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If the Bluetooth keyboard is built-in lithium battery, it needs to be charged.
Not if the battery can be changed.
Bluetooth keyboard is the use of Bluetooth technology keyboard, wireless digital devices, all have batteries. If the keyboard is built-in lithium battery, then the use of lithium battery and mobile phone is the same, are the first three times the charge time is slightly longer, usually with the charge can be used.
This and Bluetooth keyboard or infrared keyboard is not off, this is the basic use of lithium battery specifications, universal.
Bluetooth keyboard refers to wireless transmission through the Bluetooth protocol, in the effective range of Bluetooth communication keyboard.