Cordless power tools are really convenient. After all, it is much easier to work when you are not limited by the cord of your power tool. It has the added benefit of not requiring extension cords too. However, they require batteries. In this article, you will learn about the different types of batteries used in cordless power tools. If you want to learn the difference between dewalt batteries, and other types of batteries. Without further ado, let’s start:
What are the three major types of batteries?
Currently, there are three main types of rechargeable batteries used in cordless power tools. They are NiCd (nickle cadmium), NiMH (nickle metal hydride), and lastly, Li-Ion (lithium ion). Below, we will discuss each battery type in depth, which includes their specification, advantages and disadvantages, and more. Let’s start with nickle cadmium (NiCd).
Nickle Cadmium (NiCd)
Nickle Cadmium batteries are the oldest among the three listed in this article, however, they are still being used because they are cheap and have a tough battery life, in addition to having a good lifespan. Despite this, NiCd batteries are being outperformed by the other two listed here due to its old age.
NiCd batteries have a few advantages. First, they are resilient to impact and heat damage. They feature a long life cycle, having the ability of 1,000 recharges before degrading. NiCd is also resilient to being in a state of long discharge, however, we do not recommend it. Lastly, they are less expensive compared to the other battery types.
Having said that, NiCd batteries also come with disadvantages. They are the most bulky battery out of the three types mentioned here while having a lower capacity. NiCd should also be deep discharged once every four weeks or else they will suffer from memory effect. The majority of NiCd batteries must be cooled first before they charging them. Lastly, cadmium, an element used in NiCd batteries are very harmful to the natural environment, and they should be properly disposed of.
Nickle Metal Hydride (NiMH)
Nickle Metal Hydride (NiMH) is a battery technology that is newer than NiCd. As such, it features improvements over NiCd, notably on the environmental hazard. One of the biggest advantages of NiMH is the improved battery capacity, allowing for double or even triple the capacity of NiCd batteries. Having said that, NiMH are still sensitive when it comes to storage and charging conditions, requiring to be cooled first when charging. They also must be deep discharged 4 times a year to prevent memory effect from affecting the battery. NiMH is more expensive than NiCd batteries, but cheaper then Li-Ion.
Lithium Ion (Li-Ion)
Lithium ion battery packs is the latest technology to be adopted by wireless power tools. They are expensive, however, they are the best battery They are definitely the best choice of the three types of batteries, outperforming in all areas, but they are also expensive.
Temperature is the greatest danger to Li-Ion battery packs. Since they are immune to memory effect, Li-Ion batteries have no problem with charging conditions affecting the battery life. On the other hand, Li-Ion batteries degrade due to usage and time. Normal usage of Li-Ion batteries degrades its components, reducing battery life. High temperatures will accelerate the decrease of battery life even more. Despite this, Li-Ion batteries are better compared to other batteries in this list because of their fast charging and high capacity. That makes Li-Ion very handy for power tools that require a lot of power to work.
Because Li-Ion technology is still new, improvements are still being made for this type of battery, eliminating some of its weaknesses over time with the latest incarnations.