For my nine Meca flash I still needed batteries with high power, that is why I have decided to field reports of other users on the Panasonic eneloops. They not only have a high output power, but are also suitable for fast flash sequences. This also the right charger is still included in the package, making it unbeatable for me. I'm going to buy to replace a few Eneloops individually, but I think I'm going in the evening did not make as much flash shots, as do the batteries :-)