Specifications:Chemistry: Li-Ion Voltage : 3.7V Capacity : 1000 mAhCompatible Replacement Battery for: HP 310798-B21, 311949-001, 35H00013-00Compatible with the Following PDA: HP SDPDA-L6516, 310798-B21, 311949-001, 311949-001, 35H00013-00, 35H00013-00, iPAQ 2100, iPAQ 2210, iPAQ 2212, iPAQ 2212e, iPAQ 2215, iPAQ h2100, iPAQ h2210, iPAQ h2212, iPAQ h2212e, iPAQ h2215, iPAQ PE2050x