I have no clue why, but for the past few days the battery on my A45 seemed to have seriously degraded. I can usually go for 3 to 4 days on a charge, but now I can barely manage two. Even the first bar which usually lasts over a day depletes in just 4 to 5 hours now. Anyone have an idea of what's going on? I've been using this DAP as I always have, and none of the settings have been changed prior to this.