How to Know If Laptop Battery is Dead? Is It’s Time for a Replacement?

Laptop batteries are one of the most common reasons for laptop failure, but there are ways to know if you need a replacement. A dead battery can cause your laptop to work improperly or not at all, depending on its severity. The first step is about how to know if laptop battery is dead. We’ve got you covered! The next step is finding the right replacement laptop battery for you.

How To Know If Laptop Battery Is Dead?

If your laptop is not charging or if the charging light is not turning on, the most likely reason is that the battery is dead. You can tell if the battery is dead by plugging it in and seeing if the charging icon pops up on the screen. The icon will pop up if the laptop is plugged in and charging.

How To Know If Laptop Battery Is Dead

If your laptop charger won’t do it, many online vendors offer battery analyzers that will tell you if your laptop battery is completely dead or not. One of these battery analyzers known as BatteryEnds died (BEK). You can get it for most Laptops by doing a search on Google.

Some people say that the best thing to do if your laptop battery is dead is to buy a new one. But, this is a false statement. How do you know if the laptop battery is actually dead though? In the same way, you can tell if the overhead light is on in your car.

If nobody tells you the fact that your laptop battery is dead, you might think the most logical thing to do is to take it to the nearest electronics store and buy a brand new laptop. But by doing so, you’re making yourself a vulnerable victim. Because when the laptop is dead, you can’t find its charger in your bag and because you’re heading to the computer store, a thief is surely waiting for the opportunity.

To avoid being robbed and to avoid leaving your laptop unattended while charging, lock your bootloader (the first thing your operating system starts upon booting your PC) using a secure bootloader. This is the same feature that prevents accidental or malicious software from being executed when you start your PC for the first time.

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Why Laptop Battery Is Dead?

One of the most common problems with laptops is the battery. The battery will stop charging after a while. Here are some reasons why it happens:

1. You might have left your computer plugged in for a long time, which eventually ruins the battery’s capacity.

2. The minuscule amount of juice squeezed out of your battery during charging has depleted it completely. I made a research project on this topic and here are some of the findings.

A forgotten charger turned off the adapter, or the wrong voltage can also wreak havoc on your battery. Your computer will never start charging again until the problem is addressed. Laptops also become totally dead if the CPU fails, as it often does. In this case, the only way to get your battery back to life is a hard reset, which consoles the CPU and disables any extra working.

Then there’s depleting of residual charge(ROC). If you are battling laptop misbehaviors or have to charge your machine frequently, then your battery could suffer damage. However, this condition does not indicate that your battery is dead.

I did a thorough online search on the subject and learned that Corexit Gel is a brand name used in medicine for depleting the battery’s capacity. ROC also negatively impacts your laptop’s performance. Not to worry though, ROC can only be measured in lab conditions. This means that, in order to avoid battery problems, do not abuse your laptop.

As you may already know, a critical part of computing is the battery. In order to preserve your battery, follow these tips for maximum battery health.

How can you tell if your battery is still full from the moment when you turned it on?

Don’t plug your laptop into a charger until your battery reaches 50% to 75% of its full capacity.

According to PC Magazine, laptop manufacturers recommend leaving your laptop plugged in for the first few hours of the day before you leave your house.

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What To Do When Laptop Battery Is Dead?

The laptop is one of the best inventions of this century. It has changed the way we live and work. With the laptop, we can work from anywhere. We can work on the go. The only problem with laptops is that they need to be get charged often. If you keep your laptop plugged in all the time, its battery will slowly deplete. It is important to know when your laptop battery is dead. It will pass out of its maximum charge, which can also be detected by simple software.

Laptop batteries are designed to be replaced every 6–12 months. So, if your laptop battery can’t be charged, it is probably dead. The software monitors the temperature, workload, and many other factors. It can identify when the battery is at its minimal level and go into power-saving mode to prevent any damage. The software will automatically go into thermal shutdown mode if the maximum battery charge is reached.

If you are worried about your laptop battery cooling fan running while charging, fix that problem first. Never use a laptop battery with a fan. If the laptop battery has a fan, you will damage your laptop battery.

Since many people connect their laptop to the power supply while it is charging, the power supply can overheat and damage the laptop battery. Make sure that you connect your laptop to the power supply when it is completely charged.

If you run your laptop for some time, make sure that you connect it to the power supply. It is said that running your laptop for some time may damage the internal components and cause a failure of the battery. If you notice that the laptop battery has failed, you can often recover by completely emptying your battery before reconnecting.

Wondering how to recover your laptop battery when it reaches capacity? Try this. Unplug your laptop from the dock or wherever it is plugged in and open the laptop’s battery page. A comprehensive list of supported operating systems and supported apps are provided.

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How To Fix Laptop Battery?

You should follow these steps to fix a laptop battery:

  • Disconnect the battery and power adapter from the laptop, and then clean the metal contact areas on the battery. Use an eraser or a can of compressed air to clean the contact points.
  • Clean the metal contact areas on the laptop, and then reconnect the battery to the laptop.
  • Check the battery for signs of damage or swelling.
  • If the battery still has some life left in it, squeeze the thin end of the battery. And if the battery is still twitching, throw it away and get a brand new one.

If your laptop has a battery that is installed in the wrong way, it could be a sign of jammed charging pins. Unplug the battery, prepare a small container with distilled water and a paper towel, and sprinkle salt on both sides of the charging pin. Let it sit for a few minutes, then plug in the laptop.

If the laptop battery is installed the right way, it means that the charging pins are properly connected to the electronic circuit.

When charging the battery, make sure the charging terminal is on the top side of the battery. The pins are usually soldered to the side.

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How To Manage Your Laptop Battery

If your laptop battery is becoming weak, your preference may be power saving or power hogging. In this case, you can always opt for power-saving mode in your BIOS. In this mode, your laptop will save battery power whenever you turn the screen on.

Usually, when you turn on your screen, the laptop will switch to high power-saving mode. But because you operate your laptop from your mobile phone, you will get maximum battery life when you use your laptop the entire day long.

In this mode, you can customize your battery settings in your bios. To get the BIOS settings, open your battery utility and go to advanced settings.


Energy Management Considerations: Power management has specified energy conserving settings, such as sleep, hibernate, and display auto-off.The laptop battery may not have sufficient power to meet these conserving settings.

What happens in low power modes: Laptop will save battery power when you are using it during low power mode. But this mode may not give you the best battery life. The situation becomes worse because a lot of power management features couldn’t be activated in low power mode.

When your battery is low and low power saving mode can’t save the power, your battery will enter a lower power-saving mode. When your battery hits its operating temperature, this mode will turn on. You can customize your laptop battery settings in BIOS.

Read Also: How To Turn On HP Laptop Without Power Button?


Many people don’t know how to tell if the laptop battery is dead, but it’s easy for you after reading this article. Now you can tell whether your battery will go bad or not. You will also have a way to fix it if the problem comes up again and again.