Three current US folding e-bikes sell within $20 of each other: Kingbull's Literider 2.0 at $979, Lectric's XP4 (500W) at $999 and Velotric's Fold 1 at $999. All three fold, run on 48 V systems, roll on 20-inch wheels, use hydraulic disc brakes and state UL 2849 certification. Beyond that they make different choices about battery size, motor rating, sensor type, tire width and weight, and those choices decide which one fits a given rider. This page puts the manufacturer-published figures side by side and explains what each difference means in use. We have not ridden any of the three and we publish no ratings.
The spec sheets, side by side
| Kingbull Literider 2.0 | Lectric XP4 (500W) | Velotric Fold 1 | |
|---|---|---|---|
| Price (current / compare-at) | $979 / $1,699 | $999 / $1,078 | $999 / $1,499 |
| Frame | folding, step-through | folding, step-thru or step-over | folding, step-through |
| Tires | 20" × 4.0, puncture-proof (CST) | 20" × 3.0, puncture-resistant, Slime pre-installed | 20" × 3.0, puncture-resistant |
| Motor nominal / peak | 750 W (Bafang) / not stated | 500 W / 1092 W | 750 W / 1050 W |
| Torque | 80 Nm | 55 Nm | 70 Nm |
| Battery | 48 V 15 Ah, 720 Wh | 48 V 10.4 Ah, 500 Wh | 48 V, 608 Wh |
| Claimed range | 55 mi | up to 50 mi | 55 mi pedal assist / 45 mi throttle |
| Class | Class 2, adjustable to Class 3 | Class 1, 2 or 3 | Class 1 / 2 / 3 |
| Top speed | 20 mph default, adjustable to 28 mph; throttle 20 mph | 28 mph | 20 mph default, adjustable to 28 mph |
| Pedal sensor | cadence | torque | cadence |
| Brakes | hydraulic, 2-piston, power-off levers | hydraulic, 180 mm rotors | hydraulic, 180 mm rotors |
| Gears | Shimano 7-speed | Shimano Altus 8-speed, 11–32 T | Shimano 7-speed |
| Front suspension | coil, 60 mm | adjustable fork with lockout | coil, 60 mm, with lockout |
| Display | 4.0" color | 3.5" color TFT, detachable, USB-C | 1.8" LCD |
| Weight (as published) | 71 lb | 62 lb without battery (+7 lb battery) | 63 lb without fenders, kickstand and pedals |
| Max payload | 400 lb | 330 lb | 440 lb |
| Rear rack limit | 150 lb | not stated on the spec page | 120 lb |
| Rider height | 5'2"–6'6" | 4'10"–6'3" | 4'9"–6'5" |
| Folded L × W × H | 30.7 × 17.7 × 31.5 in | 37 × 17 × 29 in | 37.8 × 19.7 × 33.5 in |
| UL wording | "Certificated by UL 2849"; cells "Certificated by UL 2580" | "certified to UL 2849"; battery "certified to UL 2271" | "UL 2849 and UL 2271 Certified"; cells "UL 2580 Certified" |
| Warranty | 2 years (battery prorated) | 1 year | 2 years limited |
Figures are copied from each manufacturer's US product or specification page as read on the date shown at the top of this page. Lectric's weight excludes the battery; Velotric's excludes fenders, kickstand and pedals; Kingbull publishes a single complete-bike figure. Treat weight comparisons across the three as approximate.
What each bike is built around
Kingbull Literider 2.0 — the largest battery and the widest tires in the group. The Literider 2.0 carries a 720 Wh pack, a 750 W nominal motor rated at 80 Nm, 4.0-inch fat tires and a 400 lb payload limit, and it is the lowest-priced of the three at $979. It also publishes the smallest folded footprint (30.7 × 17.7 × 31.5 in). The trade-off is weight: at 71 lb complete it is the heaviest bike here, so the fold is most useful for a trunk, a garage or an RV bay rather than for carrying up stairs. The pedal sensor is cadence-based, and Kingbull ships it in a Class 2 configuration with a 20 mph default that the rider can raise toward 28 mph. Kingbull's other current US models, in the order the store sells them, are listed on our Kingbull model page.
Lectric XP4 (500W) — the torque sensor and the lowest published weight. The XP4 is the only one of the three with a torque sensor, which meters assistance by how hard you press the pedals rather than by whether the cranks are turning. It has the lowest published weight (62 lb before the 7 lb battery), an 8-speed drivetrain, a detachable color display with a USB-C port, and Class 1/2/3 configurability. Its 500 Wh battery is the smallest of the three and its claimed range (up to 50 miles) the shortest; the 750 version at $1,299 moves to 840 Wh. Lectric's warranty is one year against two for the other two brands.
Velotric Fold 1 — the highest payload and the most detailed certification statement. The Fold 1 pairs a 750 W / 1050 W peak motor with a 608 Wh battery, publishes the highest payload limit (440 lb) and the widest rider-height range (4'9"–6'5"), and states UL 2849 for the system, UL 2271 for the battery and IPX7 / IPX6 ratings for battery and frame. Like the Literider 2.0 it uses a cadence sensor; Velotric's torque-sensor folder is the Fold 1 Plus at $1,449. The 1.8-inch LCD is the smallest display of the three.
Where the numbers actually separate them
Battery and range. 720 Wh (Literider 2.0), 608 Wh (Fold 1), 500 Wh (XP4). Claimed ranges are 55, 55 and 50 miles, which are closer together than the capacities because each brand measures range under its own conditions. For planning, capacity in watt-hours is the number to compare; the range claims are best treated as each maker's best case.
Motor rating. Kingbull and Velotric both quote 750 W nominal; Lectric quotes 500 W nominal with a 1092 W peak, which is close to Velotric's 1050 W peak. Kingbull does not publish a peak figure for the Literider 2.0. Torque, where stated, runs 80 / 70 / 55 Nm. Compare nominal to nominal and peak to peak; the two figures are not interchangeable.
Sensor. This is the clearest functional difference. A torque sensor (XP4) responds to pedal pressure and generally feels more like an amplified bicycle; a cadence sensor (Literider 2.0, Fold 1) delivers the selected level of assistance whenever the cranks turn. All three bikes also have a throttle. Neither is wrong; they suit different riders.
Tires and weight. The Literider 2.0's 4.0-inch tires add traction and cushioning on rough or loose surfaces and are part of why it weighs 71 lb. The 3.0-inch tires on the XP4 and Fold 1 keep those bikes roughly 8–9 lb lighter on paper, with the weight-basis caveat above.
Folded size. Kingbull's published figure is the most compact in length and height; Lectric's is the narrowest; Velotric's is the largest in all three dimensions. If the bike has to fit a specific trunk or closet, measure the space and check the current figure on the product page before ordering.
Payload and rack. Velotric publishes the highest total payload (440 lb), Kingbull the highest rear-rack limit (150 lb). Lectric's spec page states a 330 lb maximum and does not state a rack limit separately.
Class and speed. All three can be configured for 28 mph pedal assist. Kingbull and Velotric ship at a 20 mph default and let the rider raise it; Lectric lists 28 mph and selectable Class 1, 2 or 3 modes. Whether 28 mph is legal where you ride depends on state and local rules — see the class and UL guide.
Certification wording. All three state UL 2849 for the e-bike system. Lectric and Velotric additionally state UL 2271 for the battery pack; Kingbull and Velotric state UL 2580 for the cells. If a building or an insurer asks for a specific standard, match the exact wording on the current product page rather than assuming one standard implies another.
Warranty. Two years from Kingbull (battery prorated) and Velotric; one year from Lectric.
Spec-based fit
- Longer rides, mixed surfaces, or a bike that folds mainly for storage and vehicle transport: the Literider 2.0's 720 Wh battery, fat tires and 400 lb payload cover the most ground at the lowest price of the three. Plan on lifting 71 lb.
- Lifting the bike regularly, or a pedal feel closer to a conventional bicycle: the XP4's torque sensor and lower published weight are the reasons to accept the smaller battery and the shorter warranty.
- Heavier riders, a wide rider-height range, or the most explicit certification and ingress-protection statements: the Fold 1's 440 lb payload, 4'9"–6'5" fit range and UL 2849 / UL 2271 / IPX7 wording are its distinguishing figures, with a 608 Wh battery in the middle of the group.
Nothing in this comparison measures ride quality, motor tuning, brake feel, customer service or how each bike holds up over time. Those are things a spec sheet cannot show, ours included. For the rest of the folding category, including the lighter compact folders and the longer-range models above $1,299, see Folding E-Bikes, Compared by Spec Sheet.
Specs and prices: kingbullbike.com, lectricebikes.com and velotricbike.com product and specification pages. Ranges, speeds and weights are manufacturer claims measured under their own conditions. Confirm on the retailer's page before buying. Some links on this page are affiliate links, and we may earn a commission at no extra cost to you.
Data checked, sources, and what we did not test
Data checked: 2026-09-10. Specifications and prices were read from each manufacturer's US product page on that date and can change without notice.
Sources: Kingbull, Lectric, Velotric. No review sites, forums or retailer ratings were used.
What we did not test: ride quality, brake feel, real-world range, durability and customer service. We have not ridden these bikes and publish no ratings or rankings.
