Currently in full testing of these little things that are today completely indispensable. Duracell is in itself a guarantee of quality but it's true that it's better to test, it's very easy to use, simply insert them into the Duracell charger !!! These batteries are ideal for any type of remote control, or there but we need intensively parents what we are playthings for our children !!! So I tried on one of the games of my daughter particularly greedy and after 2 weeks no complaints, the game still works perfectly which was not the case with my old rechargeable batteries. The batteries have a 3-year warranty which is not bad at all !!! I recommend therefore