Rad Power Bikes · Commuter & cruiser · discontinued
Rad Power Bikes RadCity 4: real range, hills and charging
A 180 lb rider on the Rad Power Bikes RadCity 4 at 16 mph with relaxed pedaling over rolling hills (±2%) on pavement can expect about 44 miles per charge (35–52 mi), using 13.9 Wh per mile. The brand claims up to 45 miles. That is about 97% of the claim. On throttle only over hills it drops to about 28 miles. It is discontinued; of the current commuter and cruiser e-bikes we track, the lowest-priced that goes as far is the Lectric XPress2 ($1,399, about 46 miles).
672
Wh battery
750
W motor
20
mph max
Price checked 2026-10-23. We may earn a commission.
How far does the Rad Power Bikes RadCity 4 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. Rad Power Bikes claims up to 45 miles (brand: 'up to 45+ miles' per charge. outdoorgearlab says rad's low-end claim was 25 miles.).
| Rider weight | Easy 12 mph | Everyday 16 mph | Fast 20 mph | Throttle, hills |
|---|---|---|---|---|
| 150 lb | 77 mi (62–93) | 47 mi (38–57) | 32 mi (26–38) | 31 mi (25–37) |
| 200 lb | 68 mi (55–82) | 41 mi (33–50) | 30 mi (24–37) | 27 mi (21–32) |
| 250 lb | 61 mi (49–74) | 37 mi (29–44) | 29 mi (23–35) | 23 mi (19–28) |
| 300 lbover max load | 56 mi (45–67) | 33 mi (26–40) | 28 mi (22–33) | 21 mi (17–25) |
- 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
Independent range tests
Reviewers rode the RadCity 4 until the battery died. Our model, run in the same conditions (180 lb rider assumed; testers don't publish weight), is shown next to each result.
throttle, hilly · 15 mph avg
26 mi
measured by OutdoorGearLab · 25.8 Wh/mi
Our model: 28 mi (23–34) within band
Can the Rad Power Bikes RadCity 4 climb hills?
Highest steady speed on each grade, motor at an estimated 1,200 W peak, limited by its 40 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 | 20 mph | 9 mph | stalls |
| 180 lb, pedaling | 20 mph | 15 mph | 7 mph |
| 250 lb, throttle | 19 mph | stalls | stalls |
| 250 lb, pedaling | 20 mph | 10 mph | 3 mph |
Steepest grade at 8 mph (180 lb): 10% on throttle, 14% with moderate pedaling. Peak power lasts for short hills; on long climbs motors fall back toward their 750 W nominal rating.
Charging time and cost
Empty to full (2 A)
6 h 14 min
With a 5 A charger
3 h 6 min
Cost per full charge
$0.14
Cost per mile
0.30¢
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
44
mi · 100% cap.
50°F
40
mi · 94% cap.
32°F
36
mi · 85% cap.
20°F
31
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 RadCity 4
Rad Power Bikes RadCity 4 specs
From the Rad Power Bikes product page, checked 2026-10-23. est. marks values Rad Power Bikes doesn't confirm.
- Price
- $1,599
Source note
Last US list price $1,599 on radpowerbikes.com (archived 2021-10-19, Out of Stock). Launch price was $1,499 (archived March 2020). The RadCity 5 Plus replaced it in late 2021. The product URL now 301-redirects to the RadCity 5 Plus page, and the bike is not in the 2026-10-23 US catalog. The step-thru sold alongside it was the older RadCity Step-Thru 3; no 'Step-Thru 4' was found. web.archive.org
- Class
- Class 2, throttle est.
Source note
The brand page lists a half-twist throttle but no class. OutdoorGearLab describes it as a Class 2 e-bike limited to 20 mph. outdoorgearlab.com
- Top assisted speed
- 20 mph est.
Source note
The archived brand page does not give a top speed in its spec data. outdoorgearlab.com
- Battery
- 672 Wh (48 V × 14 Ah), removable
Source note
Brand: '48V, 14 Ah (672 Wh) with Lithium NMC Samsung 35E cells'. web.archive.org
- Motor
- 750 W nominal, rear hub
Source note
750W Shengyi direct-drive rear hub with regenerative braking. web.archive.org
- Torque
- 40 Nm
Source note
- Pedal sensor
- Cadence
- Claimed range
- Up to 45 mi (Brand: 'Up to 45+ miles' per charge. OutdoorGearLab says Rad's low-end claim was 25 miles.)
Source note
- Weight
- 64 lb with battery
Source note
OutdoorGearLab measured just over 63 lb. web.archive.org
- Max load
- 275 lb rider + cargo
Source note
The integrated rear rack is rated 60 lb. web.archive.org
- Wheels & tires
- 26" × 2.3"
- Frame
- 6061 aluminum, single 18.5" high-step frame
- Charger
- 2 A
Source note
- Safety certification
- No UL standard named on the product page
Common questions
What is the weight limit of the Rad Power Bikes RadCity 4?
Rad Power Bikes rates the RadCity 4 for 275 lb total (rider plus cargo). At 250 lb it still goes about 37 miles in everyday riding.
Can the Rad Power Bikes RadCity 4 climb steep hills?
On throttle alone, with a 180 lb rider, it can hold 8 mph up a grade of about 10% (our estimate from its 1200 W estimated peak power and 40 Nm). With moderate pedaling, about 14%. On a 10% hill it holds about 9 mph on throttle.
How long does the Rad Power Bikes RadCity 4 take to charge?
About 6 h 14 min from empty with the 2 A charger, or about 3 h 6 min with a 5 A fast charger. A full charge costs about $0.14 at the US average of 18.31¢/kWh, or 0.30¢ per mile.
Is the Rad Power Bikes RadCity 4 a Class 2 or Class 3 e-bike?
Rad Power Bikes lists it as Class 2, with a top assisted speed of 20 mph and a throttle.
Which hitch racks fit the RadCity 4?
At 64 lb with battery (about 56 lb without it) and 2.3" 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 →
