Best AA Rechargeable Batteries for Speedlight Flash (Nikon SB-900 SB-700 Canon 580EX 430EX)

No matter what Speedlight flash you're using, batteries are an important consideration.

Whether you're shooting with a Nikon SB-900, SB-800, SB-700, or SB-600, or a Canon 580 EX version I or II or 430 EX version I or II, or any of the Sony, Pentax, Metz or other Speedlight flashes, you'll get better performance using better batteries.

There's lots of talk on many forums about what AA rechargeable batteries are the best to use. I've used quite a few brands over the years, but for the last few years, Eneloops have been my favourite.

Here's why...