After my experience with a few different brands of pre-charged Ni-MH batteries, I’ll not be going back to regular Ni-MH rechargeables.
When I first saw these batteries on sale, the first thing that came to mind was “Why would someone pay more for pre-charged batteries instead of just buying the cheaper ones and recharging the batteries before first use?” However, it was not until it hit me that the only way these batteries could be sold pre-charged is if they held their charge. For comparison, regular high capacity Ni-MH batteries lose their charge after just a few months, even if not used over the period.
One other nice thing I found with pre-charged batteries, which I’m sure includes these enloops is that they provide higher current than regular Ni-MH batteries. For example, in my DSLR flash, they recharge the flash in about half the time of some of my other regular Ni-MH batteries. Also, as I only use my flash occasionally, I no longer have the issue of taking out the camera and finding that the batteries have gone flat.