Gembird PB20-01 Power Bank 20000 mAh

The Gembird PB20-01 Power Bank 20000 mAh is a portable lithium polymer battery pack designed to provide extended power for phones, tablets and other USB-powered devices. With a rated capacity of 20000 mAh and a nominal voltage of 3.7 V, the unit stores substantial energy for multiple recharge cycles. The compact black housing combines a slim profile with practical portability, while a USB Type-C interface supports modern device connections and convenient recharging of the power bank itself.

Advantages

The power bank uses Lithium Polymer cell technology to achieve a high energy density in a relatively lightweight enclosure weighing approximately 0.41 kg. It offers dual-output capability to charge up to two devices simultaneously and delivers a maximum output current of 2.4 A for faster charging compared with lower-current portable chargers. Universal charger compatibility and a USB Type-C port make it compatible with a wide range of smartphones, tablets and accessories. The black finish provides a neutral, unobtrusive appearance suitable for everyday use.

Suitable for

Key specifications

How to use

Before first use, fully charge the power bank using the USB Type-C input according to the included cable and the charger’s specifications. To charge a device, connect it with a suitable USB cable to one of the power bank’s output ports. The unit supports charging of up to two devices at the same time; ensure combined current demands do not exceed the maximum output specification. Monitor device and power bank temperatures during extended use and disconnect when charging is complete. Recharge the power bank after use to maintain readiness.

Recommendations

Use a compatible USB charger and cable to recharge the power bank and avoid exposing the unit to high temperatures, moisture or mechanical shock. For optimal long-term performance, store the power bank partially charged if not used for extended periods and avoid complete deep discharge whenever possible.