I was torn between this and B grade, but for some reason A grade was cheaper, so I decided to buy it straight away. I don't know how long the battery lasts because I haven't checked it, but it seems to be a little fast. I don't know how much the guaranteed 80% is, so I don't know if it's like this or not :). I don't know how much 80% is guaranteed, so I don't know if this is how it is :) At any rate, I can use it normally, so there is no problem.
It was cheaper than buying a used one from an auction site, so I didn't have high expectations, but I was surprised that the unit was so beautiful and without a scratch that I thought it was brand new. The cord also came with it, so I didn't have to go out of my way to buy it, which was a big help. I am also satisfied with the crisp operation. I am very happy with the price and the one year warranty. Thank you very much for a good product. The packaging is also very good. I will be back here again when this one goes out of order.
