Introduced this over a Black Friday presale was enthusiastic for the value and the capability but turns out not to have USB-C output. Possibly ought to examine the “fantastic print” closer… Finally, click the black button to activate charging and Look at the battery pack has charge. Pleasant and simple. https://allhealthmarket.com/product/computers/battery-charger/backpack-charger/solar-charger-backpack/new-3-25w-6v-outdoor-sport-solar-backpack-foldable-light-weight-solar-panel-charger-bag-for-traveling-hiking-with-power-bank/