Originally Posted by godneps
But then you need to have BT on all the time and even with some extra battery power hidden away in the keyboard that'd be a power killer no?
BT is almost unnoticeable on the battery economy of a big sized android phone.
A keyboard does way less traffic than a BT headset, so way less battery consumption.
Th BT keyboard goes automagically in sleep mode when it's closed.
And, if you are picky, you can turn OFF the BT on the phone with a simple Tasker rule. (tasker is needed anyway to automate the screen rotation, the screen unlock when the keyboard is slided out and so).
If the above is not enough for you, I must add that the keyboard backlight, unlike a native one, is powered by its own battery.
So, the short answer to the question is absolutely not