After a few months of sporadic use.

The battery holds enough charge to date brings about 3 hours in the rudimentary use as in the use of word processors and reading PDF documents.
Also it is sufficient as a rule, to watch a DVD movie in normal length.
Charging time is a few hours.
2 star deduction receives the battery that is now the notebook 2 times, than the battery on the 20% of the charge was dropped, is just crashed (power off, no blue screen!). I'll be watching the matter further and consider whether it is actually located on the battery.

Oh, the price is, of course, absolutely great!

** UPDATE **
The error still occurs, I will probably have to denächst contact to the seller.

** Update2 09.05.2014 **
For unfathomable reasons, for me the problem has probably eliminated by itself. The battery now seem to function properly. Even after a year, she still holds almost 100%! Thus, now it 5 stars!

** UPDATE3 31.01.2015 **
Okay, the battery is now already a lot older now and still holds the 88% to not more so sporadic use. As the price has now fallen even further, it is truly amazing how much power is on offer there.