The Sandberg Nano Powerbank 20000 PD20W (item 421-40) is a portable battery for charging devices away from a fixed power source. Its Li-ion battery provides 20000 mAh, with a rated voltage of 3.85 V and an energy capacity of 77 Wh.
USB-C and USB-A outputs let you connect devices with either port type. USB-C output supports up to 20 W, and the USB-C input supports up to 18 W for recharging the power bank. The display shows the charging status.
At 10 × 6.9 × 2.85 cm and 330 g, its listed size and weight describe what to expect when carrying it.