So, if I understand you, you just want the battery cover, and your front bezel/sides of the phone are all OK? I looked on cnn.cn, and all they have is the full set of the front cover, digitizer and back cover (
http://cnn.cn/shop/p3050-touch-6900-...c-277_565.html). You could try emailing cnn.cn and asking if they will sell just the battery cover, or you could buy the whole thing and either have spare parts or resell the front parts!