Compact 20000 mAh Power Bank with 20W Power Delivery. The Sandberg 421-40 Lithium-Ion 20000 mAh Black Power Bank offers ample energy in a handy format. With a capacity of 20000 mAh, a smartphone can be charged multiple times. Thanks to USB Power Delivery with up to 20 W, charging is particularly fast and efficient. The compact casing measures only 69 × 100 × 28.5 mm and fits into any bag, while its light weight of 330 g is barely noticeable. Both USB-C and USB-A outputs allow simultaneous charging of two devices. The integrated display precisely shows the current charge level. With the included 15 cm USB-C cable, everything stays together. Universal compatibility makes the Sandberg 421-40 Lithium-Ion 20000 mAh Black Power Bank the ideal companion for on the go. - Battery type: Lithium-Ion (Li-Ion) - Battery capacity: 20000 mAh - Detail color: Black - USB charging ports (Output): 2 - USB-C PD: Yes - Max. Output USB-C PowerDelivery: 20 W Sandberg 421-40, 20000 mAh, Lithium-Ion (Li-Ion), 3.7 V, Black