Using the DeWalt DCB612 battery is a breeze. Just insert it into your compatible 20V MAX, 60V MAX, or 120V MAX tool. When the battery runs low, you can easily recharge it using any 20V MAX charger. Make sure to check the LED Fuel Gauge to know when it needs charging. As for maintenance, keep it in a cool, dry place. Avoid exposing it to extreme temperatures below 0°F or above normal ranges. If you're not going to use it for a long time, store it with a partial charge. This will help extend its lifespan and keep it ready for your next project.