The LED indicator is located on the top cover of the battery and it informs the user about the battery charge level and the operating status of the entire system.

After the power is turned on, the indicator first lights up for 4 seconds, providing information about the battery charge level:
• green, steady: 75%-100% charging capacity
• green, blinking: 50%-75% charging capacity
• red, blinking: 25%-50% charging capacity
• red, steady: less than 25% charging capacity