Before first use, they should be charged only once best. As long as it loads and will turn red (power button), it is full the LED will go out (charging time approx. 2 hours).
According to the manual it is several weeks (operating period 40Std.) Hold as it automatically, if you do not use 15min, goes into a sleep mode. With the press of any button wakes it up again. The lithium battery is permanently installed.
Connecting via Bluetooth is not quite as simple as using one or the other device. First you have to turn on the keyboard. These hold a little longer the button. Then one more time press the button briefly to activate Bluetooth. Unfortunately, this does not always work immediately and instantly. You have to be patient. But it is. We have them connected to an Asus laptop with Win8.1, a Lenovo Yoga Tablet and a Huawei-Honor6 smartphone.
In addition to writing, you can also use many functions depending on how they are supported. One can only try. I could, for example with IE open the browser window and proposal with the magnifying glass in the search Google Store. In addition to the tablet with videos see make loud and soft.
However, it could come to problems with the keyboard layout. If nothing is set, the German you have to do it manually. That worked when cell phone super easy and fast. Only one tablet does not unfortunately. In the settings me only 5 further proposed in addition to English and German, there is not, unfortunately. But that is not the tablet to the keyboard.
The letter also works well. The pressure point is okay. Only now and then he takes a letter times not because I probably - spoiled by my smooth the laptop too little overprints.
What me a little lacking in operation is an LED, so that I can see if your keyboard is on and works or has shut down. Was certainly the case resolved to save power.
Conclusion: If you are familiar and a little patience for the keyboard is really good. One has but to try a little and, thanks to the variety of connected devices that make one or the other setting. But then it works very well, whether on your desk or on the move. It is very fast and the built-in battery lasts really long.