Large capacity lithium-ion batteries are a popular term for certain lithium-ion battery packs with larger capacity, and there is no specific regulation on how high the voltage and capacity are.

　　According to our statistics, lithium batteries with a capacity greater than 5Ah can generally be referred to as high capacity lithium batteries, with a single cell voltage of 3.7V and a single cell capacity ranging from tens of milliampere hours to tens of ampere hours. For example, the 18650 lithium battery we often use is 3.7V2200mAh. When our customers need a 12V20Ah battery pack, they need 3 series of 9 parallel 18650-220mAh single lithium batteries, with a total of 27 single cells, forming a 11.1V19.8Ah battery pack.

　　Usually, 12V devices are used, with a voltage range of 9-15V, while 11.1V19.8Ah lithium batteries have a voltage range of 9-12.6V.

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