Ebike Oracle

Review · Vivi

mountain7.5/10

Vivi H7UL 27.5" Electric Mountain Bike

By John WeeksUpdated May 17, 2026How we score

Spec-verified against the manufacturer listing

Our verdict

7.5
/ 10

The Vivi H7UL is a 27.5-inch hardtail electric mountain bike that delivers UL2849 certification, Shimano 21-speed gearing, and a 1000W peak hub motor at under $600, a rare combination in the budget e-MTB tier. The trade-offs are honest: mechanical disc brakes, an entry-level suspension fork, and a cadence sensor that engages slower than torque-sensor bikes twice the price. For riders who want a UL-certified, multi-geared e-MTB for fire roads and light singletrack at a budget price, it has no direct competitor.

Best for
Budget-conscious riders wanting a UL-certified hardtail e-MTB for fire roads and light singletrack under $600

As an Amazon Associate I earn from qualifying purchases. Ebike Oracle may also earn a commission on links to other retailers. Full disclosure.

See today's price at Amazon

Free 30-day returns via Amazon

Not sold on this one? See every ranked pick in our guide to the best e-bikes under $600 on Amazon.

Ranked #2 in Best Vivi E-Bikes (2026): All 12 Reviewed & Ranked, #5 in Best Electric Bikes Under $1,500 in the US (2026) and #6 in Best Electric Bikes for Beginners (2026).

Vivi H7UL 27.5" Electric Mountain Bike

At a glance

Run this in our range calculator →
Motor
500W
Battery
499Wh
Range
40mi
Top speed
22mph

The numbers

Vivi H7UL 27.5" Electric Mountain Bike is a Class 2 electric mountain bike that scores 7.5/10 on our editorial rubric, last verified on May 17, 2026. Amazon lists it at $550 right now. On Amazon it currently ranks #145 Best Seller in Electric Mountain Bikes. It pairs a 500 W hub motor with 45 Nm of torque and a 499 Wh battery, good for a claimed range of up to 40 miles and assisted speeds up to 22 mph. As a Class 2 e-bike it adds a throttle while keeping assistance capped at 20 mph, which keeps it street-legal in nearly every US state without a licence or registration. The bike weighs 52 lb and is rated to carry 300 lb of rider and cargo. It best suits budget-conscious riders wanting a UL-certified hardtail e-MTB for fire roads and light singletrack under $600.

Pros

  • + UL2849 certified at under $600, so legal for indoor charging in buildings that require the standard
  • + Shimano 21-speed gearing provides real gear range for mixed terrain, rare at this price
  • + 1000W peak motor handles 8-10% grades at PAS 3
  • + Removable 499 Wh battery with key-lock release, practical for apartment charging
  • + 27.5" wheels roll over obstacles better than 26" standard in this price tier
  • + SGS third-party safety certification

Cons

  • - Mechanical disc brakes fade on long descents and in wet conditions
  • - Cadence sensor engages with ~1-2 second delay vs instant torque-sensor response
  • - Entry-level 80mm suspension fork bottoms out on aggressive trail riding
  • - No integrated lights, so add aftermarket for traffic riding
  • - 52 lb weight makes it impractical to carry up more than one flight of stairs
  • - No app, GPS, or smart features: basic LCD display only

Who is this for?

  • Budget-conscious riders wanting a UL-certified hardtail e-MTB for fire roads and light singletrack under $600
  • Apartment dwellers in buildings requiring UL 2849 for e-bike charging
  • Riders upgrading from single-speed budget e-bikes who want 21-speed hill capability
  • Weekend trail riders doing 20-30 mile loops

What this bike actually is

The H7UL is a 27.5-inch hardtail electric mountain bike: 500W rated (1000W peak) rear-hub motor, 48V 10.4Ah removable battery, Shimano 21-speed derailleur, mechanical disc brakes, and a lockable front suspension fork. SGS certified to UL 2849, the US electrical safety standard that New York City's Local Law 39 requires for e-bikes sold in the city and that many multi-unit residential buildings ask for before indoor charging.

The full review, section by section. Tap any section to read it.

Battery and range

Vivi claims 50 miles PAS 1. Real-world range at PAS 3 with a 160-180 lb rider on mixed terrain is 30-40 miles. The 499 Wh battery removes via key-lock for indoor charging. Cold weather below 40°F drops range 15-20%. Full charge: 5-6 hours on the included 2A charger.

Brakes, suspension, and ride feel

Mechanical disc brakes (160mm rotors) are adequate for dry trail and urban riding. They fade on long descents and in wet conditions. The lockable front fork provides 80mm of travel, enough for fire roads and light singletrack, not aggressive trail riding. The cadence-sensor PAS engages with ~1-2 second delay; the thumb throttle compensates at stops.

Who should buy it

Buy the H7UL if you want a UL2849-certified, 21-speed hardtail e-MTB for under $600. Skip it if you ride aggressive trails, need hydraulic brakes, or want torque-sensor responsiveness. At $999 against this bike's $549.99, the Kingbull Hunter 2.0S upgrades to hydraulic brakes, a 1300W peak motor and an 864 Wh battery.

Vivi H7UL 27.5" Electric Mountain Bike

Ready to buy?

See current pricing at Amazon

We update prices as the listing changes, and the final price is set by the retailer at checkout.

See today's price at Amazon

Frequently asked questions

Is the Vivi H7UL actually trail-ready?

It's a real hardtail e-MTB, not a rebadged commuter. The 27.5-inch wheels, 21-speed Shimano gearing, and lockable 80mm fork handle fire roads, light singletrack, and mixed gravel. It's NOT an enduro or downhill bike: the fork is entry-level and the brakes are mechanical. For serious trail riding, step up to the Kingbull Hunter 2.0.

What does UL 2849 certification mean?

UL 2849 certifies the e-bike's complete electrical system (battery, motor, controller, charger) for fire and electrical shock hazards. New York City requires it for e-bikes sold in the city under Local Law 39, and a growing number of multi-unit residential buildings ask for it before indoor charging. The H7UL carries SGS certification to UL 2849, not just manufacturer self-declared.

Does the battery come out for charging?

Yes, the 48V 10.4Ah battery removes via key-lock. Charges in 5-6 hours. A second battery (~$200) doubles your range.

What height rider does this fit?

Vivi recommends 5'4" to 6'2" for the 27.5" high-step frame. Shorter riders may find standover height challenging; the step-through Vivi MT26GUL is the alternative.

Vivi H7UL 27.5" Electric Mountain Bike

Bottom line

Is the Vivi H7UL 27.5" Electric Mountain Bike for you?

Check the live price + availability before deciding.

Check price & stock at Amazon

If this isn't the one

All reviews →