Using your DeWalt DCB2460C starter kit is a breeze. First, insert the 4Ah or 6Ah battery into your 20V MAX* tool until it clicks into place. If you're using the circular saw, make sure the blade is securely attached. To start the tool, simply press the trigger. When you're done, remove the battery from the tool to save power. As for the charger, connect it to a power source and then insert the battery. The LED indicator on the battery will show you the charging status. For maintenance, keep the batteries and charger in a dry place. Avoid exposing them to extreme temperatures. Regularly check the battery contacts for dirt or debris and clean them gently with a dry cloth. This will ensure your DeWalt DCB2460C kit lasts a long time and keeps performing at its best.