Using your DeWalt 20V MAX Starter Kit is easy. First, insert the 20V MAX* DEWALT POWERSTACK™ Compact Battery into your DEWALT 20V MAX* tool. Make sure it's securely attached. When it's time to charge, use the included DCB112 12V/20V MAX* Charger. You can mount it on the wall for easy access. Just connect the battery to the charger and plug it into a power outlet. Keep an eye on the LED fuel gauge on the battery. It shows you how much charge is left, so you can plan your work and avoid sudden stops. When not in use, store the battery in a cool, dry place. Avoid exposing it to extreme temperatures or moisture. If the battery or charger gets dirty, you can use a dry cloth to clean it. Don't use any harsh chemicals or abrasive materials. Also, make sure to use only genuine DEWALT chargers and batteries to ensure safety and optimal performance.