What does' c 'represent in the application of 18650 batteries.

What does' c 'represent in the application of 18650 batteries.

I believe many friends know that there is a C number in the application of 18650 batteries. Is it better to have a larger or smaller C number? Before answering this question, let's first understand what C specifically refers to? What is its function?
 
C represents the discharge energy of the battery, and this C is called "discharge rate" in battery terminology, which is the multiple of the discharge current value divided by the battery capacity value. For example, if a battery capacity is 1.5Ah, then 1c is 1.5A charge and discharge, 2c is 3A charge and discharge, and 0.5c is 0.75A charge and discharge; If the battery is 2Ah, then 1c is 2A charge and discharge, 2c is 4A charge and discharge, and 0.5c is 1A charge and discharge. C represents the discharge rate, and a few c is the capacity multiplied by several. 1c discharge is 1 hour, 2c is 0.5 hours, 0.5c is 2 hours (the larger the discharge current, the shorter the discharge time).
 
There are high rate batteries available, with high rate batteries capable of discharging over 10 seconds, while regular batteries can only discharge within 3 seconds. In layman's terms, 'c' represents the explosive power of a battery. High rate power batteries have a large instantaneous discharge current, making them particularly suitable for high current applications that require small battery size and light weight, such as model aircraft and brushless motors, which are very violent.
 
The higher the discharge rate, the faster the electricity is released. Generally speaking, batteries do not need to undergo high rate discharge, and this is something that everyone needs to pay attention to. Devices that truly require high rate discharge, such as model aircraft, require a momentary high current discharge during takeoff and sudden acceleration, which requires the support of high rate batteries.
 
So, do you all understand now? In fact, the higher the discharge rate, the better. Whether the discharge rate of lithium batteries is good or small depends mainly on the equipment you use. Many devices do not require high rate discharge at all, so they naturally do not need to use high rate discharge batteries. For example, competition level car models, aircraft models, drones, etc. will experience a large instantaneous current flow, so it is natural to need a higher discharge rate.
 
So generally speaking, the size of the lithium battery application is determined based on the actual size of the device. When purchasing a high rate lithium battery application, it is important to pay attention to whether your device can support such a large rate of current to avoid unnecessary losses.