This place sells rechargeable batteries mostly from Gold Peak Industries (GP Batteries) at a fraction of the cost of most major brands. If you've ever worked on any electronic devices that come with rechargeable batteries installed, you're probably familiar with GP; they're pretty much the industry standard for OEM rechargeable batteries. The GP batteries sold here will perform just as good as, if not better than the major brands that you'll find in most big-mart stores. They also sell GP chargers that include batteries, including a unique charger that is powered by USB ports. And of course, like any online battery store, they have special application batteries (coin, button, lithium, gel cell, camera, etc) and flashlights. They have the best shipping policy I've seen as well; 4.99 flat rate for orders under $50 and free shipping for orders over $50. Most online battery stores use bloated shipping rates to make their money, these guys don't.