Difference Between Primary and Secondary Batteries!

Difference Between Primary and Secondary Batteries!

Batteries are all around. From small batteries which power portable devices like laptops and smartphones, to big machines used for power backups. As we rely more and more on batteries we shall understand about the batteries. However, not all batteries are created equal.

In fact, there are two main types of batteries: primary and secondary. So, what is the difference between the two?

➜ Difference Between Primary and Secondary Battery

• The main distinction between primary and secondary batteries lies in the reversibility of the active material.

• Secondary batteries have reversible active materials, allowing them to be recharged, while primary batteries do not possess this feature. Consequently, secondary batteries are commonly known as rechargeable batteries.

➜ Use Cases of Primary Batteries

• On the other hand, primary batteries are intended for single use and disposal. They have lower self-discharge rates and longer shelf lives compared to secondary batteries.

• Additionally, primary batteries typically have greater mass and volume-specific capacities, allowing them to store more energy per unit of weight or volume.

➜ Use Cases of Secondary Batteries

• Secondary batteries are widely used in smartphones, tablets, laptops, digital cameras, and other portable electronic devices. Their rechargeable capability allows users to conveniently power these devices on the go.

• Particularly lithium-ion batteries are essential for electric vehicles (EVs) and hybrid electric vehicles (HEVs).

➜ Advantages of Secondary Batteries

• One key advantage of secondary batteries is their reusability, making them a cost-effective option in the long term.

• Moreover, secondary batteries often have higher energy densities, enabling them to store more energy in a smaller space.

➜ Disadvantages of Secondary Batteries

• Secondary batteries also have some drawbacks. They tend to experience higher self-discharge rates over time, even when not in use.

• Additionally, they generally have higher internal resistance, resulting in lower load capacity.

➜ Which is the Best Choice?

The choice between primary and secondary batteries depends on the specific application. If you require a battery that can be recharged multiple times and offers high energy density, a secondary battery is the optimal choice.
However, if you only need a battery for one-time use and desire a longer shelf life, a primary battery may be more suitable.

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Source: LinkedIn

Credits: Mr. Neeraj Kumar Singal’s Post