I bought this keyboard in March 2013, and I was immediately impressed. Fine, nice strikes, fed by my desk lamp (lit when I am in front of the screen) brief happiness. I was wary of a little life of the battery, especially given my heavy use, but I took care to put it out as soon as I was using it more. When i passed the bar six months of use without any problems (which seemed inevitable given the comments), I thought it was THE key. And bam, in November 2013, without changing any of my habits (light or use), nothing: empty battery in the morning, while the keyboard was still charged the night, and turned off at night. I follow the recommended steps on the Logitech forum, load it all for a day in the sun, to no avail: the battery reaches 25% winded charging and emptying at unbelievable speed
The Logitech customer service was very efficient, certainly, but the bitter experience remains a least not be afraid to break down the door of the battery to the back of the keyboard, there is no way to change the battery in case of failure, and it is to my taste a very very big gap. (I went from a K290 that works great, but I still regret the comfort of K750)
