Bicycle lights with Power Bank function for charging external gadgets

Power Bank function

— the flashlight’s ability to work in Power Bank mode—as an external battery for various portable devices, primarily smartphones and tablets.

Power Bank mode lets you charge portable gadgets from the bike light’s own battery. This can be a real lifesaver outdoors or on the road, when there are no outlets or other power sources nearby and you urgently need to charge a gadget (for example, a phone used as your main means of communication). Naturally, this charging uses part of the battery’s energy and reduces the device’s own runtime. However, models with this feature typically use rather powerful batteries with a solid energy reserve, and their runtime remains quite respectable even after operating in Power Bank mode.