Everything is said in the title. This charger is Magnificent. It allows among others in refresh mode "recover" the batteries that we believe damn !! Charger essential for any flash user as it ensures 100% of the battery capacity. A perfect mastery of the battery recharging individually and that being able to load either AA or AAA !!! Congratulations finally an intelligent charger that also allows for charging 1 or 2 or 3 or 4 batteries. In one word as in 100: Fantastic charger. If you have any hesitation or doubt about your future purchase, THERE MORE DOUBT, BUY IT. Delivered as usual on time. Congratulations Amazon