1. Gotrax Nano (31 lb): lightest published weight
The Gotrax Nano weighs 31 lb, the lowest weight any in-stock bike in our Amazon catalogue publishes, and costs $379.99 (as of Oct 4, 2:10 PM EDT, subject to change). It is a 14-inch folder that collapses on a single hinge to about 30 x 14 x 22 inches, small enough to slide under a desk or a transit-system bench, and its review calls 31 lb "genuinely manageable" for the carry up the stairs. Gotrax built it to European rules: a 250 W rated motor with about 30 Nm of torque, and pedal assist that stops at 15.5 mph (25 km/h), well inside the 20 mph US Class 1 limit. It is sold through Amazon, Target, Walmart and Best Buy, with a Dallas-based service team behind it.
Everything that makes it light also limits it. Gotrax does not publish the battery size; our review estimates about 230 Wh from the 25-mile claim and plans on 12 to 15 miles at mid assist. There is no suspension at all, and the 250 W motor is the smallest class sold as an e-bike, so hills are mostly your legs. The frame suits riders of about 5 ft 0 in to 5 ft 7 in (the seatpost tops out near 33 inches of saddle height), and the review steers riders over about 175 lb elsewhere. The warranty is 1 year on the motor and battery and 90 days on other parts. Buy it when the carry matters more than the ride: a walk-up apartment, a train connection, a campus. Read the full Gotrax Nano review.
2. Bodywel 14" Mini (45 lb): lightest bike with a 20 mph throttle
The Bodywel 14" Mini weighs 45 lb and is the lightest bike on this page with a throttle and a 20 mph cap, a Class 2 e-bike for $199.99 (as of Oct 4, 2:10 PM EDT, subject to change). It runs a 400 W peak rear hub (the listing gives no rated figure, and a 400 W peak cannot be rated above the 750 W federal line), a removable 36 V x 10 Ah (360 Wh) battery, 14-inch tires and mechanical disc brakes, and it folds at the frame and the stem to about 28 x 22 x 14 inches. Its review rates 45 lb as light enough for most adults to lift into a car trunk or carry up a flight of stairs.
The 14 lb it adds over the Nano buys 4.5 mph and a bigger battery. Amazon reviewers cluster around 17 to 21 miles at pedal-assist levels 2 and 3, which works out at about 17 to 21 Wh per mile and holds up. The trades are a single-speed drivetrain that makes climbs over about 5% slow work, no suspension anywhere, and 14-inch wheels that feel twitchy at 20 mph. Watch the payload: 220 lb includes the 45 lb bike, which leaves about 175 lb for the rider. Its review records no UL 2271 or UL 2849 claim. Buy it for the last two to five miles of a car or train commute. Read the full Bodywel 14" Mini review.
3. Gotrax R1 (48 lb): lightest 20-inch folder
The Gotrax R1 weighs 48 lb, the lightest 20-inch folder we list that publishes a weight, and costs $659.99 (as of Oct 4, 2:10 PM EDT, subject to change); it is #14 in Amazon's Electric Folding Bikes (October 2026). Bigger wheels than the two 14-inch picks above mean steadier handling at 20 mph, and the R1 adds a 7-speed Shimano drivetrain (some production runs ship with 6 speeds, so check the listing), front and rear lights and a rear rack platform. The motor is a 350 W rated (500 W peak) rear hub with 40 Nm, the cap is 20 mph with a throttle, which is Class 2, and the single-hinge fold comes down to about 34 x 17 x 26 inches, which fits a sedan trunk.
Its review describes 48 lb as carryable up one flight of stairs by a moderately strong adult and awkward for three. Gotrax claims 40 miles from the 374 Wh pack at the lowest assist level, which would need 9.4 Wh per mile, so plan on about 20. There is no front suspension, the brakes are mechanical discs, and the cadence sensor and 350 W motor leave you working on grades of 5% or more. What the R1 has over the import brands here is the support path: it is stocked at Amazon, Target, Walmart and Best Buy, with US phone support and parts sold by Gotrax direct. The warranty is 1 year on motor and battery and 90 days on components. Read the full Gotrax R1 review.
4. Jasion EB5 (49.6 lb): lightest full-size bike with a 20 mph cap
The Jasion EB5 weighs 49.6 lb on its live listing and is the lightest full-size 26-inch bike with a 20 mph cap that we list (tied with two others), for $199 (as of Oct 4, 2:10 PM EDT, subject to change). The 48 lb Qlife Racer is lighter, but it is sold at 22 mph with a throttle. It is #3 in Amazon's Electric Mountain Bikes (October 2026) and had 2,283 reviews averaging 4.1 stars when we reviewed it in May 2026. It is a conventional hardtail with a front suspension fork, 7-speed Shimano gearing and mechanical disc brakes, and Jasion states a 500 W rated motor (1000 W peak, 65 Nm) and a 20 mph cap, a Class 2 e-bike on its own numbers. Its 330 lb payload is the highest of the seven picks. Amazon showed it as low in stock at our October 2026 check.
Light for a full-size bike still means a small battery: 36 V x 10 Ah, 360 Wh. Jasion claims 25 to 40 miles, and 40 miles from 360 Wh needs 9 Wh per mile, so our review plans on 14 to 20, about 16. The listing claims UL 2849 and names no certifier, so ask for the certificate through Amazon if your building requires one. The warranty is 1 year on the motor and battery and 6 months on the frame. Buy it if you want a bike that looks like a normal bicycle and weighs within 2 lb of the 20-inch folder above. Read the full Jasion EB5 review.
5. Gotrax Dolphin (49.6 lb): best for seniors
The Gotrax Dolphin weighs 49.6 lb, a figure our review takes from GoEBikeLife's review rather than the listing, and is the lightest in-stock step-through in our catalogue that publishes a weight, for $549.99 (as of Oct 4, 2:10 PM EDT, subject to change). The low frame means no leg swing over a top tube, and the rest of the bike points at the same rider: a throttle for pulling away from a stop, five pedal-assist levels, a walk-assist mode of about 3.7 mph that GoEBikeLife's reviewer singled out, a front suspension fork, a 7-speed Shimano drivetrain, and an adjustable stem that fits riders from 5 ft 2 in to 6 ft 4 in, rated for riders up to 264 lb. The 350 W rated (500 W peak) motor and 20 mph cap make it Class 2. It is #20 in Amazon's Electric City Bikes (October 2026) and the top pick in our seniors guide.
The cost of the light frame is the smallest published battery among the picks, 280.8 Wh (only the Nano's estimated 230 Wh is smaller). Gotrax claims 30 miles at the lowest assist and about 15.5 on the throttle alone, and our review plans on 10 to 15 real miles. The pack comes out to charge, and at about 6 lb it is far easier to carry indoors than the bike. The brakes are mechanical discs, and the box has no rack or fenders. UL 2849 certification is reported by GoEBikeLife, so check for the mark on the current listing photos if your building asks. Gotrax backs it with 365-day parts assurance and US phone support. Read the full Gotrax Dolphin review.
6. Vivi MT26GUL (50 lb): lightest in-stock bike with a named-lab UL claim
The Vivi MT26GUL weighs 50 lb and is the lightest in-stock bike we list whose UL claim names a lab: it is certified to UL 2849 by SGS, for $369.99 (as of Oct 4, 2:10 PM EDT, subject to change). Like the Dolphin it is a 26-inch step-through, here with a 500 W rated (750 W peak) rear hub, a removable 48 V x 7.8 Ah (374 Wh) battery on a key lock, 7-speed Shimano gearing, mechanical disc brakes, a front fork and cruise control, which holds your speed without a thumb on the throttle. Vivi fits riders from about 5 ft 1 in to 6 ft 1 in, and the payload is 300 lb.
Two things to check. Its review records the top speed as 20 to 21.7 mph with a throttle, and anything over 20 mph on the throttle is outside Class 2, so confirm the limit on the display or with Vivi before riding where class matters. And Vivi claims 50 miles at the lowest assist; at a typical 15 to 20 Wh per mile, 374 Wh gives 19 to 25 miles, so plan on about 20. The battery itself weighs about 5 lb, which is what you carry upstairs to charge. A named lab matters because NYC Local Law 39 requires e-bikes sold, leased or rented in New York City to be certified to UL 2849, and many apartment buildings ask for the same paperwork before indoor charging. Read the full Vivi MT26GUL review.
7. RPINT Mini 14 (55 lb): most battery for the weight of the seven picks
The RPINT Mini 14 weighs 55 lb, the most of the seven, and earns its place with the most battery for its weight of the seven picks, 480 Wh, plus the strongest paperwork here, for $199 (as of Oct 4, 2:10 PM EDT, subject to change). It documents UL 2271 for the battery and UL 2849 for the complete bike with SGS named as the lab for both, states a 20 mph cap with a throttle (Class 2), and is #3 in Amazon's Electric Folding Bikes (October 2026). Its motor is sold as 740 W peak in the title and 700 W peak in the bullets, with no rated figure, and a motor's rated output cannot exceed its peak, so it sits under the 750 W federal line.
The 480 Wh pack (48 V x 10 Ah) comes with a 20 to 25 mile pure-electric claim that works out at about 19 Wh per mile, which is realistic; plan on 20 to 28 miles. That is roughly double the Nano's estimated battery for 24 lb more bike. The weight is its own review's main warning: 55 lb is fine for a car trunk or a train, genuinely awkward for two flights of stairs every day, and the folded dimensions are not published. The frame is high-carbon steel with front suspension only, on 14-inch wheels with 3 speeds and a 260 lb payload. Read the full RPINT Mini 14 review.