Replacement battery suitable for Schnurlos telephone Siemens:Siemens T349 blackTechnical specifications (no original rechargeable battery):System: NiCd rechargeable batteryVoltage: 4.8 Volt Capacity: 600mAhDimensions LxBxH: 71x57x19mmWeight: 107 GrammQuality rechargeable batteries consisting of brand name batteries e.g. AccuCell, Panasonic, Toshiba, Sanyo etc.