FREESKY Alaska Pro M-520 Electric Bike – 48V 45Ah
Key specifications
- Peak motor power
- 4500W peak
- Battery
- 48V 45Ah dual / 2160Wh
- Chargers included
- Two: 3A + 2A
- Range
- 98–175 miles / 158–282km (est.)
- Tyres
- 26 × 4-inch fat tyres
- Brakes
- 180mm 4-piston hydraulic
Dual batteries, two chargers and full-suspension comfort
The FREESKY Alaska Pro M-520 combines two removable batteries with a substantial 48V 45Ah capacity. Its 18Ah upper and 27Ah lower packs provide 2160Wh of nominal energy, giving you a large battery reserve for longer rides on permitted private land.
Two chargers are included: one 3A and one 2A. Allow approximately 8–10 hours for charging, depending on the batteries’ starting charge and conditions. Full suspension, 26 × 4-inch fat tyres and four-piston hydraulic brakes help you manage uneven surfaces, while the included rack and mudguards add practical utility.
FREESKY Alaska Pro M-520 Electric Bike – 48V 45Ah Technical Specifications
| Model | FREESKY Alaska Pro M-520 |
|---|---|
| Product type | Fat-tyre electric bike |
| Motor | Brushless rear hub motor |
| Peak motor power | Up to 4500W peak |
| Torque | Up to 170Nm |
| Sensor | Cadence sensor |
| Pedal assist | Levels 0–5 |
| Throttle | Thumb throttle |
| Battery | 48V 45Ah dual lithium battery system |
| Battery configuration | 18Ah upper battery + 27Ah lower battery |
| Estimated range | Approximately 158–282 km |
| Charging time | Approximately 8–10 hours; varies with starting charge and conditions |
| Chargers included | Two smart chargers: one 3A and one 2A; UK cables included |
| Transmission | Shimano 7-speed |
| Chain | KMC chain |
| Tyres | 26 × 4.0-inch fat tyres |
| Suspension | Front and rear suspension |
| Front fork | Oil-sprung suspension fork |
| Brakes | Front and rear 180mm four-piston hydraulic brakes |
| Frame | Upgraded 6061 aluminium |
| Display | LCD colour display |
| Lighting | Front headlight |
| Kickstand | Adjustable heavy-duty aluminium kickstand |
| Seatpost | 30.9 × 350mm alloy |
| Bike weight | 40.8 kg |
| Maximum load | 181 kg / 400 lb |
| Total length | 194.3 cm |
| Wheelbase | 120.4 cm |
| Total height | 111.8 cm |
| Seat height | 80–103.4 cm |
| Seat tube angle | 73° |
| Reach | 45.7 cm |
| Standover height | 51.8 cm |
| Wheel diameter | 67.8 cm |
| Recommended rider height | 168–203 cm |
| Colour options | Black, blue-grey and green |
| In the box | Electric bike, two removable batteries, two chargers (3A + 2A), UK cables, user manual, mudguards and rear rack |
Frequently Asked Questions
What motor is fitted to the Alaska Pro M-520?
A brushless rear hub motor with up to 4500W peak output and 170Nm of torque; peak output is not the continuous rated power used for EAPC classification.
How is the dual battery configured?
The battery system combines an 18Ah upper battery and 27Ah lower battery for 48V 45Ah and 2160Wh total capacity.
What range can I expect?
The estimated range is approximately 158–282 km. Actual range varies with load, assistance, terrain, temperature and riding style.
Does the Alaska include two chargers?
Yes. The Alaska includes one 3A charger and one 2A charger for its two-battery system. Allow approximately 8–10 hours for charging, depending on the batteries’ starting charge and conditions. Follow the supplied instructions and use the correct charger for each pack.
What rider height does it suit?
The recommended rider-height range is 168–203 cm.
Delivery, returns and support
Specialist support from Electric Scooters London. Speak to our team about choosing a model, setup, maintenance and compatible parts, with servicing and repair support available through our London workshop.
Explore our electric bike range or view our repairs and servicing.
Before ordering: Delivery information, returns & refunds, and warranty & support.
FREESKY Alaska Pro M-520 Electric Bike – 48V 45Ah Product Images
