Using the DeWalt DCB094K Charger and USB - C Adapter Kit is easy. First, plug the 65W power supply into a power outlet. Then, connect the charger to the power supply using the 100W USB cord. To charge your DEWALT 20V MAX or FLEXVOLT® battery, insert it into the charger. For personal devices, you can use either the USB - C port for high - power charging up to 100W or the USB - A port for up to 12W charging. When using the belt hook, make sure it's securely attached to your belt. As for maintenance, keep the charger clean and dry. Avoid exposing it to extreme temperatures or moisture. If you notice any damage to the charger, cord, or power supply, stop using it immediately and contact DeWalt for assistance. Also, always follow the safety instructions provided in the user manual.