A third-party camera battery may also be called “off-brand” or “aftermarket.” It is a camera battery made by companies that did not create the original battery. Each camera company makes a line of batteries to work with their cameras. Brands like Canon create their own “original” camera battery. And they're called. There is a mind-boggling array of third-party batteries, so we can't be exhaustive. Here are some of the best choices for the most popular camera. Over the years, I have bought third-party camera batteries. And I have had good experiences with them. But other users report problems. So, are off-brand batteries safe to buy? Do they work? Are they worth it? Let's find. The worst feeling in the world is holding a camera with a dead battery. You might own the most expensive digital camerain the world, but it is useless without a battery. These are some of the best third-party camera batteries.