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What Are Rechargeable Batteries Made Of-Introduction, Making And Comparison

Jan 21, 2021   Pageview:97

If you are not sure what are rechargeable batteries made of? Or don't you know which is the most common rechargeable battery? So you are in the right place, as this guide helps get all the answers related to the car battery.

A rechargeable battery is a type of electrical battery composed of one or more electrochemical cells.  As the electrochemical reactions are electrically reversible, it is known as a secondary cell. In other words, after the stored charge has drained, the chemical reactions of the battery will occur again, in reverse, to store a new charge. The demand for Rechargeable batteries is rising twice as high as non-rechargeable battery demand in part because rechargeable batteries have a smaller effect on the environment and overall cost of use than disposable batteries.

So, are you ready to know more about rechargeable batteries? Let's jump in!!

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What is the most common rechargeable battery?

In rechargeable batteries, many different combinations of chemicals are widely used. Different types of batteries commonly used include Lead-acid, nickel-cadmium (NiCd), nickel-metal hydride (NiMH), lithium-ion (Li-ion), lithium-ion polymer (LiPo), and rechargeable alkaline batteries.

Lead-Acid Batteries

Lead-acid batteries are the oldest type of rechargeable battery, patented in 1859 by the French physicist Gaston Planté. Their capacity to provide high-surge currents ensures that the cells retain a relatively large power-to-weight ratio. Along with their low cost, these characteristics make them desirable for use in motor vehicles' high currents.

Nickel-Metal Hydride Batteries

A battery of nickel-metal hydride, abbreviated as NiMH or Ni-MH, is very similar to a cell of nickel-cadmium (NiCd). Just like NiCd, NiMH batteries use positive nickel oxyhydroxide (NiOOH) electrodes, but instead of cadmium, the negative electrodes use a hydrogen-absorbing alloy. A NiMH battery can have equal size of two to three times the power of a NiCd battery, and its energy density is similar to that of a lithium-ion cell.

lithium-ion batteries

Lithium-ion batteries are a type of rechargeable battery in which, during discharge, lithium ions shift from the negative electrode to the positive electrode and back while they are charged. A conventional lithium-ion cell's negative electrode is made of carbon. The positive electrode is a metal oxide, and in an organic solvent, the electrolyte is a salt of lithium. With one of the best energy densities and just a slow loss of charge while not in operation, they are one of the most common forms of rechargeable batteries for portable electronics. Lithium-ion batteries are more costly than NiCd batteries but, despite being smaller and lighter, work over a broader temperature spectrum. In order to reduce peak voltages, they are fragile and hence need a protective circuit.

Lithium-Ion Polymer Batteries

In order to improve discharge-current capacity, lithium-ion polymer (LiPo) batteries are typically composed of several identical secondary cells in parallel. They are often available in "packs" series to maximize the overall voltage available. Their key difference from lithium-ion batteries is that there is no organic solvent holding their lithium salt electrolyte. It is instead found in a solid composite polymer such as polyethylene oxide or polyacrylonitrile. LiPo's benefits over the design of lithium-ion include potentially lower manufacturing costs, adaptability to a wide range of packaging shapes, reliability, and robustness. Their big downside is that they hold less charge.

Alkaline Batteries

There are also rechargeable types of alkaline batteries, a kind of primary battery that relies on the zinc (Zn) and manganese dioxide reaction (MnO2). They are manufactured fully charged and have the capacity for years to bear their charge, longer than most NiCd and NiMH batteries. Rechargeable alkaline batteries may also provide high performance of recharging and also fewer effects on the atmosphere than disposable cells.

What are rechargeable AA batteries made of?

The average rechargeable AA battery is made of steel and a mixture of zinc/manganese/potassium/graphite, with the remaining balance made up of paper and plastic. Many of these battery "ingredients" are easily recyclable as non-toxic products.

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What are non-rechargeable batteries made of?

Non-rechargeable batteries are known as primary batteries and have some very significant uses. Some pacemakers, remote controllers, electronic keys, and children's toys use these primary batteries. Non-rechargeable batteries are also easily accessible and have greater capacity.

The non-rechargeable batteries are the same as ordinary alkaline and carbon-zinc batteries. and made up of a Zinc, Manganese Dioxide, Potassium Hydroxide

Now we know what are rechargeable and non-rechargeable batteries let's look at which one is best:

Both in rechargeable and non-rechargeable (single use) form, there are several different forms of batteries.

You often don't have an option as to what kind to use-for example, modern mobile phones all rely on rechargeable batteries-but what about those cases in which you have a choice?

Let's ascertain which one is right for you and why, read below.


Generally, rechargeable batteries cost more than Non-rechargeable batteries. On top of that, You'll need to buy a battery charger.

But when you consider that it is feasible to recharge rechargeable batteries hundreds or even thousands of times, the lifetime cost of rechargeable batteries would be much lower than the cost of non-rechargeable batteries.

?Environmental Impact

With the ability for a single rechargeable battery to be replaced by hundreds of non-rechargeable batteries, it is clear that rechargeable types should have a much smaller impact on the environment. They cut the use of resources and produce much less waste.

The cadmium in older rechargeable batteries, however, is a toxic compound, so to mitigate this risk, nickel-cadmium batteries need to be properly recycled. Regular alkaline batteries contained added mercury long ago. That's not the case today, and these batteries can actually be converted into fertilizer.


Despite their varying makeup, rechargeable batteries are just as recyclable as their regular counterparts. In fact, it is important for old nickel-cadmium batteries to be properly recycled to keep cadmium out of the environment.

Wrapping it Up

Now you have come to the end of this guide, and hopefully, you are now well- versed with rechargeable batteries, making, and comparison. Hopefully, all the questions that are boiling your head got answered!


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