How many types of R03 carbon batteries and alkaline batteries?
LR03 AM-4 is an alkaline battery, and R03P UM-4 and R03C UM-4 are ordinary zinc-manganese batteries. To identify whether it is alkaline or ordinary, I will tell you the meaning of the sign. R stands for round, and when there is no letter in front, it means a normal battery. An L on the front indicates an alkaline battery. The two digits after R indicate the size and model of the battery, such as 03 means AA battery, the last letter indicates the performance of the battery, S-normal type, P-high power type, C-high capacity type. Some ordinary batteries are marked with S, and some are not.
Generally, the packaging of alkaline batteries is reverse polarity packaging. It can be seen from the outside. The second weight is heavier.