I bought this because I have a lot of rechargeable batteries and I do have a large battery charger but that is too bulky to carry around and take it with me when I'm away and I wanted something smaller that just charged 4 batteries at a time and this charger fits the bill perfectly I can charge 4 AA or 4 AAA batteries at a time which is great. The charger itself is small lightweight and compact it has a nice clear cover that goes over the battery compartment the cable supposed charges the batteries quickly Which is great.