[boonkang]

I have similar problem with the battery.
I bought my ME2 used and it was charged somewhat when I received it.
I played for a day, I coauld turn it on next day but couldn't get into any function (even the system settings).
I then used the wall-plug to charge (wit the device turned on). Both red and green lights were on but green light turned off moments later (nothing showed up on screen), I let it charged for 5 hours (accroding to instruction book).

I could now get in the "play music" function for a while. Once I got out from "paly music" function I couldn't get in again.

I decided to use usb charge from Computer, this time a figure of empty battery showed up and flashing. About 5 or 10 minutes later the empty battery changed into solid battery and slow flashing.

I'll let it charge for another few hour to see if the solid battery will stop flashing.
Anyone understand this charging process ?