I got hold of 16 of the 7 day shop's alleged own brand AA batteries - they are called 2900 which sort of implies that they are 2900maH but if you read carefully they are 2700maH. I charged mine up and put them in my flashguns. I have a Metz 58 AF2 mounted on the camera set to manual and I also have two old Vivitar 285's on optical sensors. The Metz is directed straight to the ceiling and the 285's are mounted on small tripods and can be moved around and I sometimes set one of them to half power - sometimes a quarter. With the 7 day shop batteries fully charged the recycle time was the fastest I have ever known and I took over 150 shots before they even looked like slowing down. After a recharge they were brilliant again. I do not know how many charges I will get from them but so far I have to say I am very impressed.