Using the DeWalt DCB205 battery is a breeze. Just insert it into your 20V MAX tool and you're ready to go. Keep an eye on the 3 - LED Fuel Gauge to know when it's time to recharge. When charging, use a compatible DeWalt charger. Don't expose the battery to extreme temperatures, like direct sunlight or freezing cold. To keep it in top shape, store it in a cool, dry place. Also, try to fully charge and discharge it once in a while to maintain its performance. If you notice any damage, stop using it right away and contact DeWalt support.