Excerpt: Does not hold a charge unless light is constantly shining keyboard. Unless you live where you have a lot of sunlight I would against this particular keyboard. I have to have the desk lamp on all the time when using computer. If I have to purchase another wireless key board I would one required batteries.
Summary: Bought this from a major wholesale company about a year ago. We really loved both the mouse and keyboard and felt it was worth the money spent. Recently, though, the mouse has started acting up. It'll navigate the cursor but won't select anything. There's no clear solution. Sometimes we have to turn it off & on, unplug the USB, just wait a while, do nothing - all of the above work at various times and fail at others.
Summary: I purchased this keyboard approximately 1 week after getting my first iMac. I struggled wight he keyboard as I noticed some keys didn't seem to be working. After researching the internet and Logitech's site, I discovered the issues were based on this keyboard being designed for a USB 2.0 and not a 3.0. And since my new iMac had 3.0, this is why it don't work. I took the keyboard back to Best Buy and explained what I had discovered to the Apple Rep there.
Summary: Great keyboard, EXCEPT FOR THE ENTER KEY ON THE KEYPAD. I've tried two of these keyboards, the enter key broke off of both of them. It's the main key that I use throughout the day at work with the system we use. And it's not like this happens after a year or two, it happens after a month or two. Unfortunate, because otherwise I really like it. Going to try the K800. But this one is their only solar keyboard, which I really like.
Summary: I've generally liked this keyboard for the just under two years I've owned it, even though it doesn't have a Caps Lock (or Num Lock) indicator, which is an unbelievably annoying design oversight. But now the battery won't hold a charge for more than a day or charge to more than about 95%, even if I leave it in direct sunlight for hours. If Logitech would add indicator lights and a decent long-life battery, this would be a killer keyboard.
Summary: I bought this keyboard because the idea of never having to charge it or replace batteries seemed naturally appealing. The keys are very good and it is very comfortable to type on and I also liked the array of secondary functions on some of the keys. However, that's where the good points end. The keyboard drains the battery faster than it should, even in a well lit room. It also charges slowly and VERY inconsistently, again even in a well lit room.
Summary: It does what it says as far as not needing a battery, I had no trouble with it working and holding a charge. The keyboard however has lots of problems. Primarily is the shoddy workmanship and quality of the keys themselves. I took it right from the box and set it on my desk. The first day the plus sign key came completely off. Although It fit right back on the materials seem very cheap. Also the 1 button became stuck somewhere in the first week.
Summary: Bought the keyboard, in Jan 2011, to use in the office. When I received it, the '2' key on the num pad would not work. I contacted Logitech and they sent me a new one. Jump ahead to Aug of 2013, the left 'Alt' key stopped working. Now, November, the keyboard wont work at all. You cannot replace the battery, so I'm stuck with a dead keyboard. Skip the solar power gimmick and buy a replaceable battery model.
Summary: This is my second solar keyboard purchased from Logitech. I absolutely loved the first one....that is until it broke after the first year. Unfortunately I did not have a receipt and was unable to return it. I purchased a second solar keyboard and found it to be extremely loud when typing; very much unlike the first solar keyboard I purchased. Needless to say I was very disappointed with the second purchased solar keyboard.
Summary: I am a medical transcriptionist and have come to love Logitech keyboards. I have to have a new one about every 6 months. I bought the solar keyboard this time because I liked the low profile keys and quietness, but I absolutely cannot keep it charged for 8 hours and sometimes more per day. It is fine for other use, I suppose, but not for my needs.