Bought this from the seller, ordered it on Wednesday and arrived Saturday morning, very happy with the delivery times, added bonus it was free postage even to N Ireland.
As for the battery its works perfectly, I charged it and shot with it this afternoon in the studio to try it out, it charges in the Canon Charger and displays info on the camera, it even counts the shutter releases and displays the battery information, I checked and it had shot 800 images and was displaying that it had 63% left, this was on the 1st charge and its about the same as Canons own battery, I am very happy, as its approx 1/3 of the price of Canons.
I shall give an update if it goes pear shape, but as it stands, its works perfectly unlike the Ex-Pro battery that was more expensive and didn't work, had to return.
I decided to run the battery until it had 2% power left and checked the shutter count, the Battery had delivered 2387 shots in studio conditions, lens used for the test were Canon 50mm f1.4 and Canon 85mm F1.8, flash heads/strobes were triggered via Elinchrom Skyport trigger system, Raw and Jpeg small were captured and processed to sandisk cards, I am very impressed as the back LCD is switch on and I also spent time showing clients sample images from the shoots,
So still very highly remommended. :)