The Energizer Ultimate Lithium AAA Batteries Pack of 8 is a set of high-performance single-use batteries. These AAA batteries have a voltage of 1.5V and a capacity of 1.3 Ah. They are made of lithium, which makes them lightweight and long-lasting. Energizer is a well-known brand in the battery industry, and this product is ideal for use in a variety of consumer electronics devices.