Replacement SK37H1-D, HBPX100-M, CPH-526 Battery for Avaya 3626, BPX100, Nortel NTTQ5010, NTTQ5050, WLAN 2211, Spectralink BPX100, I640, PTX110, PTX151, RNP2400, Polycom PT X150, Alcatel Mobile IPTouch 600 Cordless Telephones MPF Products Replacement for the following Battery Model/Part Numbers: SK37H1-D, HBPX100-M & CPH-526. Compatible with the following telephone models: Avaya 3626, BPX100. Nortel NTTQ5010, NTTQ5050, WLAN 2211. Spectralink BPX100, I640, PTX110, PTX151, RNP2400, Polycom PT X150, Alcatel Mobile IPTouch 600. 3.6V 750mAh 2.7Wh Ni-MH Battery. 1 Year Replacement Warranty. MPF Products is a Registered Trademark.