Using this battery is simple. Just insert it into your compatible device with the correct polarity. When charging, make sure to use a charger suitable for NiCd batteries to ensure a fast and safe charge. Remember, don't overcharge the battery as it can reduce its lifespan. Also, avoid exposing the battery to extreme temperatures, both hot and cold. To maintain its performance, use it regularly and don't let it sit idle for long periods. If you notice any swelling or damage to the battery, stop using it immediately and replace it.