Carbon batteries: How to identify carbon batteries, why use carbon batteries? AA battery-Ni-MH battery pack

2020.07.22

  Carbon batteries and alkaline batteries are both dry batteries, but they are divided into two categories according to different materials. The nominal voltage of both carbon batteries and alkaline batteries is 1.5V, but alkaline batteries of the same volume have a larger capacity and are more suitable for high-current discharge.

      The essential difference between carbon batteries and alkaline batteries is the difference in internal materials. In short, carbon batteries are composed of carbon rods and zinc skins, but there are cadmium and mercury inside, which are not conducive to environmental protection, but they are cheap, so they still have a place in the market. Alkaline batteries do not contain heavy metal ions and have high current. Conducive to environmental protection is the direction of future battery development.    

      The structure of an alkaline battery is completely opposite to that of an acid battery. The center of the battery is the negative electrode, the zinc is in powder form, and the positive electrode area is in the outer layer. It is a mixture of MnO2 and KOH, and the outer shell is a steel cylinder. Alkaline zinc-manganese battery overcomes the shortcomings of acid battery storage time and unstable voltage, but it is still a disposable battery.