The maximum current output determines the battery's discharge rate that the battery itself can supply in an instant, and "C" represents the discharge rate of the battery. For example, after 1 hour of discharge, it is "1C", and after 2 hours, it is "0.5C".

The battery's capacity is expressed in "mAH (milliampere-hour)." For example, a battery is marked with 3000mAH. When we discharge it with a current of 3000mA, which is 3A, and it takes one hour to discharge, the battery's discharge rate is 1C; if it is discharged with a 6A current, it belongs to 2C.

The "S" marked on the battery stands for series connection, and the "P" stands for parallel connection. The battery is connected in series to increase the voltage, and the parallel connection is used to improve the discharge current.

For example, a 3S4P battery pack composed of a 2100mAh lithium-ion battery means that the battery is composed of 12 lithium-ion batteries. The voltage is three the current discharge capacity is four times that of a single-cell battery. Times.

Therefore, if the maximum discharge rate of this battery pack is 6C, it is a set of lithium-ion battery packs with a voltage of 10.8V (3*3.6) and a maximum discharge current of 5.4A.

(2100mAh*6C*4P=2.1A*6*4=5.4A)

According to this method, other battery packs can be calculated.

The most crucial point is that lithium-ion batteries' minimum discharge voltage is about 3.7V, and the charger is generally marked with a maximum charging limit voltage of about 4.2V.

The most significant damage to the lithium-ion battery is the overcharge and over-discharge of the battery. Over-charge and over-discharge will reduce the life of the battery. The lithium-ion battery only has 500 cycles. That is, it will not work after 3 or 4 years.