Hiboy S2 Pro Electric Scooter

Hiboy rates the motor at 500 W with 600 W peak, against 350 W (500 W peak) on the S2. The two modes match the S2: Drive tops out at about 13 mph and Sport at 19 mph, and the Hiboy app adds a lock, light control, cruise control and speed settings. Its 19 mph top speed fits New York's e-scooter definition (VTL §114-e: no more than 20 mph and under 100 lb) and is above California's 15 mph limit (Vehicle Code §22411), so California riders must keep it at 15 mph or below; Drive mode does that. Scooters are not e-bikes, so the US e-bike classes do not apply. California also requires a driver's license or instruction permit (§21235) and a helmet under 18. New Jersey's legal e-scooter must be under 19 mph (and 750 W or less), so at 19 mph the S2 Pro falls outside that category; New Jersey treats it as a motorized scooter that cannot be registered, which limits it to private property there. Pennsylvania does not allow e-scooters on public roads at all.

Hiboy claims 25 miles and publishes the same test conditions as for the S2: a 165 lb load at a steady 11.4 mph on flat ground at 77°F with no wind. We estimate range by dividing battery capacity by 22 to 27 watt-hours per mile, a band taken from published full-speed tests and adjusted to a 175 to 180 lb rider. For the S2 Pro's 417.6 Wh, that is about 15 to 19 miles a charge at full speed, against 10 to 13 for the S2. In those tests, scooters covered a median 59% of their advertised range, which would put the S2 Pro near 15 miles. Slower riding in Drive mode should add some. This is an estimate from the spec sheet; we have not ridden the S2 Pro. Charging takes 6 to 7 hours on the 42 V, 2 A charger per the manual; the product page says 4 to 6 hours and the Amazon listing says 8, so plan on charging overnight.

Both wheels are 10-inch honeycomb tires, solid and airless, so they cannot puncture. A larger wheel generally rolls over cracks more easily than the S2's 8.5-inch one, though solid tires still pass more vibration than air-filled ones; two rear spring shocks help. Stopping is a rear disc brake plus an electronic regenerative brake, and the rating is IPX4, splash resistance only. The climb figure is the oddest gap: Hiboy's product page and FAQ say 15°, the manual says about 17%, and Hiboy's Amazon table says 15%. A 15° slope is about a 27% grade, so the units matter; we use the manual's 17%. Weight is 39.7 lb by the manual, the load limit is 220 lb, and it folds to 44.7 x 16.7 x 20.1 in (the product page says 45.3 x 16.5 x 19.3 in). The warranty is one year; the Amazon listing says some parts get six months.

Hiboy publishes the paperwork. The UL badge beside the price on its S2 Pro product page links UL LLC certificates of compliance: UL 2272 certificate UL-US-2424320-0 (report reference E535405-20240618) for the scooter's electrical system, and UL 2271 certificate UL-US-2423198-0 for the battery pack. We could not check the numbers in UL's own directory, which needs a login, so we report them as Hiboy's published documents. The two Amazon listings name different labs (UL on one, SGS on the other); the certificates are UL's. That matters in New York City, where Local Law 39 has required UL 2272 for e-scooters sold there since September 16, 2023, and in California, where SB 1271 has required UL 2272 battery testing for motorized scooters sold there since January 1, 2026. No CPSC recall found for the Hiboy S2 Pro as of October 2026.

Four scooters worth weighing against the S2 Pro:

• Hiboy KS4 Pro ($399.98 as of Oct 22, 11:10 AM EDT, subject to change): the same scooter underneath. Hiboy sells one motor wheel, one replacement battery and one charger for both; the KS4 Pro adds 18.9-inch handlebars (against 16.5), and weighs 40.6 lb. Hiboy sells one replacement battery for both and publishes UL 2272 and UL 2271 certificates for each. Buy whichever is cheaper; our KS4 Pro vs S2 Pro comparison goes line by line.
• Segway Max G2 ($699.99 as of Oct 22, 11:10 AM EDT, subject to change): the bigger, heavier step up. Segway lists 450 W rated (1,000 W peak), a 551 Wh battery (we estimate 20 to 25 miles), self-sealing 10-inch tubeless tires, front and rear suspension, IPX5 and a 265 lb limit. It weighs 53.5 lb, nearly 14 lb more than the S2 Pro. It is a different model from the Max G30P and G30LP that Segway recalled in March 2025.
• MAXSHOT V1 SPRO ($265.99 as of Oct 22, 11:10 AM EDT, subject to change): the cheaper way to 10-inch honeycomb tires, with shocks front and rear and a 500 W motor. Its battery is smaller, about 378 Wh (an estimated 14 to 17 miles), it states no water rating, and it reaches 22 mph, over New York's 20 mph line.
• NAVEE GT3 ($449.99 as of Oct 22, 11:10 AM EDT, subject to change, against $422.95 (as of Oct 22, 11:10 AM EDT, subject to change) for the S2 Pro): the softer ride on paper, with 10-inch tubeless air tires, front and rear suspension and IPX5. In exchange it has a smaller 358 Wh battery (we estimate 13 to 16 miles), a 243 lb limit, 46.3 lb of weight and an 8-hour charge.

Buy the S2 Pro if your round trip is up to about 15 miles, your route has moderate hills, you weigh under 220 lb with your bag, and you want tires that never go flat. Skip it if you carry the scooter up stairs every day (39.7 lb by Hiboy's manual), ride in regular rain (IPX4), or weigh more than 220 lb; the Segway Max G2 above is rated for 265 lb. Skip it too if your trips are short: the Hiboy S2 ($299.98 as of Oct 22, 11:10 AM EDT, subject to change) has the same top speed and brakes in a 35.5 lb package, with an estimated 10 to 13 miles.