I Love that these Rechargeable batteries. I love the fun colors of the batteries. I love not having tons of disposable batteries laying around. Or having g a good place to keep my rechargeable batteries. So the case they come in is a wonderful convenient storage unit for them. I Will definitely be buying the AAs when I need them. So far battery life is great as well. They are not charged when u purchase so make sure you have a charging device for them