First off- I did a search and all I found was information on whether or not a cordless impact wrench can be used for removing blades. My question deals specifically with the DeWalt brand rather than a cordless impact wrench. I am looking to buy one of their wrenches and see two different models of battery on eBay. One has the XR+ while the other has the XRP battery units. I have searched the DeWalt website and all I see is that the XRP units are "40% stronger than regular batteries." Is the XR+ a "regular" battery? I can't find a side by side comparison of these two. It appears that the XRP is the only line carried by DeWalt now. Does anyone use either or both of these batteries on either cordless impact wrenches or any other DeWalt tool? If so what is the difference, if any? The XRP batteries have the yellow top if that helps. Thank you!