I had a purchased a cordless phone before one year ago. It was working very well till now. Really this phone features are good. I like it too much. But I have a problem with itís battery. Battery is not working properly. I didnít get the problem whatís happening with this phone. It is giving good performance whereas it charges fully. So I want to know that will it have to replace the battery or it is fixable? Please tell me the reason as much as possible. It is very necessary for me.