What Is the Difference Between NiMH and NiCad?
What Is the Difference Between NiMH and NiCad?
Oct. 14,
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The sheer popularity of these rechargeable batteries often raises the question, Whats the difference between NiCAD and NiMH batteries?
To summarize, the main differences between NiCAD and NiMH batteries deal with capacity, memory effect, and environmental friendliness.
Nickel-metal hydride (NIMH) batteries have a higher capacity than nickel-cadmium (NICAD) batteries, which means that they can generally power your device for longer. They also dont suffer from the same memory effect, so they wont forget the ability to achieve a full charge over time. Finally, NiMH batteries are much better for the environment than their NiCAD battery counterparts.
However, nickel-cadmium still offers some advantages over nickel-metal hydride, such as their extreme temperature performance.
Our team wrote this article to help explain the difference between NiCAD and NiMH batteries, and to help you decide which battery is the right one for your needs. Dont hesitate to reach out to us when youre finished reading if you have any questions.
Nickel-Metal Hydride (NiMH) Batteries
NiMH batteries are a much more modern phenomenon. Research and development began at the Battelle-Geneva Research Center in , and was satisfactorily completed in .
The chemical composition of a standard nickel-metal hydride battery looks like this: a nickel hydroxide positive electrode plate, a hydrogen ion negative electrode plate, a separator, and an alkaline electrolyte such as potassium hydroxide.
NiMH batteries
Common uses: These include automotive batteries, medical instruments, pagers, cell phones, camcorders, digital cameras, electric toothbrushes, and other low-cost consumer devices.
Benefits: Heres a look at a few of the advantages of going with an NIMH battery:
Quite a high capacity compared to other rechargeable batteries
Resists both over-charging and over-discharging
Extremely lightweight construction
Friendly to the environment: no hazardous chemicals like cadmium, mercury, or lead
Drawbacks: And here are some of the limitations:
More expensive than other rechargeable models
Self-discharge rapidly while in storage
Cut power suddenly rather than a slow trickle down
Are you interested in learning more about nicad vs nimh? Contact us today to secure an expert consultation!
Some only work with manufacturers charger
Nickel-Cadmium (NiCAD) Batteries
The worlds first NiCad battery was developed by a Swedish scientist in . Needless to say, there have been many improvements since then.
A standard nickel-cadmium battery is composed of a nickel(III) oxide-hydroxide positive electrode plate, a cadmium negative electrode plate, a separator, and a potassium hydroxide electrolyte.
Ni-Cd Battery
Common uses: Some popular applications of NiCAD batteries are toys, emergency lighting, medical equipment, commercial and industrial products, electric razors, two-way radios, power tools, and more.
Benefits: Heres an overview of some of the advantages of NiCAD batteries:
Relatively inexpensive
Charge very quickly, simple to charge
Easy to store, easy to ship
Take a high number of charges
Functional in low temperatures
Drawbacks: And here are some of their shortcomings:
Not as powerful as some other rechargeable batteries
Self-discharge while in storage
Contain toxic metals that are harmful to the environment
Learn More About Difference Between NiMH and NiCad
If you have any questions about the nature or difference between NiCad and NiMH nickel-cadmium or nickel-metal hydride batteries, our team can help.
Weve been working in the field for over 20 years, and we have plenty of experience answering questions about both nickel-cadmium and nickel-metal hydride batteries.
We look forward to hearing from you. Contact us today to get in touch with an expert.
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