Eveready (PTY) LTD
Eveready (PTY) LTD
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Batteries: How they Work & How to Make them Last Longer

Date : 20 October 2020

TV remote stopped working? Is your torch not switching on? Stop the shaking and the smacking – it’s time to replace your batteries!

There are so many life-changing inventions that we take for granted like batteries – imagine how less convenient our lives would be without them.

But have you ever stopped to think about how batteries work? Let’s take a dive into battery knowhow and learn about how batteries work and how you can make them last longer.

How do Batteries Work?

We all know that placing the right size battery into a device will power the device but how do batteries release that power to power your devices?

Batteries are filled with chemicals that produce electrons. The chemical reactions that produce these electrons are referred to as electrochemical reactions. Batteries consist of positive (+) and negative (-) terminals which can be found at the ends of the battery.

Batteries can be produced in a Dry Cell or Wet Cell form. Primary dry cell batteries (paste form) are the types commonly used on torches, remotes, clocks, etc. and Eveready remains the only manufacturer of Primary dry Cell batteries in South Africa!

The electrons will collect on the negative (-) side of the terminal and, once a load is connected, the electrons will flow from the negative (-) terminal to the positive (+) terminal as fast as they can. This load is connected with a wire and can take the form of a light bulb, like in a torch, or an electronic circuit like in a remote.

Zinc Chloride vs. Alkaline Batteries

There are also different types of batteries and Eveready manufactures both Zinc Chloride and Alkaline Batteries.

Zinc Chloride batteries form a part of Eveready’s least expensive battery line and are best used in devices with light to moderate power needs such as remote controls, clocks and calculators.

Zinc Chloride batteries use a Zinc Chloride/Amonium Chloride solution as an electrolyte to transport the current between the positive pole, consisting of manganese dioxide, and the negative pole made from zinc.

While Alkaline batteries consist of a negative terminal (anode) made from manganese dioxide and a positive terminal (cathode) made from powdered zinc metal. The electrolyte solution present in Alkaline batteries is a potassium hydroxide solution.

So what makes these batteries different?

Both Zinc Chloride and Alkaline batteries have the same voltage (1.5V) but Alkaline batteries have a higher energy density and longer shelf-life.

While Zinc Chloride batteries supply 50 percent more energy than Zinc Carbon batteries, Alkaline batteries produce 500 percent more power.

It is this higher power supply potential that makes Alkaline batteries better-suited for higher-drain devices such as motorized toys, electric toothbrushes, electric shavers and digital cameras among other devices.

Not sure which device is better suited for each type of Eveready battery? Our battery guide will help you make an informed choice.

How to Make Your Batteries Last Longer

Modern lifestyle is all about trying to make your money go further and reducing waste. That been said – the same way you roll out your toothpaste to make sure you’ve used it all, there are ways to make sure that you are making your batteries last as long as possible.

Here’s a list of helpful tips to make your batteries last longer:

  • Only use the correct size and voltage batteries for the device. For example, if you use a Zinc Chloride battery in a high-drain device like a digital camera, it will not last as long as an Alkaline battery which is suited for use in high-drain devices.
  • Replace the whole set of batteries at the same time. When replacing batteries, it is recommended to always replace them all at the same time. A new battery has a higher voltage than an older battery. In a series circuit, a new battery can begin charging the old battery reducing the overall battery life of the new battery.
  • Place infrequently used batteries in storage. If you know that you are not using a device frequently, it is best to remove and store the batteries in a cool, dry place. Even if the device is not switched on or in use, the energy from the batteries will continue to release. There is also the risk of the batteries leaking inside your device.
  • Do not mix battery types. It is advised to use the same types of batteries in a device. The batteries could leak and damage your device. Keep batteries of the same type together.
  • Always store your batteries in a cool and dry place. Avoid placing batteries in high-heat conditions. Batteries should remain in their original packaging until used in a storage area between 15 and 25 degrees Celsius.

Feel free to explore the Eveready battery range to find out more about our batteries:

Battery Type

Battery Name

Alkaline Battery

Eveready Platinum

Premium Alkaline Battery

Eveready Platinum Plus

Premium Digital Lithium Battery

Eveready Digital Lithium

Zinc Chloride Battery

Eveready PowerPlus Silver

Premium Zinc Chloride Battery

Eveready PowerPlus Gold



Have any more battery-related questions? We would love to answer them for you! Feel free to leave a comment in the comments section on our Facebook, Twitter or Instagram pages.