FREESKY
FreeSky sell electric bikes, mostly full-suspension and fat-tyre models, into the United States. The only company name they publish is Freeskycycle eBike LTD, in their copyright line, and their terms of service are governed by the laws of China while their storefront is priced in dollars and their support line is a US toll-free number. They describe themselves as having spent twenty years in electric bicycles, which is their own account and names no founding year.
freeskycycle.com
Last updated: 8 September 2026
Battery and charging
- What they need before selling you a battery
- They need your serial number, not just the model
“Purchase Instructions: To ensure compatibility, Battery must be purchased based on the specific model and serial number of your vehicle.”
Source: freeskycycle.com/products/extra-battery-pack
Battery care and safety
- Where they say to charge it
- Charge and store bike and battery in a dry location, between 50 °F – 77 °F (10 °C – 25 °C).
Ideally, charge it outdoors or in a garage with good airflow.
“Avoid charging your bike indoors where heat could build up in a confined space, or near flammable materials such as blankets, rugs, or even paper. Tip : Always charge your battery on a hard, flat surface in a well-ventilated area. Ideally, charge it outdoors or in a garage with good airflow.”
Source: freeskycycle.com/blogs/news/preventing-e-bike-battery-fires-tips-for-safety-and-maintenance
- Storage temperature the manufacturer advises
- between 50 °F – 77 °F (10 °C – 25 °C)
Disputed
“Charge and store bike and battery in a dry location, between 50 °F – 77 °F (10 °C – 25 °C). Let bike dry completely before using again.”
Source: cdn.shopify.com/s/files/1/0605/5188/9131/files/M-520_Instruction_English.pdf
Other sources state
“Charge and store bike and battery in a dry location, between 50 °F – 77 °F (10 °C – 25 °C). Let bike dry completely before using again.”
Source: cdn.shopify.com/s/files/1/0605/5188/9131/files/M-520_Instruction_English.pdf
Frame and components
- The display's password lock
- enter the password: 1212 to turn on the bike
- Who makes the display
- Sciwil make the SW-M818 display
“Turn on the bike: First,take out the battery and press the switch button on the battery. Then, use NFC to swipe the screen, or hold the power button and then enter the password: 1212 to turn on the bike.”
Source: cdn.shopify.com/s/files/1/0605/5188/9131/files/M-520_Instruction_English.pdf
“USERS GUIDE SW-M818 E-Bike Display Model: SW-M818 Protocol: Lithium II Version: V6.05 Changzhou Sciwil E-Mobility Technology Co., Ltd.”
Source: freeskycycle.com/cdn/shop/files/User_Manual_M818X_With_Turn.pdf
Compatibility
- A spare pack sold for two machines
- One stock code covers two machines
“SPA000188-LSJ059”
Source: freeskycycle.com/products/extra-battery-pack
Fitment across the range
- Throttle type across the range
- Thumb Throttle
rotating the throttle backward toward the rider
“The throttle is used by slowly and carefully rotating the throttle backward toward the rider. Do not use the throttle unless you are on the bike.”
Source: cdn.shopify.com/s/files/1/0605/5188/9131/files/M-520_Instruction_English.pdf
Disputed
“THROTTLE Thumb Throttle”
Source: freeskycycle.com/products/alaska-pro-m-520
Other sources state
Identity
- Where the serial numbers are engraved
- on the frame, typically located near the bottom of the head tube
- Manufacturer of record
- YANSAN Technology Co., LTD
- The company they name as theirs
- Freeskycycle eBike LTD
- What they say about their own history
- FREESKY has spent 20 years pioneering the R&D and sales of electric bicycles
- Manuals for machines they no longer sell
- Four machines have a manual but no listing
“You can find your Ebike's serial number on the frame, typically located near the bottom of the head tube. This unique code helps us manage warranty issues, identify the model and year of manufacture, and handle theft claims if needed.”
Source: cdn.shopify.com/s/files/1/0605/5188/9131/files/M-520_Instruction_English.pdf
“YANSAN Technology Co., LTD Contact us if you experience issues relating to riding Maintenance and safety, or errors/faults with your FREESKY e-bike.”
Source: cdn.shopify.com/s/files/1/0605/5188/9131/files/M-520_Instruction_English.pdf
“© 2026 Freeskycycle eBike LTD All Rights Reserved.”
Source: freeskycycle.com
“FREESKY has spent 20 years pioneering the R&D and sales of electric bicycles, driven by a vision to create eco-friendly transportation without sacrificing performance or style. Over time, we've grown into a trusted manufacturer known for integrity, innovation, and a commitment to excellence.”
Source: freeskycycle.com/pages/about-freesky
“27.5" NOVA ELECTRIC BIKE”
Source: freeskycycle.com/cdn/shop/files/Nova-B-360-User-Manual.pdf
Buying and owning it
- Assembly advice from the manufacturer
- After the initial break-in period of 50-100 miles (80-160 km)
- Where the manufacturer says they are sold
- purchases made from unauthorized sellers are not covered by Freesky warranty policy
- How often to run the safety check
- Before every ride, and after every 25-45 miles(40-72 km)
“After the initial break-in period of 50-100 miles (80-160 km), your cables, spokes, and chain may stretch, and bolted connections can loosen. It is essential to have a certified, reputable bike mechanic perform a tune-up after this break-in period, which can vary based on factors like total weight, riding style, and terrain.”
Source: cdn.shopify.com/s/files/1/0605/5188/9131/files/M-520_Instruction_English.pdf
“Please note that purchases made from unauthorized sellers are not covered by Freesky warranty policy. Below list are authorized sellers: Website: www.freeskycycle.com Amazon Stores: FreeskyE-BIKE FREESKYStore”
Source: freeskycycle.com/blogs/news/unauthorized-seller-alert
“Notice: Before every ride, and after every 25-45 miles(40-72 km), we advise you following the pre-ride safety checklist.”
Source: cdn.shopify.com/s/files/1/0605/5188/9131/files/M-520_Instruction_English.pdf
Warranty, returns and support
- Service documentation they publish
- Rear Wheel Axle Nut: 55N/M
- Where they say buying is covered
- Their site and two Amazon stores
“RECOMMENDED TORQUE FOR FREESKY EBIKE Rear Wheel Axle Nut: 55N/M Front wheel Axle Nut: 45N/M Crank Arm Nut: 45N/M Bottom Axle: Left 40-50N.m, Right50-70N.m Pedal: 35N/M Stem Riser: 6-10N/M Stem Pich Bolts 9N/M Stem Clamp Bolts 6N/M Kichstand Mounting Bolts: 10N/M Rear Derailleur: 6 -8N/M Shifter Clamp Bolts: 6 -8N/M Brake Caliper Mounting Bolts: 10N/M Brake lever Clamp Bolts: 6 -8N/M Saddle Clamp Bolts: 20N/M Seat Post Clamp Bolt: 15-20N/M Disc Mounting Bolts: 7N/M Fender Mounting Bolts: 5N/M Headlight Mounting bolt: 6N/M Throttle Clamp bolts: 1N/M Controller Box Mounting Bolts: 1N/M Rear Triangle Connection Bolts: 30N/M”
Source: freeskycycle.com/cdn/shop/files/Freesky_Service_Manual.pdf
“Below list are authorized sellers: Website: www.freeskycycle.com Amazon Stores: FreeskyE-BIKE FREESKYStore”
Source: freeskycycle.com/blogs/news/unauthorized-seller-alert
Law and where you can ride
- When they say a licence may be needed
- A high-powered electric bike that falls outside a state's e-bike definition may instead be treated as a moped, motorized bicycle, motor-driven cycle, or motorcycle.
- Which country's law governs a purchase
- governed by and construed in accordance with the laws of China
- Their disclaimer on their own legal writing
- This article is for general informational purposes only and is not legal advice.
- The speed their support page says the bikes ship at
TOP SPEED (PAS) 45 MPH
warrior-ultra-m-530 · retrieved by us 7 September 2026
Source: freeskycycle.com/products/warrior-ultra-m-530
All FREESKY e-bike speeds are limited to 32km/h ( 20 MPH)
trouble-shooting · retrieved by us 7 September 2026
“All FREESKY e-bike speeds are limited to 32km/h ( 20 MPH) which is the legal speed limit of power-assist bike (e-bikes). You will need a license and a plate for your e-bike plus insurance if you would like to go faster. For further information, please contact your local Ministry of Transportation.”
Source: freeskycycle.com/pages/trouble-shooting
Top Speed: 38 MPH — Unlockable for full performance.
best-moped-style-electric-bikes-2025-freesky-cheetah-mt-380-leads-the-pack · retrieved by us 8 September 2026
“Power and Performance - Dual 2000W Motors (4000W Peak) — All-wheel drive system for superior hill-climbing. - Top Speed: 38 MPH — Unlockable for full performance. - 60Ah 2880Wh Battery — Delivers 200+ miles per charge.”
Source: freeskycycle.com/blogs/news/best-moped-style-electric-bikes-2025-freesky-cheetah-mt-380-leads-the-pack
- A speed-unlocking part they sell
- An unlimited speed controller is a sophisticated device designed to modify the speed limitations of an e-bike
“Motor power, maximum assisted speed, pedals, throttle operation, rider age, and even how the bike is classified under state law can affect what rules apply. A high-powered electric bike that falls outside a state's e-bike definition may instead be treated as a moped, motorized bicycle, motor-driven cycle, or motorcycle. There are also important exceptions. New Jersey has introduced licensing and registration requirements for certain e-bikes, while Alaska uses a different legal framework that can make classification more complicated.”
Source: freeskycycle.com/blogs/news/do-you-need-a-license-for-an-electric-bike
“SECTION 18 - GOVERNING LAW These Terms of Service and any separate agreements whereby we provide you Services shall be governed by and construed in accordance with the laws of China.”
Source: freeskycycle.com/policies/terms-of-service
“Legal Disclaimer: This article is for general informational purposes only and is not legal advice. E-bike laws can change, and local governments, parks, trails, and municipalities may impose additional requirements. Always check the current laws and regulations in your state and local area before riding.”
Source: freeskycycle.com/blogs/news/do-you-need-a-license-for-an-electric-bike
The maker’s own documents give different figures
“An unlimited speed controller is a sophisticated device designed to modify the speed limitations of an e-bike. Traditional e-bike controllers are programmed to cap speeds to comply with legal restrictions and safety standards. In contrast, an unlimited speed controller bypasses these restrictions, allowing riders to push their e-bikes beyond standard speed limits.”
Source: freeskycycle.com/blogs/news/electric-bike-revolution-embracing-the-unlimited-speed-controller
Recalls and fire safety
- What the CPSC recall search returns
- No results for "FREESKY" in Recalls.
Source: cpsc.gov/Recalls?search_combined_fields=FREESKY&field_rc_date_value=&field_rc_date_value_1=&field_rc_hazards_target_id=All&field_rc_recall_by_product_target_id=All&field_rc_manufactured_in_value=
How this brand publishes
- Whether their articles' spec tables can be trusted
- Their Cheetah article gives it 77 lbs; the machine's own page says 122 LBS
- Their article's own editing notes, published
- These integrations position Freesky as a responsible, safety-conscious leader in the micromobility space that has met the rigorous UL 2849 standard
“Category Specifications Dimensions 67.7 × 25.2 × 40.9 in (1720 × 640 × 1040 mm) Net Weight 77 lbs (35 kg) Motor (Peak Power) 2000W (single motor) / 4000W (dual motor) Battery 48V 60Ah, 21700 lithium cells, removable, UL-certified Charging Time 6–8 hours (100–240V input) Range 60 miles pure electric / 90–120 miles pedal assist Top Speed 38 mph”
Source: freeskycycle.com/blogs/news/freesky-cheetah-m-380-the-all-terrain-electric-motorbike-for-snow-sand-and-city-streets
“These integrations position Freesky as a responsible, safety-conscious leader in the micromobility space that has met the rigorous UL 2849 standard, without making the entire blog solely about them. The focus remains on UL 2849, with Freesky presented as a prime example of a brand doing it right.”
Source: freeskycycle.com/blogs/news/ul-2849-the-essential-safety-standard-powering-trust-in-electric-micromobility-and-why-brands-like-freesky-lead-the-way
Certification claims
- Who holds the certificate
- GuangZhou Yansan Science & Technology Co.,LTD
- Certificate number
- U14 128702 0008 Rev. 00
- Test report behind it
- 64171250608601
- Who issued it
- TÜV SÜD America, Inc.
- Standards tested against
- UL 2849:2020/R:2022-12 CAN/UL 2849:2022
- Models the certificate covers
- M-530, M-540, M-410, A-340
- Whether the testing was required
- The product was tested on a voluntary basis
- Ingress rating the certifier tested
- IP34 (for E-Bikes)
- Charger and system voltage as tested
- Input: 100-240V~, 50/60Hz, 2,5A Output: 54,6VDC, 3,0A
- Which mark their bikes actually carry
- Look for the UL Mark!
- What UL's own register returns
- 0 Results
- Who they say issued their certificates
TÜV SÜD America, Inc.
TÜV SÜD certificate U10 128702 0003 Rev. 00 — FP4825R0 · retrieved by us 7 September 2026
“TÜV SÜD America, Inc. • 401 Edgewater Place Suite #500 • Wakefield • MA 01880 • USA”
Source: freeskycycle.com/cdn/shop/files/UL2271-Eurostar-Ultra-M410-25Ah.pdf
UL (Underwriters Laboratories)
trouble-shooting · retrieved by us 7 September 2026
“All FREESKY e-bikes are certified with both UL 2271 and UL 2849, ensuring the highest standards of battery and overall e-bike safety. UL 2271 – Battery Safety Certification Issued by: UL (Underwriters Laboratories), a global independent safety science organization headquartered in the United States.”
Source: freeskycycle.com/pages/trouble-shooting
- What the FCC equipment search returns
- There are no applications on file that match the search criteria specified
- Checked against the certifier's register
- No certificate for FP4835R0
- The model this certificate number covers
- Certificate U10 128702 0001 covers FP4830R0
- Models this system certificate covers
- Ten model codes across five UL 2849 certificates
- What they claim for the whole range
- They claim it for every model
- A certified pack with no machine named
- One certified pack is not on any machine's page
- An article that published its own brief
- Their UL 2849 article lists the brand lines added to it
“Holder of Certificate: GuangZhou Yansan Science & Technology Co.,LTD 202, Building 6, No.25-Min'an North Road Tanbu Town, Huadu District 510800 Guangzhou City PEOPLE'S REPUBLIC OF CHINA”
Source: freeskycycle.com/cdn/shop/files/UL2849-Eurostar-Ultra-M410.pdf
“CERTIFICATE No. U14 128702 0008 Rev. 00”
Source: freeskycycle.com/cdn/shop/files/UL2849-Eurostar-Ultra-M410.pdf
“Test report no.: 64171250608601”
Source: freeskycycle.com/cdn/shop/files/UL2849-Eurostar-Ultra-M410.pdf
“TÜV SÜD America, Inc. • 401 Edgewater Place Suite #500 • Wakefield • MA 01880 • USA”
Source: freeskycycle.com/cdn/shop/files/UL2849-Eurostar-Ultra-M410.pdf
“Tested according to: UL 2849:2020/R:2022-12 CAN/UL 2849:2022”
Source: freeskycycle.com/cdn/shop/files/UL2849-Eurostar-Ultra-M410.pdf
“Model(s): M-530, M-540, M-410, A-340 Brand Name: FREESKY”
Source: freeskycycle.com/cdn/shop/files/UL2849-Eurostar-Ultra-M410.pdf
“The product was tested on a voluntary basis and complies with the USA and Canadian standards stated on this certificate.”
Source: freeskycycle.com/cdn/shop/files/UL2849-Eurostar-Ultra-M410.pdf
“Degree of Protection: IP34 (for E-Bikes)”
Source: freeskycycle.com/cdn/shop/files/UL2849-Eurostar-Ultra-M410.pdf
“Ratings: For battery charger: Input: 100-240V~, 50/60Hz, 2,5A Output: 54,6VDC, 3,0A For E-Bikes: Rated voltage: 47,19VDC”
Source: freeskycycle.com/cdn/shop/files/UL2849-Eurostar-Ultra-M410.pdf
“When you see brands like Freesky prominently displaying their UL 2849 certification, it signifies a commitment to your safety. Look for the UL Mark!”
Source: freeskycycle.com/blogs/news/ul-2849-the-essential-safety-standard-powering-trust-in-electric-micromobility-and-why-brands-like-freesky-lead-the-way
Source: productiq.ulprospector.com/en/search?term=Freesky
The maker’s own documents give different figures
“There are no applications on file that match the search criteria specified: Applicant Name: Freesky”
Source: apps.fcc.gov/oetcf/eas/reports/GenericSearch.cfm
“Displaying 0 results for search.”
Source: tuvsud.com/en/customer-hub/ps-cert/?q=FP4835R0
“No. U10 128702 0001 Rev. 00 Holder of Certificate: GuangZhou Yansan Science & Technology Co.,LTD Product: Batteries Model(s): FP4830R0 Status Valid”
Source: tuvsud.com/en/customer-hub/ps-cert/?q=FP4830R0
“Model(s): M-520”
Source: tuvsud.com/en/customer-hub/ps-cert/?q=Yansan
“All FREESKY e-bikes are certified with both UL 2271 and UL 2849, ensuring the highest standards of battery and overall e-bike safety.”
Source: freeskycycle.com/products/alaska-pro-m-520
“Model(s): FP4815R0 Brand Name(s): FREESKY”
Source: cdn.shopify.com/s/files/1/0605/5188/9131/files/UL2271-Nova-B360-15Ah.pdf
“Key Changes & Why: Introduction: Added the phrase "(And Why Brands Like Freesky Lead the Way)" to the title and explicitly mentioned Freesky understanding the imperative in the opening paragraph. This immediately signals their relevance.”
Source: freeskycycle.com/blogs/news/ul-2849-the-essential-safety-standard-powering-trust-in-electric-micromobility-and-why-brands-like-freesky-lead-the-way
Models
- Alaska Pro M-520
4500W Peak Brushless Motor · 48V 45Ah Cell Lithium Battery（18+27Ah） · 98-175 Miles
- Cheetah MT-380
2000W + 2000W Peak Motor · 48V 60Ah Battery · 120-200 Miles
- Eurostar Turbo M-410
48V 25Ah Lithium Battery · 60-105 Miles · 99 LBS
- Ranger Air M-540
2000W + 2000W Brushless Peak Motor · 48V 25Ah Lithium Battery · 60-105 Miles
- Ranger Plus M-540
2500W + 2500W Brushless Peak Motor · 48V 30Ah SAMSUNG/LG Lithium Battery · 60-120 Miles
- Rocky Pro A-320
2500W Brushless Peak Motor · 48V 25Ah Samsung / LG Cells Lithium Battery · 45-90 Miles
- Swift Horse Ultra X-6E
4000W Peak BAFANG Brushless Motor · 48V 35Ah LG Cells Lithium Battery · 87-140 Miles
- Warrior Pro M-530
2000W + 2000W Brushless Peak Motors · 48V 30Ah LG Cell Lithium Battery · 60-120 Miles
- Warrior Ultra M-530
3000W + 3000W Brushless Peak Motors · 60V 30Ah LG Cell Lithium Battery · 60-120 Miles
Batteries
Chargers
- 54.6V 3A charger
54.6 V DC · 3.0 A · 100–240 V, 50/60 Hz, 2.5 A