NiMH battery and battery (Nickel metal hydride)
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A NiMH battery, which stands for nickel-metal hydride battery, is a rechargeable battery that is commonly used in various electronic devices. It is an improved version of the older nickel-cadmium (NiCd) batteries. NiMH batteries have a higher capacity, which means they can store more energy. In addition, they are less sensitive to the memory effect and are more environmentally friendly because they do not contain heavy metals.
What is the added value of NiMH batteries?
What are the uses of NiMH batteries?
NiMH batteries are used in various applications due to their high energy density and environmental friendliness. Some of the common uses of NiMH batteries include:
- Tools: cordless power tools such as drills, screwdrivers, saws, and lawnmowers often use NiMH batteries. Their power and durability make them suitable for higher-load applications
- Emergency lighting and backup systems: NiMH batteries are widely used in emergency lighting and as a backup power supply for essential equipment during power outages, thanks to their reliability and rechargeability
- Communication technology: NiMH batteries are also common in wireless communication devices such as portable radios, walkie-talkies, and emergency communication systems, where a stable energy supply is important
3 examples of NiMH batteries
Elfa has many different batteries in its range that may interest you. For example, Elfa has a wide range of AA NiMH rechargeable batteries and AAA NiMH rechargeable batteries from brands such as Varta, GP and Duracell.
Varta Recharge Battery Power
A good option is the Varta Recharge Battery Power 2600mAh AA Blister 4 1.2V. This rechargeable NiMH battery from VARTA is efficient, made of high-quality materials and is an environmentally conscious choice.
GP Batteries ReCyko+
We also have NiMH batteries from GP Batteries. A good example is the HP NiMH battery ReCyko+ AAA 850mAh carton. This type of battery is often used in consumer goods and is an environmentally conscious application.
Duracell Rechargeable
In addition, we have NiMH batteries from Duracell, such as the Duracell RCR Ultra NiMH battery AA 1.2V 2500mAh. This battery is ideal for professional use.
Benefits of nickel metal hydride batteries
- 30–40% higher capacity: compared to standard NiCd batteries
- Less sensitive to memory effect: compared to NiCd batteries
- Easy storage and transport: transport conditions are not subject to legal restrictions
- Environmentally friendly: contains only mild toxins
- Suitable for recycling
Disadvantages of nickel metal hydride batteries
- Limited lifespan: when deeply discharged repeatedly, performance begins to deteriorate after 200 to 300 cycles
- Limited discharge current: although a nickel-metal hydride battery can deliver high discharge currents, repeated use under high load reduces battery life
- Complex charging algorithm required
- More heat during charging and longer charge time than NiCd batteries
- Higher maintenance: the battery requires regular full discharge to prevent crystalline formation
- Around 20% more expensive than NiCd batteries
Comparison with other rechargeable batteries
NiMH batteries have a few disadvantages compared to lithium-ion batteries. For example, NiMH batteries should be fully discharged about once every two months to maintain optimal performance, while Li-ion batteries are virtually maintenance-free. In addition, Li-ion batteries have no memory effect, lower self-discharge, and are more compact due to their higher energy density. The lifespan of Li-ion batteries is usually around 500 charge cycles. However, Li-ion batteries are more sensitive to heat.
Which battery fits best always depends on the application. What is crucial in one application may be less important in another. That is why we are happy to help you make the right choice. Elfa provides an overview (see below) of battery properties and compares different battery types based on charging speed, reliability, and self-discharge.
Questions or need advice? Feel free to contact us.
Customized NiMH battery pack at Elfa
At Elfa, we have the capacity to tailor NiMH battery packs to produce, such as those of the brand Panasonic. In our own assembly department, we manufacture battery packs and battery packs that meet the specific requirements of our customers. We adjust the dimensions, voltage, capacity, connector and seal based on your needs and requirements. So you can count on battery packs that are fully tailored to your needs and specifications.
Frequently Asked Questions about NiMH batteries
- How should NiMH batteries be stored?
- Can NiMH batteries be charged quickly?
- Can NiMH batteries be used in any charger?
- Are NiMH batteries environmentally friendly?
- Why do NiMH batteries self-discharge?
For more information about nickel metal hydride (NiMH) batteries, feel free to contact us. Elfa can also advise you on other types of rechargeable batteries and battery solutions.