The C-rate of a battery refers to its charge or discharge rate relative to its nominal capacity. It is typically expressed as a multiple of the battery’s rated capacity (Ah). For example, a battery with a nominal capacity of 10 Ah and a C-rate of 1C can be charged or discharged at a current of 10 A (10 Ah x 1C = 10 A). Similarly, a C-rate of 2C would mean a charging or discharging current of 20 A (10 Ah x 2C = 20 A). The C-rate provides a measure of how quickly a battery can be charged or discharged.

The higher is the C-rate, the faster you can charge and discharge your battery

So when you want to buy 18650 lithium-ion batteries 3.7V or  32700 lithium-ion batteries 3.2V you should think about the application you want to use it for

Example of Low C-rate battery:  0.5C  18650 lithium-ion 1800mAh 3.7V  Rechargeable Battery

Needs 2 hours to being fully charge when it is charged at a current of 1800*0.5 = 900 mA or  (0.9 A), and 2 hours to fully discharge when it is fully charged  and providing a Current of 0.9 A.

Application: Laptop Battery, flashlight because you need a battery to provide power during a long period of time so that you can use it for as long period of time as possible.

Example of medium C-rate battery:  1C  18650 2000mAh 3.7V  Rechargeable Battery

Needs 1 hours to being fully charge when it is charged at a current of  2000*1 = 2000 mA or  (2 A), and 1 hours to fully discharge when it is fully charged and providing a Current of 2 A.

Application: Laptop Battery, flashlight because you need a battery to provide power during a long period of time so that you can use it for as long period of time as possible.

Example of High C-rate battery:  3C  18650 2200mAh 3.7V  Rechargeable Battery

Needs 1/3 hours = 20 minutes to being fully charge when it is charged at  a current of 2200*3 = 6600 mA or  (6.6 A), and 20 minutes to fully discharge when it is fully charged and providing a Current of 6.6 A.

an application on where you need high C-rate is power tolls drill.

For electric vehicle the market is training for fast charge, because we want to charge our as faster as possible

please, visit our Website: www.zscells.com to discover more about batteries