Generally speaking, it refers to a discharge battery. Suppose the rated capacity of a battery is 10Ah, and if the maximum discharge current is 3CA, that is to say, the maximum current is 3* 10A, that is, 30A.

Where c refers to the rated capacity of the battery, and the capacity unit is "Ah", ampere-hour. Indicates the discharge time of the battery at a specified discharge current, which is the product of the discharge current and the discharge time. The greater the discharge current, the shorter the discharge time and the constant capacity.

"H is controlled below 6CA" means that the maximum discharge current should not exceed 6 times the rated capacity.

Generally speaking, the amplification current of 3C is large, and the fully charged battery will be discharged in 0.33 hours.