I guess the original "wave off" comment was too obscure. Lest I remind you that you've dredged up a thread that's been dormant for 4-5 months, my original post was from the days back before I knew Daniel Browning was on the forums, at which point we all had to be technically accurate down to the word or he'd come through and pick apart your posts. Not that he's often (if ever) wrong, but I've given up trying to split hairs because he's got skill in cosmetology as well as optics. I have a bachelor's degree in electrical engineering, and I didn't need your technical rendition above.


Except to say, different batteries have different internal resistance, and that influences how much current they can deliver to a particular load. I think we can all agree that a speedlite is a far different load than a flashlight, and therefore presents a dynamic load to the battery string. Those differences inside the batteries can change how much power the batteries can deliver to the flash, and therefore change how fast it recharges, though there's not necessarily a correlation with the battery's charge rating.