If you prefer to have that extra pack of power with you wherever you go, then take the powerbank Charge 20 by BioLite with you. IPX6 certified the battery is protected from splash water by its lightweight stainless steel cover and the silicone gasket. You can see how much power is still inside the battery by taking a look at the 4 LEDs. When all LEDs are out, it's time to recharge Charge 20. Take the micro-USB cable that is part of this product and use it to connect Charge 20 to any USB charger or a BioLite power source.
The lithium ion battery provides you 20 Wh at 5200 mAh and 3,6 V. Its output is 2,1 A. The compact form takes up only 98 x 38 x 21 mm and weighs little more than a chocolate bar, 165 g to be exact.