As part of a project of the Cercle des Ambassadeurs, I was selected to test the charger DURACELL HI-SPEED 4:00 and AA & AAA batteries with other 499 ambassadors. After 10 days of use I just give my opinion (small clarification, I'm certainly not advertising for Duracell I nai no contact, my opinion is objective, honest and sincere). The batteries charge well into a maximum of 4 hours, it's still a very reasonable load times. Japprécie that this is also the batteries are equipped with the technology Duralock which keeps the energy of it which when not in use and can remain charged for 6 months (80% after one year) AWESOME! Jai positioned three AAA batteries in a bedside lamp has 3 LEDs (lon scratch small lamp that has support on the amount of a bed) after a dune time every night using the batteries held a little more than a week, this is very correct! Otherwise jen also used in the remote control of my Smart TV (where we will have to wait longer to get feedback on consumption). I will now try with my camera. For now I havent nothing to say about the product.