The rated voltage of a single lead-acid battery is 2V, the number of charge and discharge times is between 200-300, and the rated service life is 3 years. The lead-acid battery used is 12V, which means that the storage batteries used are 6 single cells connected in series to form a battery pack, reaching the rated 12V voltage. The product label of storage batteries used in China is generally similar to "6-QAW-54a".

　　1). 6 meter storage batteries use 6 cells, Q stands for storage batteries, M stands for motorcycle storage batteries, D stands for electric vehicle storage batteries, F stands for valve-controlled storage batteries, JC stands for storage batteries for ships, HK is storage batteries for aviation.

　　2). A and W indicate the type of storage batteries, A indicates the type of storage batteries, W indicates maintenance-free storage batteries, if not marked, it indicates ordinary storage batteries.

　　3). 54 indicates that the rated capacity of storage batteries is 54Ah.

　　4). The subscript a represents the first improvement to the original product, if it is b, it represents the second improved version, and so on. In addition, some batteries will also mark the maximum current in the auxiliary brackets. Generally, the starting current needs to be more than 250A, so the rated current of the replaced battery must be greater than this value, otherwise the current will not be enough to start.