FREESKY Ranger Air M-540

FREESKY's product page

The FREESKY Ranger Air M-540 is an electric bike with a 48V 25Ah Lithium Battery, a 2000W + 2000W Brushless Peak Motor, a stated top speed of 34 MPH, a stated range of 60-105 Miles, a weight of 95 LBS and a load capacity of 400 LBS.

Last updated: 8 September 2026

What we found

1 battery is documented for it: FP4825R0, from the manufacturer's own documentation.
33 specifications are published for it, each with the source it was read from.
2 certification standards are cited for it: UL 2271, UL 2849.
1 recall or safety notice is matched to it.

Assembled from the evidence on this page. Every figure and count below is shown with the source it was read from.

Motor and performance

Peak power: 4000W
Torque: 105N·m*2
ranger-air-m-540 · retrieved by us 7 September 2026
“105N·m*2 Torque”
Source: freeskycycle.com/products/ranger-air-m-540
105 N·M*2
product-comparison · retrieved by us 7 September 2026
torque: "105 N·M*2"
Source: freeskycycle.com/pages/product-comparison
100 N·m × 2
e-bike-torque-explained-how-much-torque-do-you-need · retrieved by us 8 September 2026
“Ranger Air M-540: 100 N·m × 2”
Source: freeskycycle.com/blogs/news/e-bike-torque-explained-how-much-torque-do-you-need
Top speed: 34 MPH
Claimed range: 60-105 Miles
Payload capacity: 400 LBS
Assist sensor: Cadence Sensor
Throttle: Thumb Throttle
Motor, as the maker lists it: 2000W + 2000W Brushless Peak Motor
Pedal assist levels: 0~5 level pedal assist

Battery and charging

Battery system: 48V 25Ah Lithium Battery
Charging time, stated for the machine: 6-8 hours
Charger: US Standard 3A Smart Charger

Brakes and safety

Brakes: 180MM 4-piston Hydraulic Brakes

Frame and components

Rear shock: 180 mm Coil Rear Shock
Front fork: 120 mm Oil-Sprung Front Fork
Tires: 26" x 4" Fat Tires
Chain: KMC
Derailleur: SHIMANO 7 Speed
Seat post: 30.9*300MM Alloy Seatpost
Display: LCD Color Display
Kickstand: Adjustable Heavy Duty Aluminum
Frame type: Step-Thru

Size and fit

Overall height: 46"
Rider height: 5'3" ~ 6'8"
Weight: 95 LBS
Total length: 78"
Wheelbase: 50"
Reach: 22"
Seat height, lowest: 35"
Seat height, highest: 41"
Step-through height: 18"
Wheel diameter: 29"

Fitment across the range

Frame material: Upgraded 6061 Aluminum

Warranty, returns and support

Buying a spare battery: Ranger Air 25AH

Certifications

UL 2271Standard for Batteries for Use in Light Electric Vehicle (LEV) ApplicationsVerified certification recordIssuer: TÜV SÜD America, Inc.Cert #U10 128702 0003 Rev. 00TÜV SÜD certificate U10 128702 0003 Rev. 00 (UL 2271) — cdn.shopify.com/s/files/1/0605/5188/9131/files/UL2271-Ranger-Air-M540-25Ah.pdf
Applies in: US and Canada
Issued to FreeSky's manufacturer, GuangZhou Yansan Science & Technology, on 3 April 2025, covering battery FP4825R0, 47.19 V, 24.5 Ah. TÜV SÜD's own certificate register lists it as valid. FreeSky publish it on this machine's product page. TÜV SÜD certified it; we did not test it.
UL 2849Standard for Electrical Systems for eBikesVerified certification recordIssuer: TÜV SÜD America, Inc.Cert #U14 128702 0008 Rev. 00TÜV SÜD certificate U14 128702 0008 Rev. 00 (UL 2849) — cdn.shopify.com/s/files/1/0605/5188/9131/files/UL2849-Ranger-M-540.pdf
Applies in: US and Canada
Issued to FreeSky's manufacturer, GuangZhou Yansan Science & Technology. TÜV SÜD's own register lists it as valid. TÜV SÜD certified it; we did not test it. FreeSky sell two machines as M-540 — this one and the Ranger Plus — and the certificate names the code, not the machine.

Each standard listed is an independent claim about this specific product — one standard does not imply compliance with another.

Battery specs & replacement options