Commuter
Euphree Solar Sparrow Belt
$1,699
Price
504 Wh
Battery
53 lb
Weight
Euphree Solar Sparrow Belt vs Vvolt Centauri II
Two commuter e-bikes at $1,699–$2,399, every published spec lined up. Nothing here is estimated: a figure the manufacturer does not publish is shown as “—”.
Where they differ
- The Centauri II claims 20 more miles of range.
- The Solar Sparrow Belt costs $700 less.
- The Solar Sparrow Belt is rear hub; the Centauri II is mid-drive.
- The Solar Sparrow Belt is hardtail (front only); the Centauri II is rigid.
- The Solar Sparrow Belt has a throttle; the Centauri II has no throttle.
Every spec, side by side
| Solar Sparrow Belt | Centauri II | |
|---|---|---|
| Headline | ||
| Price | $1,699 | $2,399 |
| Category | Commuter | Commuter |
| Price per Wh | $3.37 per Wh | $4.90 per Wh |
| Model year | 2026 | 2026 |
| Motor | ||
| Torque | — | 120 Nm |
| Motor power | 500 W | 350 W |
| Peak power | — | 650 W |
| Drive | Rear hub | Mid-drive |
| Motor make | Bafang | Vvolt |
| Drive system | Bafang | — |
| Sensor | Torque + cadence | Torque + cadence |
| Battery & range | ||
| Battery | 504 Wh | 490 Wh |
| Voltage | 48V | — |
| Capacity | 10.5 Ah | 13.6 Ah |
| Cells | LG | — |
| Removable battery | Yes | Yes |
| Range (claim) | 40 mi | 60 mi |
| Range as stated | Up to 40 miles | Up to 60 miles real-world on pedal assist |
| Est. real range | 32 mi | 31 mi |
| Estimate assumes | 16 Wh per mile | 16 Wh per mile |
| Weight & capacity | ||
| Weight | 53 lb | 53 lb |
| Max load | 300 lb | — |
| Rack capacity | 50 lb | — |
| Class & speed | ||
| Ships as | Class 3: pedal assist to 28 mph | Class 3: pedal assist to 28 mph |
| Unlocks to | Class 3 | Class 3 |
| Class | Class 3 | Class 3 |
| Throttle | Yes | No |
| Top assisted speed | 28 mph | 28 mph |
| Build | ||
| Gears | Single speed | — |
| Drivetrain | Gates Carbon belt, single speed | Gates carbon belt |
| Brakes | Hydraulic disc | Hydraulic disc |
| Front rotor | 180 mm | 180 mm |
| Rear rotor | 180 mm | 180 mm |
| Suspension | Hardtail (front only) | Rigid |
| Fork travel | 30 mm | Rigid |
| Rear travel | None | None |
| Front suspension | Yes | No |
| Suspension seatpost | — | No |
| Tires | 26 x 2.4 | — |
| Display | Colour LCD, left side | — |
| Frame | 6061 aluminum | — |
| Sizes | One size, 13 inch seat tube | S/M, M/L, L/XL |
| Step-through option | Yes | — |
| Included | ||
| Lights | Yes | Yes |
| Fenders | Yes | — |
| Rack | Yes | — |
| Kickstand | Yes | — |
| Safety | UL 2849* | UL 2849* |
| Safety certification | UL 2849: most models, confirm this one | UL 2849: most models, confirm this one |
| As the maker states it | "SGS certified to meet UL 2271 (battery) & UL 2849 (system)" | The Alpha II is tested and certified to the rigorous UL-2849 standard |
| Warranty | 5 yr | — |
Specs transcribed from euphree.com on 09/21/2026 and vvolt.com on 09/20/2026. Manufacturers revise specs without notice: confirm before buying.