# Battery charge indicator on the adapter

The LEDs on the battery charge indicator on the adapter indicate the state of charge of the battery. After the battery is inserted, the battery charge indicator on the adapter will light up for 3 seconds. While the battery adapter is in operation, the battery charge indicator on the adapter will light up continuously.

LED | State of charge
--- | ---
3 × continuous green light | ≈ 75–100 %
2 × continuous green light | ≈ 40–75 %
1 × continuous green light | ≈ 15–40 %
1 × slowly flashing green light | ≈ 0–15 %