A Seller on Ebay is selling XD and XD+ Batteries. The XD+ has a 3rd Wire to Monitor the Battery Temp. But in theory, if you Cut that Wire, and use the Old Battery's Wires/Connector for the XD+ Battery, it should work. Should just need Wire Connectors and some Heat Shrink Tubes to make sure it wont come apart, along with capping off the 3rd Wire. I have not dont this, but it should work, since they are exactly the same, except for Wiring/Circuit Board. Do so at your own risk.........CAREFULLY!!!!!!!!