There are buttons on the battery pack. You can press the button to confirm the remaining charge by the 4 LED display.
During Use
battery level 100%: Press the battery level display button, and four indicators will remain
on for 20 seconds and then go off.
75%–100%: Press the battery level display button, the four indicators will remain on for 10 seconds and then go off.
battery level 50%–75%: Press the battery level display button, and three of the four indicators will remain on for 10 seconds and then go off.
battery level 25%–50%: Press the battery level display button, and two of the four indicators will remain on for 10 seconds and then go off.
battery level 0%–25%: Press the battery level display button, and one of the four indicators will remain on for 10 seconds and then go off.
During Charging
battery level 100%: The total four indicators remain on for 20 seconds and then go off.
battery level 75%–100%: Indicators 1, 2, and 3 remain on, and indicator 4 blinks.
battery level 50%–75%: Indicators 1, and 2 remain on, and indicator 3 blinks.
battery level 25%–50%: Indicator 1 remains on, and indicator 2 blinks.
battery level 0%–25%: Indicator 1 blinks.
During Use
battery level 100%: Press the battery level display button, and four indicators will remain
on for 20 seconds and then go off.
75%–100%: Press the battery level display button, the four indicators will remain on for 10 seconds and then go off.
battery level 50%–75%: Press the battery level display button, and three of the four indicators will remain on for 10 seconds and then go off.
battery level 25%–50%: Press the battery level display button, and two of the four indicators will remain on for 10 seconds and then go off.
battery level 0%–25%: Press the battery level display button, and one of the four indicators will remain on for 10 seconds and then go off.
During Charging
battery level 100%: The total four indicators remain on for 20 seconds and then go off.
battery level 75%–100%: Indicators 1, 2, and 3 remain on, and indicator 4 blinks.
battery level 50%–75%: Indicators 1, and 2 remain on, and indicator 3 blinks.
battery level 25%–50%: Indicator 1 remains on, and indicator 2 blinks.
battery level 0%–25%: Indicator 1 blinks.