Using your DeWalt DCB2460C starter kit is easy. First, insert the battery into the charger and plug the charger into a power outlet. Wait until the LED indicator shows a full charge. Then, you can insert the fully - charged battery into your 20V MAX* tool, like the included grinder. When using the grinder, always wear safety goggles and gloves. Make sure the tool is firmly held before starting. For battery maintenance, keep the batteries in a cool and dry place. Avoid over - charging or completely draining the batteries, as this can reduce their lifespan. If you notice any damage to the battery or the tool, stop using it immediately and contact DeWalt's customer service.