Using this battery is easy. First, open the key fob carefully. Then, take out the old battery and replace it with the CR2032-1HFE battery, making sure it's placed correctly. Close the key fob. When handling the battery, avoid dropping it or exposing it to extreme temperatures. Don't try to recharge it as it's not rechargeable. Keep it in a dry and cool place. If you're not using it for a long time, store it properly. This way, your battery will serve you well and your key fob will work smoothly.