Ok in that case you can try charging your phone using flasher...maybe it has lost the battery reserve power too...

What you can do is just input the commands for a flash:

flasher -f -F rootfs.bin

If your device gets detected and has lost its reserve power, a message will pop up that the phone is charging...at 11% of battery, flashing commences so just plug it out at 10% and then use a wall unit to charge it...

this is similar to giving the n9 a kickstart...