I am currently ambassador for the site "want more", and thanks to that I tested for several days the Duracell charger 4:00 and batteries associated with it ... Father of 3 children, aged 7 days, 2 years and 10 years, the batteries are part of my daily nya since not a single day where I'm not forced to change those of a new device. My battery budget is quite high and this despite the fact that I tried different types of charger and rechargeable batteries quickly ... Unfortunately I was disappointed because the batteries do not hold load or it took 24 hours to charge the actually ... In short, when I heard about the new Charger Duracell 4:00, I was skeptical at first but now after several days of use (and daily refills), I am totally satisfied and I ' I even bought more batteries to equip with all the toys of my children .. Indeed, recharging is done extremely quickly but especially the batteries have a real charge and are not left empty at the end of one hour !!! I am totally satisfied and I would definitely suggest this product that will become essential to you ...