4 signs that you may have bought a fake power bank

A $40 power bank with a 500,000mAh capacity sounds too good to be true, right? That's because it's not, even though listings at some sketchier online stores might want you to believe otherwise. Fake power banks are still around, offered by unscrupulous sellers trying to make a quick buck. Counterfeits pretend to be brand-name products and to support features they don't have. They often exaggerate their capacities, claiming to match the energy reserves of the best portable power stations.