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Difference between NiMH and NiCd

Difference between NiMH and NiCd

There are many types of batteries on the market, and two of the most popular are NiMH and NiCd. But what’s the difference between them? In this post, we’ll take a closer look at both battery types and discuss the pros and cons of each. By understanding the differences, you can make an informed decision about which battery is best for your needs. So let’s get started!

What is NiMH?

NiMH is a type of rechargeable battery that uses nickel and metal hydride, instead of the traditional lead acid, to store electrical energy. NiMH batteries are often used in medical devices and other high-tech applications where reliability and safety are paramount. NiMH batteries offer a number of advantages over lead acid batteries, including a higher capacity, longer life span, and decreased environmental impact. NiMH batteries are also more resistant to “memory effect,” meaning they can be recharged multiple times without losing capacity. Despite these advantages, NiMH batteries are still more expensive than lead acid batteries, making them less popular for consumer applications. However, as battery technology continues to improve, it is likely that NiMH batteries will become increasingly prevalent in the marketplace.

What is NiCd?

NiCd batteries are a type of rechargeable battery that uses nickel and cadmium as electrodes. NiCd batteries are inexpensive and have a high power density, making them ideal for applications such as power tools and cordless phones. However, NiCd batteries also have some disadvantages. They are highly toxic and can cause environmental damage if disposed of improperly. Additionally, NiCd batteries have a “memory effect,” meaning that they must be completely discharged before being recharged. For these reasons, NiMH batteries are now more commonly used than NiCd batteries.

Difference between NiMH and NiCd

NiMH and NiCd batteries are both types of rechargeable batteries. NiMH batteries are newer than NiCd batteries, and they have some advantages over NiCd batteries. NiMH batteries can hold more charge than NiCd batteries, so they last longer. NiMH batteries also don’t suffer from the “memory effect” that NiCd batteries do. The “memory effect” is when a NiCd battery doesn’t hold as much charge after it’s been recharged a few times. NiMH batteries don’t have the memory effect. NiCd batteries are less expensive than NiMH batteries, though, so if cost is a concern, NiCd might be the better choice.


NiMH and NiCd batteries have different benefits, so it’s important to understand which type is best for your needs. If you need a battery that can handle high-power applications, then NiCd is the better option. However, if you are looking for a longer-lasting battery with fewer memory effects, then NiMH is the way to go. Whichever battery you choose, make sure to read the manufacturer’s instructions carefully to get the most out of your device.

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