The heatsink keeps the Pikos performance on maximum level for a longer period of time when the lamp can't be cooled down naturally.For example when there is little to no wind when cycling or the lamp is used in closed rooms.
With the USB ONE you can charge USB devices from the Lupine battery. E.g. you can charge our ROTLICHT from the Lupine battery.Output: 5V/1.5A
Input: 7.2V and 14.4V Lupine batteriesThe USB ONE is not made to charge the Lupine battery!