Jasion · Commuter & cruiser
Jasion EB5 Roamer ST: real range, hills and charging
A 180 lb rider on the Jasion EB5 Roamer ST at 16 mph with relaxed pedaling over rolling hills (±2%) on pavement can expect about 35 miles per charge (28–42 mi), using 13.4 Wh per mile. The brand claims up to 62 miles. That is about 57% of the claim. On throttle only over hills it drops to about 23 miles.
$1,599
528
Wh battery
500
W motor
28
mph max
Price checked 2026-10-20. We may earn a commission.
How far does the Jasion EB5 Roamer ST go for your weight?
Miles per full charge on a new battery at 70°F on pavement, no wind. Each number is the middle of a ±20% band. Jasion claims up to 62 miles (no conditions stated).
| Rider weight | Easy 12 mph | Everyday 16 mph | Fast 20 mph | Throttle, hills |
|---|---|---|---|---|
| 150 lb | 68 mi (54–82) | 38 mi (31–46) | 26 mi (21–32) | 25 mi (20–30) |
| 200 lb | 61 mi (49–73) | 34 mi (27–40) | 25 mi (20–30) | 21 mi (17–26) |
| 250 lb | 55 mi (44–66) | 30 mi (24–36) | 24 mi (19–29) | 19 mi (15–23) |
| 300 lb | 51 mi (40–61) | 27 mi (22–32) | 23 mi (19–28) | 17 mi (13–20) |
- Easy 12 mph: 12 mph, relaxed pedaling, flat
- Everyday 16 mph: 16 mph, relaxed pedaling, rolling hills
- Fast 20 mph: 20 mph, relaxed pedaling, rolling hills
- Throttle, hills: 15 mph, no pedaling, hilly
Can the Jasion EB5 Roamer ST climb hills?
Highest steady speed on each grade, motor at its 1,200 W peak, limited by its 60 Nm of torque. A 10% grade is a steep city street; 15% is a hard hill.
| Rider | 5% grade | 10% grade | 15% grade |
|---|---|---|---|
| 180 lb, throttle | 22 mph | 14 mph | 10 mph |
| 180 lb, pedaling | 23 mph | 15 mph | 11 mph |
| 250 lb, throttle | 20 mph | 11 mph | stalls |
| 250 lb, pedaling | 21 mph | 12 mph | 9 mph |
Steepest grade at 8 mph (180 lb): 16% on throttle, 20% with moderate pedaling. Peak power lasts for short hills; on long climbs motors fall back toward their 500 W nominal rating.
Charging time and cost
Empty to full (2 A)
5 h 7 min
With a 5 A charger
2 h 39 min
Cost per full charge
$0.11
Cost per mile
0.29¢
US average residential electricity, 18.31¢/kWh (EIA, July 2026), 85% charger efficiency. Charge time: constant current to ~85%, then about an hour of top-off.
Range in cold weather
70°F
35
mi · 100% cap.
50°F
33
mi · 94% cap.
32°F
29
mi · 85% cap.
20°F
26
mi · 75% cap.
Everyday scenario, 180 lb rider. Capacity loss is temporary; store and charge the battery indoors and never charge it below freezing.
Simulate your own ride on the EB5 Roamer ST
Jasion EB5 Roamer ST specs
From the Jasion product page, checked 2026-10-20. est. marks values Jasion doesn't confirm.
- Price
- $699 (list $1,599)
- Class
- Class Not stated, throttle est.
Source note
28 mph with thumb throttle; no class stated
- Top assisted speed
- 28 mph
- Battery
- 528 Wh (48 V × 11 Ah), removable
Source note
Computed from 48V 11Ah; Wh not stated
- Motor
- 500 W nominal, 1,200 W peak, rear hub est.
Source note
Jasion lists only 1200W (peak); nominal not stated. 500W is an assumption
- Torque
- 60 Nm
- Pedal sensor
- Cadence
- Claimed range
- Up to 62 mi (No conditions stated)
Source note
FAQ text says 50 mi
- Weight
- 65 lb with battery
- Max load
- 330 lb rider + cargo
Source note
Spec table 330 lb; description says 300 lb; FAQ says 400 lb
- Wheels & tires
- 26" × 1.95"
- Frame
- Step-thru commuter, 80mm front suspension (description says 26x2.25 Michelin tires; spec table says 26x1.95)
- Charger
- 2 A
- Safety certification
- UL 2849 (e-bike system) + UL 2271 (battery)
Common questions
What is the weight limit of the Jasion EB5 Roamer ST?
Jasion rates the EB5 Roamer ST for 330 lb total (rider plus cargo). At 300 lb it still goes about 27 miles in everyday riding.
Can the Jasion EB5 Roamer ST climb steep hills?
On throttle alone, with a 180 lb rider, it can hold 8 mph up a grade of about 16% (our estimate from its 1200 W peak power and 60 Nm). With moderate pedaling, about 20%. On a 10% hill it holds about 14 mph on throttle.
How long does the Jasion EB5 Roamer ST take to charge?
About 5 h 7 min from empty with the 2 A charger, or about 2 h 39 min with a 5 A fast charger. A full charge costs about $0.11 at the US average of 18.31¢/kWh, or 0.29¢ per mile.
Is the Jasion EB5 Roamer ST a Class 2 or Class 3 e-bike?
Jasion lists it as Class Not stated, with a top assisted speed of 28 mph and a throttle. Class 3 speeds (up to 28 mph) are limited to pedal assist; on throttle, Class 2 rules cap it at 20 mph.
Which hitch racks fit the EB5 Roamer ST?
At 65 lb with battery (about 59 lb without it) and 1.95" tires, 21 of 23 hitch racks we track can carry it (some only with the battery removed).
| Kuat Piston ION 2-bike | 100 lb/bike | Fits |
| 1UP USA Super Duty Double | 100 lb/bike | Fits |
| Saris MHS 2 Bike Package | 100 lb/bike | Fits |
| Aventon Hitch Rack Pro | 85 lb/bike | Fits |
| Yakima OnRamp LX | 80 lb/bike | Fits |
| Hollywood Racks Sport Rider for Electric Bikes | 80 lb/bike | Fits |
| Hollywood Racks RV Rider E-Bike Rack | 80 lb/bike | Fits |
| Aventon Hitch Rack | 77 lb/bike | Fits |
| Thule Epos 2-bike | 75 lb/bike | Fits |
| Yakima StageTwo | 70 lb/bike | Fits |
| Hollywood Racks Destination E | 70 lb/bike | Fits |
| Allen Sports High Capacity Locking Premier for Electric Bikes | 70 lb/bike | Fits |
| Kuat Piston Pro X 2-bike | 67 lb/bike | Fits |
| Yakima OnRamp | 66 lb/bike | Fits |
| Thule EasyFold XT 2 | 65 lb/bike | Fits |
| 1UP USA Heavy Duty Double | 65 lb/bike | Fits |
| Thule T2 Pro XTR 2-bike | 60 lb/bike | Fits with battery removed |
| Kuat NV 2.0 2-bike | 60 lb/bike | Fits with battery removed |
| Kuat NV Base 2.0 2-bike | 60 lb/bike | Fits with battery removed |
| Saris Door County 2-Bike Motorized | 60 lb/bike | Fits with battery removed |
| Saris SuperClamp G4 2-Bike | 60 lb/bike | Fits with battery removed |
Doesn't fit: Hollywood Racks Sport Rider SE2 (too heavy), Saris Freedom G2 2-Bike (too heavy).
All hitch racks →
