Compatiable with Ryobi 40V lithium-ion tools RY40200 RY40403 RY40204, fit for original Ryobi 40V battery charger OP401 OP403, may not compatible with OP408VNM charger.
Built in multiple protection protects battery from over current, short-circuit, overheat and over voltage damage. LED Indicator to check battery level easily.
Worry Free Service : 45 days money back and 12 months replacement warranty, please feel free to reach out with any questions or advices.