Help, My C905 has died!

[#1]

My C905 has been playing up all day with battery.. A little red light on the left side of the phone was flashing despite having a full battery.. It then stopped sending my messages and receiving a signal. I turned it off and on 3 times and each time it took a chunk out of my battery life until it got down to 3%, I turned it off to charge it, but when i turned it back on, a notification came up on the screen saying "Serious Error. Stop charging your phone. Stop using your phone. Call a Sony Ericsson Call Centre." Why is this?! I have been nothing but good to this phone

[KrazyD]

Make sure that it does have full battery and update the phone using Sony Ericsson Update Service.