TINIAO6F22 9v battery (no pollution to the environment, strong power, durable, long storage time, stable and reliable voltage, often used in instruments, remote control and other household appliances, is the first choice for instrument manufacturers supporting products. A box of 10, one piece of 500, one piece gross weight 22 kg, volume 0.013 m3. And then there's the 3-volt electron 2016,2025,2032