MP-301 3.6V 450mAh Universal Cordless Telephone Ni-MH Battery Black and Blue is used in cordless telehpone only， and should only be charged from within your cordless teltphone. No outside charging methods should be used.                                    Features            New battery<br>High quality and durable<br>Provides excellent continuous power sources to your device<br>High energy density， long life battery<br>This battery has an extra long life for all your battery powered devices<br>                                                            Specifications                    Type          Panasonic siemens phone picture-machine universal Ni-MH rechargeable battery        <br>      Capacity          450mAh        <br>      Voltage          3.6V        <br>      Color          Black-Blue        <br>                                                              Package Includes            1 x MP-301 3.6V 450mAh Universal Cordless Telephone Ni-MH Battery Black and Blue<br>