1 light = 25%, 2 lights = 25-50%, 3 lights = 50-75%, 4 lights = 100%. Low Current / Trickle Charging Mode:

She carried the device home, the manual fluttering in the breeze like a secret. The PBY37 had a small multi-function dial, a row of LEDs, and a USB-C port that hummed faintly as if remembering its last charge. Mara’s apartment filled with the warm tang of dust and possibility as she smoothed out the manual and began to read.