QNUT BK20 Fat Tire Electric Bike 48V 18A 1500W 28MPH UL2849 Certified

1 nombre total de critique

Prix normal: $599.00
Prix normal: ~~$951.00~~
Prix de vente: $599.00

Local Warehouse USA

Variantes du produit

2-7 day Delivery

We currently offer free shipping to all U.S. states, excluding Hawaii, Alaska, and Puerto Rico.

In-stock orders are generally shipped within 2 business days, unless otherwise noted on the product page. Once shipped, orders typically arrive within 2–7 business days. ( We CAN NOT ship to PO BOXES or APO.)

In rare cases where an order cannot be shipped within 5 business days, we will notify you promptly.

14-day Easy Return

We offer a 14-day return window, allowing you to request a return within 14 days after receiving your order.
For more details, please visit our Refund Policy.

12-month Warranty

All scooters/bikes come with a 1-year manufacturer's warranty for the original owner, covering manufacturing defects.

This warranty does not cover damage caused by accidents, water exposure, or misuse.

For full details, please visit our Warranty Page

UL2849 Certified E-Bike

UL2849 Certified E-Bike refers to an electric bike that has passed UL 2849 safety standards, covering the electrical drive train system—including battery, charger, and motor. This certification ensures protection against fire, electric shock, and other hazards, making the e-bike compliant with North American safety regulations.

The HR-BK20 model, marketed under the brands RONZLLA, Rooder, QNUT, and HAPPYRUN, successfully passed UL 2849 safety standards on Feb 12th, 2026. This certification confirms that the e-bike's entire electrical system (battery, charger, and motor) meets rigorous North American requirements for protection against fire, electric shock, and other potential hazards.

E-Bike Spare Parts Availabe

We supply a full range of reliable e-bike spare parts—from frames, forks, and hub motors to batteries, controllers, displays, brakes, sensors, wheels, and all essential components listed below.

With comprehensive after-sales support, we ensure quick sourcing, compatibility, and long-term availability. Order with confidence—your worry‑free after‑service is our promise.

Parts we offer:

Frame
Rigid Fork
Front & Rear Wheels
Hub Motor
Lithium-Ion Battery
Standard eBike Controller
LCD/LED Display
Thumb/Twist Throttle
Magnetic PAS
Brake Levers (cutoff switch)
Mechanical Disc Brakes (set)
Rear Derailleur, Cassette, Chain, Shift Lever
Bottom Bracket, Crankset, Pedals
Seatpost, Saddle, Handlebars, Grips
Headset, Stem
Front & Rear LED Lights
Full Fenders, Kickstand, Wiring Harness

Your reliable partner for quality spares & peace of mind.

eBike Sales & Service – Nearby

Electric Bike BK20 Local Warehouse in USA

GA001 (US East Warehouse Address)
Contact: Big Max LLC
Warehouse Address: 320 Morgan Lakes Industrial Blvd. Unit D04, Pooler GA. 31322
Working Hours: Monday to Friday; 9 AM - 5 PM

GA001 Ebike - We Are Near You:

Distance (miles)	ZIP Code	City	State
0.00	31322	Pooler	GA
3.93	31408	Savannah	GA
5.91	31405	Savannah	GA
5.93	31418	Savannah	GA
6.02	31302	Bloomingdale	GA
6.59	31415	Savannah	GA
7.27	31409	Savannah	GA
7.29	31407	Port Wentworth	GA
7.62	31419	Savannah	GA
8.48	31318	Meldrim	GA
8.78	31402 / 31403 / 31420 / 31416 / 31412 / 31414	Savannah	GA
8.82	31421	Savannah	GA
10.25	31401	Savannah	GA
10.64	31307	Eden	GA
12.11	31404	Savannah	GA
12.66	31406	Savannah	GA
14.35	31326	Rincon	GA
15.98	31308	Ellabell	GA
16.08	31324	Richmond Hill	GA
17.10	31411	Savannah	GA
17.57	29927	Hardeeville	SC
18.03	31410	Savannah	GA
18.72	31309	Fleming	GA
19.80	31312	Guyton	GA
21.82	31331	Townsend	GA
22.40	31328	Tybee Island	GA
22.83	29935	Ridgeland	SC
25.30	31313	Hinesville	GA
25.31	31329	Springfield	GA
26.44	31303	Clyo	GA
27.27	29945	Levy	SC
28.03	31323	Ludowici	GA
28.38	31316	Pembroke	GA
28.54	29909	Okatie	SC
29.98	29915	Daufuskie Island	SC
30.44	29940	Tillman	SC
30.69	29936	Rincon	SC
31.85	29945	Garnett	SC
32.20	29910	Bluffton	SC
32.91	29938	Pineland	SC
33.19	29902	Beaufort	SC
33.19	29903	Beaufort	SC
33.19	29904	Beaufort	SC
34.52	29907	Beaufort	SC
35.28	29924	Estill	SC
35.41	29920	St. Helena Island	SC
35.60	29944	Varnville	SC
36.58	29911	Brunson	SC
37.03	31315	Fort Stewart	GA
37.48	29918	Fairfax	SC
37.48	29921	Gifford	SC
38.04	29932	Miley	SC
38.04	29939	Scotia	SC
38.25	29926	Hilton Head Island	SC
38.29	29928	Hilton Head Island	SC
38.39	29941	Sycamore	SC
39.25	31321	Midway	GA
39.77	31305	Darien	GA
40.03	29914	Coosawhatchie	SC
40.71	29943	Ulmer	SC
41.14	29906	Sheldon	SC
42.37	29916	Early Branch	SC
42.37	29922	Grays	SC
42.37	29931	Luray	SC
42.37	29942	Tarboro	SC
43.18	29929	Islandton	SC
43.48	29912	Clyo	SC
43.48	29913	Crocketville	SC
43.74	29923	Hampton	SC
44.08	29908	Brunson	SC
44.34	31320	Riceboro	GA
45.51	31310	Glennville	GA
46.14	29901	Beaufort	SC
47.13	29945	Garnett	SC
47.95	30474	Claxton	GA
48.11	29905	Beaufort	SC
48.15	29934	Luray	SC
48.91	30425	Daisy	GA
49.32	31314	Richmond Hill	GA
49.70	30415	Bellville	GA
49.95	31304	Crescent	GA
49.97	30411	Ailey	GA

CA002 Warehouse (US West Warehouse Address)
Contact: Mary-1059
Address: 9448 Richmond Pl unit B Rancho Cucamonga CA 91730
Working Hours: 09:00 - 17:00, Monday to Friday

CA002 Best E-Bike for Sale - We Are Near You:

Distance (Miles)	ZIP Code	City	State
0	91730	Rancho Cucamonga	CA
~2	91701	Rancho Cucamonga	CA
~3	91737	Rancho Cucamonga	CA
~4	91739	Rancho Cucamonga	CA
~6	91761	Ontario	CA
~7	91762	Ontario	CA
~8	91763	Montclair	CA
~9	91710	Chino	CA
~10	91786	Upland	CA
~11	91784	Upland	CA
~12	91709	Chino Hills	CA
~13	92509	Jurupa Valley	CA
~14	92501	Riverside	CA
~15	92503	Riverside	CA
~15	92505	Riverside	CA
~16	92336	Fontana	CA
~17	92335	Fontana	CA
~17	92860	Norco	CA
~18	92506	Riverside	CA
~19	92861	Villa Park	CA
~20	91752	Mira Loma	CA
~20	92337	Fontana	CA
~25	92867	Orange	CA
~30	92869	Orange	CA
~30	91773	San Dimas	CA
~32	92374	Redlands	CA
~35	92683	Westminster	CA
~35	91740	Glendora	CA
~38	92562	Murrieta	CA
~40	92647	Huntington Beach	CA
~42	92886	Yorba Linda	CA
~45	92626	Costa Mesa	CA
~45	92627	Costa Mesa	CA
~45	91711	Claremont	CA
~48	90250	Hawthorne	CA
~48	90280	South Gate	CA
~50	90247	Gardena	CA
~50	90201	Bell	CA
~50	90255	Huntington Park	CA

After-Sale Service Address in USA

CA002 Warehouse (US West)
Contact: Mary—1033
Address: 9448 Richmond Pl unit B Rancho Cucamonga CA 91730
Working Hours: 09:00—17:00, Monday to Friday

GA001 Warehouse (US East)
Contact: Big Max LLC—1033
Warehouse Address: 320 Morgan Lakes Industrial Blvd. Unit D04, Pooler GA. 31322
Working Hours: Monday to Friday; 9 AM - 5 PM

More Details

Customer Support

We're happy to help! If you have any questions about our products or services, please reach out to us at:

Email: rooder@ronzlla.com

Whatsapp

QNUT BK20: The Ultimate 1500W Fat Tire Electric Bike Guide

The QNUT HR-BK20 (also marketed under the RONZLLA, Rooder, and HAPPYRUN brands) is more than just an e-bike; it is a high-performance utility vehicle designed for the modern adventurer. Whether you are navigating urban potholes or conquering loose gravel trails, the BK20 delivers a seamless blend of power and durability.

Technical Specifications: Built for Performance

The BK20 is defined by its robust electrical system and heavy-duty components, designed to support riders up to 330 lbs.

Feature	Specification
Motor	1500W Peak Brushless Geared Hub Motor
Top Speed	28 MPH
Battery	48V 18Ah Removable Lithium-Ion
Max Range	60–90 Miles (Pedal-Assist Mode)
Tires	20" x 4.0" Fat Tires with aggressive tread
Braking	High-response Mechanical Disc Brakes
Gearing	7-speed Shimano-style system

Understanding UL 2849 Certification: Your Safety First

The QNUT BK20 is a UL 2849 Certified E-Bike, having successfully passed rigorous testing on February 12th, 2026.

What is UL 2849?

UL 2849 is the gold standard for electric bicycle safety in North America. Unlike basic battery tests, this certification evaluates the entire electrical drive train system, including:

The Battery: Testing for thermal runaway and fire hazards.
The Charger: Ensuring protection against electric shocks.
The Motor & Controller: Monitoring for overheating and electrical malfunctions.

Choosing a UL 2849 certified bike like the BK20 ensures your equipment meets modern compliance standards, providing peace of mind during both storage and operation.

Maintenance & Spare Parts: Long-Term Reliability

We believe an e-bike is a long-term investment, which is why we maintain a comprehensive inventory of genuine spare parts to keep your BK20 on the road.

Critical Parts We Stock:

Electronics: Replacement 48V controllers, high-resolution LCD displays, and wiring harnesses.
Drive Train: 1500W hub motors, 48V 18Ah lithium batteries, and thumb throttles.
Wear & Tear Items: 20" x 4.0" fat tires, mechanical disc brake sets, and magnetic PAS sensors.

Our dedicated service ensures quick sourcing and guaranteed compatibility, so you never have to worry about finding the right component.

FAQ: Frequently Asked Questions

How does the BK20 handle hills?
The BK20 features a peak 1500W motor paired with a dual-sensor system (speed + torque). This combination provides the torque necessary to conquer steep inclines effortlessly, while the 7-speed gearing allows you to maintain a natural pedaling cadence.

What is the charging time?
While the high-capacity 18Ah battery provides a massive range, it is designed for convenience. The battery is removable and lockable, allowing you to charge it indoors or at your desk using a standard power outlet. Typical charging times for a battery of this capacity range from 6 to 9 hours.

Is it weatherproof?
Yes. The BK20 features an IP65-rated smart color display and weather-resistant components designed to operate in temperatures ranging from -4°F to 140°F.

Why Buy From Us?

When you choose our shop, you aren't just buying a bike—you're gaining a partner in your adventure.

Fast Local Shipping: We ship from our US East (Georgia) and US West (California) warehouses, with most orders arriving within 2–7 business days.
Comprehensive Warranty: Every bike comes with a 1-year manufacturer’s warranty covering the frame, motor, battery, and electronic components.
Dedicated Post-Sale Support: Our 24/7 customer support team is available via email and WhatsApp to assist with assembly, troubleshooting, or parts sourcing.