... As stated in the title: keep the charge of incomparable way from the usual batteries. I can walk for several weeks without a problem batteries in reserve and they meet there when I need ais. If the capacity appears smaller 2000 mAh compared to 2600 mAh of others, use it really does not see. I guess the discharge curve must also be improved: increased internal resistance signaling the end of discharge postponed further. So that we can "pull" over high current to the last electron when tension "other" decreases the intensity too call. Anyway on a camera can feel the difference: 20% photos and more, and the same length of video seizures when used like this ... Given the quality, I finally invest in a "smart charger" which manages very well the charge cycle that I do not choose too short anyway, so I'll keep them for long. I have over two years running on a camera used daily for my work and who have undergone ~ 300 charge cycles (but only a hundred with intelligent charger). It's hard to say it like that but the ability does not seem much to have been initiated, and in any case, they are robust. When I compare with the previous batteries were not, however, "first prize" (and perhaps abused by nag sold with charger and I used to start with the Eneloop), the difference is obvious. I never saw the Eneloop store. The day it happens, other brands will have trouble to do, huh ...