Power Bank NOBIS

NOBIS N4520 20,000mAh 45W Fast-Charging Power Bank
Keep your essential devices powered throughout the day with the NOBIS N4520 Portable Power Bank. Combining a large 20,000mAh battery, up to 45W USB-C Power Delivery, four charging outputs and a clear digital display, it is designed for travel, work, university and everyday backup power.
Its versatile selection of USB-C and USB-A ports allows you to charge several compatible devices from one portable unit.
45W USB-C Fast Charging
The N4520 delivers up to 45W output to compatible smartphones, tablets, laptops and other USB-C devices.
According to the manufacturer’s testing, it can charge an iPhone 15 Pro from 0% to approximately 60% in 30 minutes under suitable conditions.
Actual charging speed depends on the connected device, cable, battery condition and supported charging protocol.
Large 20,000mAh Capacity
The high-capacity 20,000mAh battery provides reliable backup power when access to a wall socket is limited.
Based on the manufacturer’s estimates, a fully charged power bank may provide approximately:
1.05 charges for a 14-inch MacBook
3.96 charges for an iPhone 15
2.6 charges for a Samsung Galaxy S22 Ultra
3.83 charges for an iPad mini
Actual results will vary according to the device, usage, battery health, temperature and power conversion efficiency.
Charge Up to Four Devices
Two USB-C ports and two USB-A ports allow you to connect up to four compatible devices simultaneously.
This is particularly useful for:
Families and groups travelling together
Business professionals carrying several devices
Students using phones, tablets and accessories
Users sharing power while away from mains electricity
Charging speed may be reduced when multiple devices are connected because the available power is shared between the ports.
Two-Way Fast Charging
The power bank supports fast output for connected devices and rapid input when recharging its internal battery.
The manufacturer states that it can be fully recharged in approximately two hours when used with a compatible 45W or higher USB-C Power Delivery charger.
The wall charger is not included. Actual recharging time may vary depending on the charger, cable and operating conditions.
Clear Digital Battery Display
The built-in digital display shows the remaining battery level from 0% to 100%.
This makes it easier to monitor the available power and recharge the unit before it runs out, offering a clearer indication than standard battery lights.
Wide Device Compatibility
The N4520 is suitable for a broad range of compatible USB-powered electronics, including:
iPhones and Android smartphones
Samsung Galaxy devices
Tablets and iPads
Selected USB-C laptops
Bluetooth earphones and headphones
Portable speakers
Digital and sports cameras
Handheld gaming consoles
Other USB-C and USB-A accessories
Maximum charging performance depends on the power requirements and protocols supported by each device.
Charging for Low-Power Devices
The power bank can also be used with smaller accessories such as AirPods, wireless earphones and other low-current USB devices.
This makes it a versatile charging solution for both high-power electronics and compact everyday accessories.
Intelligent Temperature Management
A heat-dissipation structure and dynamic temperature-management system help regulate operating temperatures during charging.
The integrated circuitry is designed to support stable and efficient power delivery while protecting the power bank and connected devices.
Some warmth during high-speed charging is normal.
Multiple Safety Protections
The internal safety system helps provide protection against common electrical risks, including:
Overheating
Over-current
Over-voltage
Overcharging
Short circuits
Over-discharging
The product is certified to recognised safety and environmental standards, including CE, FCC, UL, RoHS, WEEE and PSE.
Portable Design
The durable plastic shell and compact format make the power bank suitable for carrying in a backpack, laptop bag or travel case.
Its black finish provides a clean, practical appearance for both professional and everyday use.
Ideal For
Business and leisure travel
Daily commuting
University and study
Remote working
Smartphone and tablet charging
Laptop backup power
Portable gaming
Emergency preparedness
Product Specifications
Brand: NOBIS
Model: N4520
Product Type: Portable Power Bank
Battery Type: Lithium battery
Battery Capacity: 20,000mAh / 74Wh
Maximum Output: 45W
Rapid Recharge: Up to 30W stated in the product information
Ports: 2 USB-C and 2 USB-A
Number of Outputs: 4
Number of Inputs: 2
Input Interface: USB Type-C
Output Interfaces: USB Type-C and USB-A
Fast-Charging Support: Two-way quick charging
Display: Digital battery-level display
Shell Material: Plastic
Colour: Black
Certifications: CE, FCC, UL, RoHS, WEEE and PSE
Travel Information
The stated battery energy is 74Wh, which is below the common 100Wh limit for passenger air travel.
Power banks must normally be carried in hand luggage and should not be placed in checked baggage. Always confirm the latest requirements with your airline before travelling.
Package Contents
1 × NOBIS N4520 45W Power Bank
1 × Charging Cable
1 × User Manual
1 × One-Year Warranty
USB-C wall charger not included.