[Intelligent battery indicator light] 1. When the battery is in working state, the green light is always on. 2. The battery is in charging state: the yellow, green, and red lights flash alternately. After being fully charged, the light goes out. 3. When the battery temperature is too high, the red light flashes.
【Safety & Durability】- Smart chip included for protection against over-charging, overheating, short-circuits, current overloads, and overvoltage, extending the lifespan of tools by preventing excessive usage.