The DC-50 has two sets of lights, one at both ends of the product.
The row of 4 lights indicates the available power in the battery: 25% (one light), 50%, 75%, and 100% (4 lights). To see the battery status, press the power indicator key. The lights also show the charging progress by blinking steadily.
The single light indicates phone charging status:A continuous light means that the phone is charging.One long blink means the battery of your phone is already full.Quick blinking means that there's a problem in charging, for example, a metal object on the plate.