I don't know, but it seems like there is a problem with your Shift or CapsLock key.

You could follow gazza_d's advice to improve your battery life, or if you search there are many threads discussing how to improve battery life. I suggest reflashing and being careful which apps you install, your battery life depends on how you use it, if you use it like a pocket computer, expect battery life comparable to a computer, if you use it like a phone, you should get several days out of it so long as your battery is okay and you don't have any misbehaving apps installed.

But there is a secret command you could try to activate a special low power mode when you aren't using it, as root run the command "halt", it will use virtually no power in this mode, but you won't be able to use any apps in this mode (or make phone calls, but who wants to do that).