 and a weighed 105 lb. A shop card showed $1,899 from $2,399 and a bullet of 38-plus next to a copied table that still says 36.
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