.st0{fill:#FFFFFF;}

Do Negative Sides of Batteries Go on Springs? 

 September 19, 2021

By  Phil Borges

We all know that batteries are not easy to deal with, but did you know they may have a few more secrets than we realized?

Did you know that there is such a thing as a battery spring?

Have you ever tried to install a battery and wondered why the negative side of the battery always goes on the spring?

Did you know the purpose of that spring on your battery is?

Continue reading, and you will be amazed by the answers you will find out to these questions in this article.

How do batteries work?

A battery is made up of two metal sheets or plates (called electrodes), which are separated by an insulator, usually made from glass.

The inside of the battery has a circuit with wires, and each wire connects to one electrode. One wire will connect to the positive electrode (+), and the other will connect to a negative electrode (−).

Batteries generally ionize gases like lead-acid, sulfuric acid, or sodium chloride for it to produce electricity. This means that when you flip on your TV remote, for example, electrical energy must travel through 3 steps:

1) Electrical energy flows out of the small case and into one end (positive terminal) of your AA batteries.

2) Energy travels through metal wires to the other end (negative terminal) of your AA batteries and out through wires to the TV remote.

3) Energy then travels through wires from the TV remote to change channels.

What does a spring do in a battery?

The battery spring is an integral part of your AA batteries, ensuring that you always have the correct polarity when installing them. The springs on each end (positive and negative) ensure that both terminals are installed correctly for proper operation.

The springs are designed that way. Springs work by making contact with both sides of a battery and pulling them together, so it makes sense for one side of each end to be "on" or touching this metal surface. It's also essential for these two ends to touch because if they don't, then the electric charge will leak out.

There are two significant reasons for this:

Reason one is to keep from shorting out your components, and reason two is so you do not have loose connections when removing or installing them.

The spring is not just a placeholder to keep the battery in place. It helps with consistency so that people know which way the battery goes.

Which side of the battery should go on the springs?

Batteries are very dangerous to play with, so if you do not know what you're doing or have any questions about your batteries, please consult an expert before proceeding.

Batteries have a positive terminal and a negative terminal. The negative side of the battery should be touching the spring when installing it.

The purpose of that spring is to ensure that you have the correct polarity when installing the batteries, and it also helps with consistency in knowing which way they go.

How to install batteries correctly?

Installing batteries in the correct way is very important for batteries to work, but it can also be dangerous if not performed incorrectly.

AA, AAA, C and D Batteries

When installing your AA, AAA, C, or D battery, make sure that you insert them with the negative side touching the spring first and then place the positive end on top of it. It's also best practice to hold both ends when inserting them, so they don't get crossed and so that the springs do not touch.

If you are not sure which side should go to the spring, locate the signs in the battery pack. The battery compartment features a plus and minus sign. The negative end has either springs or small metal levers to indicate which side should be facing the positive terminal of the battery in order for it to charge properly.

It is important to make sure that the batteries are correctly aligned. If they are not facing the right direction, there could be consequences such as malfunctioning or leaking dangerous corrosive chemicals.

9 Volts Batteries

A 9volt battery is a small, black cylinder with two snaps on the top. When installing a 9 volts battery, make sure you align the snaps of your 9v battery with those inside the device. The battery compartment shows two snaps with the same feature as the ones on top of the 9volt battery. The male connector from your battery should align with the female counterpart in order to successfully connect them together for use. If you have installed the battery incorrectly, the connectors won't match up, and it won't snap into place. 

Insert the connector side of your 9V battery first, and then tilt it at a 30° angle. Line up the snaps so that they are touching before pressing down on top of the battery until it is snapped into place for good.

Coin and Button Batteries

You may be wondering what the difference is between coin and button batteries. These batteries are small, round, and flat. The difference in these batteries comes with the shape; while both are circular-shaped like coins (or buttons), one has more of an oval than circle appearance so that it can be sturdier for longer wear.

The etching on one side of a coin and button batteries is its positive side, while the clean surface (no marking) is the negative side.

To some devices, the battery compartment is marked with a positive symbol, so make sure to read the battery compartment carefully and put in your new one correctly.

When inserting the coin or button battery, be sure to insert the battery with the positive side up unless otherwise directed. Some devices may not have markings, but you should always assume that when inserting a new battery, it is facing in this direction.

When installing batteries, be careful and make sure you install them correctly. We don't want to damage the device or the batteries, so it's a must to take caution with the installation.

Frequently Asked Questions

Why do batteries go in opposite directions?

Batteries are connected in purpose to produce a higher voltage. The first battery's positive end connects with the second battery's negative terminal.

Do the springs wear out?

The springs in the battery compartment normally last for a long time. But when it reaches the end of its lifespan and cannot hold in a battery anymore, the quality may suffer, and you will need to replace them.

What are anodes and cathodes?

 In a basic battery, the anode is a positive electrode, and a cathode is a negative electrode.

How to determine the positive side of the 18650 battery?

18650 batteries are flat on the top, and the positive side of these batteries is located on one end that is raised a bit. The other end has a flat surface which is the negative side of the battery.

What happens if the batteries are installed the wrong way?

If the batteries are installed in reverse, either one or both of them will likely be damaged, and there is a high chance that it won't work anymore.

There is a potential to burn out the battery and severely damage the battery. You also run the risk of trapping electricity, which can also lead to overheating, fire, or smoke. It's best not to put them in backward.

What should I do if my battery leaks?

As soon as you notice some corrosion on your device, please remove all power sources from the device immediately for safety reasons. Safety first.

Put those old batteries in a plastic bag and recycle them to keep the negative effects of pollution down. Be sure not to touch any leaked battery fluid, as it can be dangerous if you don't wash your hands with soap afterward.

How to dispose of old batteries?

It's important to know the proper disposal of old batteries safely because they contain toxic chemicals like lead, mercury, and nickel which can leak out into soil and water sources when improperly disposed of.

Lead poisoning may cause brain damage in children, so it's important to make sure your home has a proper recycling program for hazardous materials like old electronics, paint cans, household cleaners, pesticides, fertilizers, etc.

Disposing of used batteries at a battery store will give them back their life again and keep them from harming the environment.

To avoid injury from lithium-ion battery leaks, wear safety glasses while handling them and never carry more than one in your pocket or purse because they're sensitive to heat. Make sure you don't leave any unattended either They will explode if left unchecked for long periods of time.

How long does an AA or AAA battery last?

Batteries usually last for about a year or two, but it depends on what you are using them for.

Some people use their batteries continuously while others only sporadically throughout the day, so there is insufficient data to determine an average lifespan.

What are the best brand AAA batteries?

It is hard to say which are the best AAA batteries because they all have their own specifications. But here are a few that are available in the market:

  • ACDelco AAA Batteries
  • Energizer AAA Batteries 
  • Duracell AAA Batteries
  • Panasonic AAA Batteries

In conclusion, batteries are a necessity. They provide power for devices that we depend on in our everyday lives, and they can be difficult to replace if you don't know what you're doing and how its parts, including the battery compartment, work.

You might think the battery compartment is just there to hold the positive and negative sides of the battery together, but actually, it has another vital function. It keeps the negative side of a battery from touching anything metal or conducting electricity. This means if you leave a coin next to your phone with a dead battery, it won't be able to call someone for help.

About the author

Hi, I'm Phil Borges.. thanks for reading.. My wife says I can't shut up about batteries so to save my marriage I've started this blog .. where I'd be ranting about batteries! Please leave a comment if you have any questions, I'm happy to help!

{"email":"Email address invalid","url":"Website address invalid","required":"Required field missing"}
Battery Tools