Through the Circle of Ambassadors, I was selected to test the charger DURACELL HI-SPEED 4:00 and AA & AAA batteries. On the exterior, the charger is lightweight, it does not take up much space. By cons, unlike other chargers, you can not change the plug in the back to put a specific plug in another country. I've tested these batteries with children's toys, among others, and the fact that they are recharged in 4 hours is a blessing! The only downside is that you load the 2 or 4 or certain toys work with 3 batteries so it would have been nice to recharge batteries from January to April. The more is the fact that the batteries are charged even if you do not use and do not get home with all the kids toys! A product to recommend for its price / quality ratio!