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What Does the Battery Model Number Mean?

2 Answers

OAlaina

07/28/25 8:54pm

Automotive battery model numbers convey the following information: 2V indicates the battery voltage is 12V; 70AH represents the battery's current value of 70A (AH); SAE denotes the American standard, while EN signifies the European standard, reflecting their respective design standards. 120RC refers to the full discharge time under specific voltage conditions according to certain standards (such as Asian or American standards). 760CCA indicates the energy value under full discharge (current) at specific voltage conditions. Below is additional information about automotive battery model numbers: 1. Other numbers or model codes include: 6: indicates the battery consists of 6 cells, each with 2V, totaling a 12V battery. DZM: stands for electric vehicle (D) power-assisted sealed lead-acid battery (ZM). 14.6: the maximum charge voltage for this battery is 14.6. Additional references: A. Currently, domestic battery models are mainly categorized into: National Standard, Japanese Standard, German Standard, American Standard, etc. B. Example demonstration using the "National Standard." 2. Special identifiers: DF appended to the model number indicates low-temperature reverse connection, e.g., 6-QA-160DF; D appended denotes good low-temperature starting performance, e.g., 6-QA-120D; HD appended signifies high vibration resistance type.

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Ricky

08/12/25 1:36am

Last month, I just helped a friend replace the car battery, and the model number isn’t just randomly printed. For example, if you see a string of numbers like 6-QW-45, the '6' at the beginning refers to the number of cells—most conventional fuel-powered cars use 6-cell batteries. The middle letters 'QW' are key: 'Q' stands for a lead-acid battery designed for starting, and 'W' indicates a maintenance-free design. The final number '45' is the ampere-hour (Ah) rating—the higher the number, the greater the capacity. Nowadays, some newer car batteries also display parameters like CCA 650, which refers to the cold cranking amps at -18°C. When choosing a battery, you must cross-check it with the original manufacturer’s specifications. Last year, my neighbor tried to save money by installing one with insufficient CCA, and it made a clicking noise when starting in winter.

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