The XR sticker on your DCB206 battery means it’s part of DeWalt’s “eXtreme Runtime” series. Basically, these batteries last longer than the regular ones. They use better tech inside to give you more power and keep your tools running for a longer time before needing a recharge. Even though they hold more juice, they’re still light and fit just like any other DeWalt 20V Max battery. So if you see the XR sticker, it just means your battery is built to work harder and last longer on the job. It’s great for anyone who needs more time between charges.