The Sandberg Hand Crank Powerbank 20000 mAh offers you a powerful portable battery with which you can charge all your mobile devices. In addition to the functionality for charging smartphones and tablets, it has a large built-in light and a penetrating flashlight. When you are far from a power outlet, you can use the built-in crank to generate electricity to manually charge the portable battery. Practical carrying handle.

In the packaging:
1 Handheld rechargeable battery 20000
1 USB-A to USB-C cable 1 meter
1 USB-C to USB-C cable 1 meter
1 Quick Guide

Specifications:
Capacity: 20000 mAh / 74 Wh
Battery type: Lithium-Ion
Supports energy transfer through the device
Hand generator: 5V/1A (5W) at 180 RPM
Input USB-C port 1 PD: 5V/2A, 9V/2A, 12V/1.67A (max. 20W)
Output USB-C port 1 PD: 5V/2A, 9V/2A, 12V/1.67A (max. 20W)
USB-C port 2 output: 5V/2A
USB-A output 1 (blue): 5V/2A, 9V/2A, 12V/1.5A (18W QC 3.0)
USB-A output 2 (black): 5V/2A
USB-A 1+2+USB-C output: Total balanced load max. 20W
Flashlight with 2 different brightness levels
Flashlight with 3 different brightness levels
SOS function
Operating temperature: -10 to +45 degrees C

Same summary

Sandberg Battery Powerbank 20000 is designed primarily for users who often need reliable power for their phone or other small devices on the go, without access to a socket. Due to the 20W output power, it is also suitable for faster charging of modern phones, but does not reach the power that would be necessary for laptops or larger devices. Despite the robust capacity, you should consider a slightly higher weight compared to smaller models - so it is best suited to users for whom longer autonomy outweighs compactness.

Recommendation source: Enaa guides and team experiences.

User view

This type of power bank is most often used by those who are on the move a lot – on trips, longer trips, festivals or in the daily rhythm between work and school. It is also practical if you often find yourself without access to electricity, but at the same time need the ability to charge your phone multiple times, without worrying about running out of power before the end of the day. Users also appreciate when reliability and convenience complement each other – for example, when you choose a battery status indicator or multiple outputs for charging two devices simultaneously.

Sandberg's offering stands out due to its proven quality and expanded product selection, which is regularly confirmed by Sandberg brand users who are looking for practical and reliable solutions in the field of powering mobile devices.

Why buy at Enaa

At Enaa you can expect a carefully selected range of power bank batteries, where key features are related to practicality, quality and proven usability. Updated information and clear markings regarding capacity and supported devices help you make your choice, making it easier to find the most suitable solution for your needs.

Answers to frequently asked questions

How many times can I charge my phone with this battery?

The number of charges depends primarily on the battery capacity of your phone, but you can charge most modern smartphones with a capacity of around 4000 mAh up to five times before the power bank is empty.

Is the Sandberg powerbank also suitable for tablets?

Due to the 20W output power and 20000 mAh capacity, the power bank is also suitable for most tablets, as long as they support USB charging.

Is this model too heavy to carry in a bag or backpack every day?

Compared to smaller power banks, this model is indeed a bit heavier, but for most users, the increased weight and larger capacity do not pose an obstacle to everyday use, although it is not the most suitable for pocket carrying.

How is the reflector on this battery used in practice?

The built-in spotlight comes in handy when camping, walking in the dark, or as an auxiliary light in emergency situations, as it is very easy to turn on via a separate button on the housing.

Can charging two devices at the same time result in slower charging?

If you charge two devices at the same time, the output power is divided between both ports, meaning the total charging speed may be slightly slower than when charging a single device.

Description updated: April 2026