Battery Types Used in LED Lights: Well-rounded Batteries Choosing Guide
There are many battery types which are widely being used by people in today’s world. They are in a position to make the life easy for most of the individuals as well.
Many different types of batteries are being used by people for various LED lights (LED work lights, flashlight and more). Therefore, it is better to be aware about the different types of batteries and the different purposes that they are being used for. Then it is possible for you to go for the best battery type based on your requirements Moreover, knowing the type of battery will be of great help in choosing the right LED lights (LED work light or flashlight for example) since power source greatly affects the performance of the LED light.
Classification of Batteries Used in LED lights
Batteries can mainly be divided into three main categories. They include lithium ion batteries which is also known as Li-ion battery (further reading: Lithium-ion battery from Wikipedia), alkaline batteries (further reading: Alkaline battery from Wikipedia) and nickel metal hydride batteries which is also known as NIMH battery (further reading: Nickel–metal hydride battery from Wikipedia). The functionality of these batteries differ from each other. As a result, they are being used for different purposes as well. In order to figure out the right method of application, people should be aware about the functionality as well as the real world uses.
Lithium ion Batteries Used in LED Lights
Voltage: 3.6 V
Estimated number of charging cycles: 500-1000
Li-ion Battery in Tesla Model S (image source)
The lithium ion batteries, which are also known as Li-ion batteries are a rechargeable battery type. Lithium ions can be found within these batteries and they are responsible for the overall functionality offered. At the time of operation, lithium ions inside the battery are attracted to the positive electrode from the negative electrode. This process is known as the discharge of a lithium ion battery. The entire process is reversed when the battery is charging.
It is also possible to divide the lithium ion batteries to many other subcategories. They vary based on the safety features, cost, performance and chemistry. However, it is important to keep in mind that the lithium ion batteries are much different when compared to the lithium primary batteries. The lithium primary batteries are disposable, but Li-ion batteries don’t come with that capability.
Uses of Lithium ion Batteries
Lithium ion batteries are widely being used in consumer electronic products ( rechargeable LED headlamp for example). It is common to see these batteries being included in portable, battery powered products. Plenty of reasons have forced engineers to go ahead and use lithium ion batteries within consumer electronics. No memory effort, high energy density and relatively slow loss of charge are some of the most prominent reasons out of them. Apart from consumer electronics, it is possible to see Li-ion batteries being used in aerospace, electric vehicle and military applications as well. A large number of researchers are currently carried out in order to improve the intrinsic safety, durability and density of these batteries, while reducing the overall cost.
Alkaline Batteries Used in LED Lights
Voltage: 1.5 V
Estimated shelf life: 5-7 years
Alkaline Battery Types: AAA, AA, C, 9V… (image source)
The functionality of alkaline batteries is controlled by the reaction that takes place in between manganese dioxide and zinc. Some alkaline batteries are designed to be recharged (further reading: Rechargeable alkaline battery from Wikipedia). There is a significant difference in between alkaline batteries and zinc carbon batteries. That’s mainly because alkaline batteries come along with a higher energy density. In addition, they are provided with an enhanced shell life, which can keep the consumers away from frustration. Some of the batteries, such as silver oxide batteries are in a position to deliver a better energy density than alkaline batteries. However, the cost associated with those batteries is significantly high and people tend to stick to alkaline batteries for their applications.
Uses of Alkaline Batteries
The uses of alkaline batteries are not just restricted to a specific niche. Not only for low-drain devices (further reading: low/high drain devices) only uses electricity sometimes (like a TV remote control, LED flashlights, radios, clocks and more), even moderate-drain items such as lights using incandescent bulbs. Also, it can be used in high-drain devices (digital cameras, for instance), though life expectancy will be sharply reduced. Simple example, LED lantern (powered by alkaline batteries) could typically deliver single day of constant use, or many days of periodic use.
NiMH Batteries Used in LED Lights
Voltage: 1.2 V
Estimated number of charging cycles: 100-500
NiMH Battery Types (image source)
Nickel Metal Hydride batteries can also be considered as one of the most popular rechargeable battery types available in the market (LED light powered by NiMH battery rechargeable LED work light). The functionality of these batteries are pretty much similar to Nickel Cadmium batteries. In the NiMH batteries, the positive electrodes are made out of nickel hydroxide. The negative electrode is an alloy, which has the ability to absorb hydrogen. The primary benefit associated with NiMH batteries is their ability to hold a higher charge. In fact, these batteries are in a position to hold up to 3 times more charge when compared to nickel cadmium batteries of the same type. The energy density offered by a NiMH battery is similar to a lithium ion battery.
Uses of NiMH Batteries
The benefits associated with Nickel Metal Hydride batteries have tempted people to use them for a large number of applications. Most of the applications of NiMH batteries are replacements of Ni-Cd batteries. The compact dimensions associated with the NiMH batteries have contributed a lot towards the above mentioned fact.
If a higher energy density is expected with smaller size, NiMH becomes a perfect option available for the people to consider about. This is the main reason why NiMH are being used for AA batteries. The AA batteries are used by people who live in every corner of the world for day to day purposes. Due to the small size and compact dimensions, they have got the opportunity to make their lives easy. The range of AA batteries made out of NiMH are from 1100mAh to 3100mAh.
Once cell of a NiMH battery usually operates at a potential difference of 1.2V. Therefore, it is slightly lower when compared to the standard 1.5V cells available in the market. However, NiMH can effectively be used on devices that require batteries with 1.5V. From the recent studies, it has been identified that around 20% of portable and rechargeable batteries manufactured in the world are based on NiMH technology. The discharge rate associated with NiMH batteries is significantly low as well and they can be made available for the people to purchase at an affordable price tag.