The battery pack is equipped with a push button for checking the charge level. Simply press the push button to read off the battery charge level from the LEDs of the battery indicator:

• All 3 level monitoring LEDs are lit: Battery charge level is high.
• 2 level monitoring LEDs are lit: Battery charge level is decreasing. Stop discharge the battery as soon as possible.
• 1 level monitoring LED is lit: Battery is flat. Stop discharge the battery IMMEDIATELY and charge the battery. Otherwise the battery’s service life will be greatly shortened.