Using this CNHL Lipo battery is easy. First, make sure you connect the output connector (XT90) and the balance connector (JST/XH) correctly to your device. When charging, don't exceed the 5C max charge rate to keep the battery safe. Store the battery in a cool, dry place. Avoid dropping or hitting the battery as it can damage the internal structure. If you notice any swelling or strange smell, stop using it immediately. For long - term storage, keep the battery at around 50% charge level. This will help maintain its performance over time.