Either large series dispersion or no idea why I so often need new batteries

Actually, the keyboard is quite useful ...
Size acceptable to take away in the backpack. The pressure point is for entertaining tap (chat and so) also practicable.
The keyboard is indeed very quickly in saving function, but that does not bother too much. As long as you write, everything runs. Otherwise, just press a button and then it goes to the next key before continue.

But the keyboard eats downright batteries. Apparently it is extremely sensitive to decrease in the voltage of the batteries.
Batteries performance ever at all. Sporadically, the keyboard can then connect, but lost again directly connect.
With various alkaline batteries I then the problem is that it works only once wonderful. After a few hours of use (they turn off course if I do not use), the behavior is as with batteries. Only timidly, mostly everything and then no longer connected to the tablet works.
If you make fresh batteries in, then everything is io for a few hours of use.

The "empty" but batteries are still usable for any device - only the keyboard spins around.

Have the problem with various devices had - Windows 8.1 tablet, Macbook Air 11, Android smartphone.

Conclusion:
Quite nice, but useless, because it is too sensitive to small decreases in batteries. Either serial dispersion or the manufacturer is sponsored by a battery manufacturer.

For the low price, I is the path to conversion to "consuming" (packing - go to the DHL shop, etc.). So is directly suitable for the "ton".