LG enV2 (VX-9100)

I am having these same issues, but with a Motorola H710 bluetooth. The H710 links up just fine With my Blackberry. When I do get the Env2 to link up to it, it won't stay linked. It sometimes will show that is still linked, but if I try a call, it won't recieve or transmit through the bluetooth. When it is connected, I hear an intermitant drop out while talking. Also the battery has become unpredictible at the same time.Could a weak cell in the battery cause the phone to momentarily cut in and out?