Heybike Ranger

The 750 W rated rear-hub motor (1400 W peak, 80 Nm torque) is the same Heybike motor spec listed on the Mars 3.0 and Ranger S. Heybike lists a 28 mph Class 3 cap in Class 3 mode. We have not ridden it, so we cannot tell you how it climbs loaded.

Cadence sensor (not torque), the same Heybike-line trade-off. Power is on/off based on whether the cranks are turning, not how hard. For a relaxed step-through commuter cruising 15-20 mph on flat city streets (the use case this bike is designed for), cadence sensing is workable. If torque-sensor pedal assist matters to you, the Heybike Mars 3.0 ($1,199 at our last check) is the in-brand alternative with a torque sensor and full Horst-link rear suspension.

Class config: ships as Class 2 (20 mph throttle + PAS) by default. Class 3 (28 mph PAS, 20 mph throttle) is a one-tap toggle in the LCD. Class 1 (PAS only) also one-tap. The class switch matters because the 3-class framework is the model 38 US states (and a growing list of municipalities) use to regulate where each class is allowed. Many bike paths and shared-use trails restrict to Class 1 or Class 2, and Class 3 access is increasingly tied to bike lanes only.

The pack is a 48 V / 12.5 Ah / 600 Wh removable lithium-ion in the down tube. Heybike's claim is 45 miles at PAS 1; our planning estimate, not a measurement, is 25-35 miles at PAS 3 with mixed urban riding and around 18-25 miles throttle-only on flat ground, depending on rider weight.

For comparison: the Ranger S's 692 Wh battery works out at about 30-40 mi at PAS 3 by the same estimate, roughly 5 mi more. For commuters under 10 miles each way the base Ranger's range is plenty; for 15+ mi daily commutes the Ranger S's bigger pack starts to matter.

The pack drops out of the down tube via key lock for off-bike charging, which is apartment-friendly. Charge time is approximately 3 hours on the included 4 A charger (faster than the larger Ranger S because of the smaller capacity).

UL2849 system + UL2271 battery certifications listed on the Amazon page. Meets the certification requirement for e-bike sales under NYC Local Law 39 of 2023 (passed after the 2022-2023 NYC e-bike fire incidents) and what apartment buildings that ask for UL 2849 or equivalent before indoor charging want to see. For long-term battery health, Li-ion packs of this format typically retain ~80% capacity after 500-800 full charge cycles per Battery University BU-808. For a 10 mi each-way commuter, that's 5-7 years before noticeable range loss.

Frame: 6061 aluminum step-through with low standover (about 17 in at center). The fold is single-pivot mid-frame. Folded dimensions: 40 × 20 × 31 inches, the same as the Ranger S and Mars 3.0 (same fundamental fold geometry across the Heybike fold-fat-tire line).

Rider fit: 4'11" to 6'3" per Heybike's sizing chart. Telescoping seatpost; height-adjustable handlebar.

Total payload: 400 lb (rider + cargo). Same spec as the Ranger S; the smaller battery doesn't reduce frame load capacity. Rear rack: 150 lb capacity (same as Ranger S). Standard rail mounts fit a Yepp Maxi child seat plus 95 lb of cargo.

Tires: 20×4 Kenda fat tires with reinforced sidewalls, the same supplier across the Heybike fold-fat-tire line.

Brakes: hydraulic disc front + rear with 180 mm rotors. A real step up from the mechanical discs on the cheaper Vivi Folding 20. On a bike at $799.99, hydraulic is the right call.

What the base Ranger sacrifices vs the Ranger S to hit the price:

1. 600 Wh battery vs Ranger S's 692 Wh: ~13% less capacity, ~5 mi less estimated range. The single most meaningful trade.
2. No 1000 W combo upgrade option: the Ranger S was offered with an optional 1000 W rated motor variant (at extra cost) for heavier riders / hilly cities. The base Ranger ships only with the 750 W rated unit.
3. 70 lb assembled is on the heavy side for a folder (the Vivi Folding 20 is 55 lb, for $599.99). Same trade-off the Ranger S makes.
4. Cadence sensor rather than torque sensor, same as the Ranger S; the Mars 3.0 is the in-brand torque-sensor upgrade, for $1,199.

For most apartment commuters under 10 miles each way, none of these are dealbreakers.

The base Heybike Ranger is the right bike for: budget-conscious step-through commuters under 10 mi each way, apartment dwellers who need a folding bike with hydraulic brakes + UL certification + a real 1400 W peak motor under $1,000.

It's the wrong bike for: anyone over 230 lb fully loaded (the 400 lb payload is the same as Ranger S, which is fine, but at this weight the 600 Wh battery drains faster), anyone with 15+ mi daily commute (the Ranger S's bigger battery, if you can find one in stock, or the 624 Wh Mars 3.0), or anyone who wants torque-sensor pedal feel (Mars 3.0 is the in-brand upgrade).

Cross-shopped against the Heybike Ranger S: Ranger S wins on battery capacity (692 Wh vs 600 Wh, ~5 mi more estimated range) and the optional 1000 W combo upgrade. Base Ranger wins on availability: it is in stock on Amazon, and the Ranger S had no in-stock listing we could link in September 2026. For commuters under 10 mi each way, base Ranger is the right value pick.

Cross-shopped against the Vivi Folding 20" ($599.99 against the Ranger's $799.99): Vivi wins on price, weight (55 lb vs 70 lb), and fold compactness (32×17×27 in vs 40×20×31 in). Base Ranger wins on: hydraulic brakes (Vivi is mechanical), 600 Wh battery (Vivi is 374 Wh, so ~60% more capacity), 1400 W peak motor (Vivi is 1000 W peak), 400 lb payload (Vivi is 285 lb), full Heybike app integration. For everyday commuting the base Ranger is the meaningful upgrade on paper: better-specified brakes, more battery and more payload, at a higher price.