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Benefits of NiMH Batteries

What are the Benefits Of NiMH Batteries? There are many benefits of using a NiMH Battery  in your new or upgraded application. They can make all the difference between the success or failure of your new product developments, so it's worth understanding just why you should consider using NiMH Battery Technology as part of your application.

It's rare that new electronic applications that require mobile battery power are able to get the best solution by just searching for an online battery store and purchasing a couple of off the shelf AA batteries, so by using a specialist British Battery Design and Manufacturer such as PMBL you can ensure you get the best results. 

Located in beautiful Chard, Somerset, UK, PMBL can provide all you need for custom NIMH battery pack design. As part of our initial discussions, we work with clients to establish exactly which Battery Technology is the right one for their needs. From then on, attention to detail and full customer support brings the final assembled battery pack to life. Many of our battery solutions require specific terminations and wrapping. These issues and requirements are identified as early in the process as possible so that a clear set of objectives are established.


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Should a NiMh Battery be selected as the correct solution, here are some of the Benefits of NiMH Batteries:

  • 30 - 40 % higher capacity over a standard Ni-Cd. 
  • Potential for even higher energy densities. 
  • Less prone to memory than the Ni-Cd. 
  • Periodic exercise cycles are required less often.
  • Simple storage and transportation - transportation conditions are not subject to regulatory control as they are with other battery types. 
  • Green and Environmentally friendly - contains only mild toxins; and 
  • Profitable for recycling.

However, there is always "two sides to every coin", so to keep a balanced view of NiMH Batteries here are some disadvantages of this technology that should also be taken into account when considering NiMH Battery Packs:

  • Limited service life - if repeatedly deep cycled, especially at high load currents, the performance starts to deteriorate after 200 to 300 cycles. Shallow rather than deep discharge cycles are preferred.
  • Limited discharge current - although a Nickel Metal Hydride Battery is capable of delivering high discharge currents, repeated discharges with high load currents reduces the battery’s cycle life. Best results are achieved with load currents of 0.2C to 0.5C (one-fifth to one-half of the rated capacity).
  • More complex charge algorithm needed - the Nickel Metal Hydride Battery generates more heat during charge and requires a longer charge time than the Ni-Cd. The trickle charge is critical and must be controlled carefully.
  • High self-discharge - the Nickel Metal Hydride Battery has about 50 percent higher self-discharge compared to the Ni-Cd. New chemical additives improve the self-discharge but at the expense of lower energy density.
  • Performance degrades if stored at elevated temperatures - the Nickel Metal Hydride Battery should be stored in a cool place and at a state-of-charge of about 40 %
  • High maintenance - battery requires regular full discharge to prevent crystalline formation.
  • About 20 % more expensive than Ni-Cd - Nickel Metal Hydride Battery designed for high current draw are more expensive than the regular version.

Talk to a NiMH Battery Pack Design and Assembly Specialist

If you would like to discuss the Benefits of NiMH Batteries and how they may help the delivery of your new application,  PMBL's  NiMH Battery Specialists are here to help: 


Call us on 01460 66366 or email or Click Below:


Get NiMH Battery Pack Design Advice

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