AAA電池常用於小型電子設備，例如電視遙控器、MP3播放器和數位相機。若設備在相同電壓下需要較高電流，則會使用較大尺寸的AA電池。AA電池的容量是AAA電池的三倍。
然而，隨著現代電子產品效率提升與小型化，許多原本設計使用AA電池的產品，已逐漸被可使用AAA電池的型號所取代。AAA電池的長度為44.5公釐，直徑為10.5公釐。
AAA鹼性電池每顆約重11.5公克，而AAA鋰電池每顆約重7.6公克，充電式（鎳氫）電池通常重約14至15公克。AAA鹼性電池和鋰電池的標稱電壓為1.5V，而鎳氫或鎳鎘電池則為1.2V。AAA鹼性電池的容量通常為900-1155mAh（3240-4158庫侖）。
- 類型：AAA鹼性
- 技術：鹼性
- 電壓：1.5V
The drawer of remotes and toys keeps emptying fast at my place, but this 8-pack has held up for months without a single dud. They sit snug in the plastic case too, so finding one in the dark is easy.
These eight AA batteries have powered my TV remote and a digital camera for months without needing a swap. They're holding up way better than the last pack I bought, and the price for eight is a solid deal.
Picked these up for the TV remote and an old digital camera, and the 8-pack means I won't be hunting for a spare for a while. They've lasted a few weeks in the camera without dying, which is more than I can say for the last cheap ones I tried.