Powerbank Cuktech 300W 40000mAh with wireless charging, 2× USB-C, 2× USB-A — black

The Cuktech 300W 40000mAh powerbank in black is a high-capacity portable battery designed to deliver extended runtime for smartphones, tablets, laptops and small appliances. It offers multiple wired outputs including two USB-C and two USB-A ports plus built-in wireless charging for compatible devices. With a rated maximum output of up to 300W, the unit is intended to support fast charging of a wide range of devices and to serve as a reliable backup power source during travel, fieldwork and power outages.

Advantages

This powerbank combines large battery capacity with versatile charging options: two modern USB-C ports for high-power devices, two USB-A ports for legacy devices and a wireless charging pad for convenient cable-free recharging. The high 40000mAh capacity reduces the need for frequent recharges of the powerbank itself, while the 300W maximum output enables charging of power-hungry devices such as some laptops and multiple devices simultaneously. The compact black design is practical for transport and storage.

Suitable for

• Charging smartphones and tablets on long trips or during daily use
• Powering laptops and USB-C devices that accept high-watt charging
• Supplying backup power on job sites, outdoor work, and field assignments
• Emergency power during short outages or when mains power is unavailable
• Charging multiple devices at once using a mix of wired and wireless connections

When it may not be suitable

The powerbank is not intended as a permanent replacement for mains power and may not support continuous operation of high-draw appliances that exceed its rated output. Some laptops or specialized equipment may require specific charging protocols or connectors not provided by this unit; compatibility should be verified before relying on it as the primary power source.

Key specifications

• Battery capacity: 40000 mAh
• Maximum output power: up to 300 W
• Output ports: 2 × USB-C, 2 × USB-A
• Wireless charging: integrated wireless charging pad for compatible devices
• Color: black

How to use

Charge the powerbank before first use using an appropriate high-power charger connected to a USB-C input if available. Connect devices to the desired USB-C or USB-A output port to begin wired charging; the unit will manage power distribution and deliver up to its rated maximum. For wireless charging, place a compatible device centrally on the wireless pad; ensure device wireless charging is enabled. Observe device charging indicators and disconnect devices when fully charged. Follow the manufacturer's instructions and safety markings on the product for proper ventilation and handling.

What to consider before purchase

• Confirm device compatibility with USB-C charging profiles and maximum power requirements
• Check whether your laptop or high-power device accepts charging from an external powerbank
• Consider the unit's physical size and weight relative to travel or field use
• Verify wireless charging compatibility and required positioning for your device

Usage recommendations

For efficient operation, charge the powerbank using a high-power USB-C charger, avoid exposing the device to extreme temperatures, and use high-quality cables for high-wattage charging. To maximise service life, avoid deep discharges and store the powerbank partially charged if not used for extended periods.