Abstract: A portable, cable free, industrial troubleshooting stroboscope includes a housing having a light source, a control circuitry, a display and a user control mechanism. A pair of power terminals internal to the housing connect to a removable power pack. One or more easily removable replenishable power packs with mating power terminals connect internally to the housing. Means used to directly replenish the removable power pack is in or out of the housing are also included.