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What is the difference between capacity lithium batteries and power lithium batteries?

08-092024
Author : Battsysbattery

What is the difference between capacity lithium batteries and power lithium batteries?


There are many types of lithium batteries, such as power type lithium batteries and capacity type lithium batteries, but what is the difference between these two types of lithium batteries? Many people may not be very clear about it. Below, our technical personnel will explain the difference between power lithium batteries and capacity lithium batteries:


Different voltage levels

In the battery industry, as the voltage increases, the corresponding output voltage also increases, allowing power type lithium battery packs to meet the needs of some high-power devices; The direct effect of parallel connection is to increase the current of the entire battery pack, and the capacity is affected by the current at the output terminal. Therefore, the direct effect of parallel connection is to increase the capacity of the lithium battery pack. The capacity of the battery pack connected in this way is often relatively large, which is the so-called capacity type lithium battery pack.


The products used are different

On some large equipment, relatively high voltage values are required because low-power battery packs cannot support the normal operation of large equipment, so power type lithium battery packs should be selected. For example, the electric bicycles we usually use often require a voltage of 48V, which is considered quite high compared to some situations in our daily lives. So it is necessary to use power type lithium battery packs to ensure the operation of electric bicycles. And we usually go to some large supermarkets or shopping malls, some sign lights and backup power supplies, because the power consumption of these devices is not very high, so they generally use capacity lithium battery packs. The application of these two products is different.

18650 Lithium Batteries

Different internal resistance
The internal resistance of power type lithium batteries is smaller than that of capacity type lithium batteries. Taking 18650 Lithium Batteries as an example, manufacturers with good 3-rate discharge generally include PDC with an internal resistance of about 40; Generally, discharge at a rate of 5 does not have a PDC internal resistance of around 20.
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