Using this BetaFPV battery is easy. First, make sure your device is turned off. Then, connect the battery to your device using the JST - PH2.0 connector. When charging, use a compatible charger and follow the charging instructions carefully. Don't overcharge or over - discharge the battery. Store it in a cool, dry place. If you notice any swelling, leakage, or other issues, stop using it immediately and replace it. With proper care, this battery will serve you well for a long time.