Ranking brands is different from ranking batteries, of course, and it turns out to be a lot more complicated. You cannot necessarily trust that every battery made by one brand is automatically better than every comparable battery from any other given brand.
List of battery brands that include the most reliable models available. Top battery brands include those from major manufacturers of batteries including Energizer, Duracell, Panasonic and more. In strict terms, a battery is a collection of multiple electrochemical cells, but in popular usage battery often refers to a single cell.
As wonderful as eBay is as a resource for just about anything, it can also be a frustrating source of counterfeit and fake products. Let's look at the sad case of UltraFire, a Chinese battery brand that has become so closely associated with poor quality (and dangerous) fakes that it's impossible to recommend.
Rayovac D: The most affordable D battery, suitable for bulk purchase with acceptable performance. Energizer 9V: Hard to justify due to its higher price and failure to outperform the competition. Duracell 9V: The most expensive option, tying for last place with Rayovac in terms of battery lifetime.
Still, the top three battery makers are responsible for two thirds (66%) of the total battery deployment, which highlights the importance of scale in this business, in order to have the most competitive product on the market. Panasonic, once upon a time a leader in the automotive EV business, has continued its slow slide down the table.
Batteries branded Fujitsu and Fujifilm, often shortened to "Fuji" even on the company's branded products, are made by a company called FDK Group.