You are using your computer, you check the battery status and it tells you that the battery is at 50%, which makes you think the battery has more charge in it. A 50% battery percentage means that the battery is at half of its current battery life. If your battery life is 75%, a 50% charge means your battery’s real charge is at 37.5%.

What happens when you are using your laptop and it shuts down by itself at 50% battery charge? Is the battery no longer capable of powering the laptop? Is it a software issue? How can you help prolong your battery life? Is it possible to revive a dead battery?

Laptop shutdown with the battery still at 50%

This is a common occurrence for people who are using a late model computer and those who don’t take proper care of their laptop battery.

 

The first thing to consider when faced with this issue is, how long have you had your laptop and its battery? A laptop battery has an average lifespan of 2 -3 years, so if your laptop battery starts failing after 2 -3 years of use, then you know that it is normal. However, this does not mean that you should accept it like that. There are ways to recalibrate a battery that is losing its lifespan.

 

Apart from the time of use of the battery, some other factors can reduce the quality and lifespan of your computer’s battery. Examples are using a short-circuit socket to charge, overheating, overcharging your battery, poor handling of the battery, and so on.

 

Additionally, your computer can start having battery problems after a software or windows update. Program updates that require a huge amount of battery usage will decrease the battery power, this is why when you are about to install software or update windows, you will sometimes be advised to keep your laptop charger plugged in.

 

My Laptop battery dies at 50% – what should I do?

The very first thing to do is to run a diagnostic on the battery. Check how to run a Windows diagnostic here. If the result turns out to be okay, then you may need to bring out the big guns.

 

While the diagnostic test has assured you that your battery is still good, you still have to remove all doubt by checking the battery drivers and ensuring that they are up to date. If they are not, you can update them from your Device Manager menu.

 

If nothing changes after this, move on to uninstall Microsoft ACPI-Compliant Control from Device Manager. After this is done, shut down your laptop when the battery is at 15%. Wait 30 minutes before powering it back on, then reinstall Microsoft ACPI-Compliant Control on Device Manager. Restart your laptop to complete this fix. Everything should be fine now.

 

How to improve your laptop battery performance

A lot of the normal things we do are responsible for the loss of battery capacity and performance. Overcharging your battery, exposing the battery to high temperatures (especially overheating), using your laptop until it shuts down from low battery, etc.

 

Here are a few tips on how to avoid low battery performance:

Reduce use of battery power

You can easily improve your battery power by taking steps to conserve its charge. Some of the necessary steps are reducing screen brightness and closing software or applications that are not in use. Even when applications are minimized they still consume battery power, and if you have too many programs open, it will put more strain on your battery thereby reducing its capacity.

Adjust and choose a good power plan.

Most people don’t bother changing their power plan to one that is more efficient and allows them to conserve battery power. An inefficient power plan leaks battery power and ensures that your battery capacity is strained even for the smallest tasks. You should always choose Windows recommended power plan, and also turn on the battery saver option.

 

Maintain a stable charge-discharge balance

The truth of the matter is that the capacity of your laptop battery starts reducing the moment it has gone through a charge and discharge cycle. Excessively charging your laptop battery is not a good way of conserving the battery’s capacity, also using the battery until it is near depletion places too much burden on the battery. This means that whether you charge it or not charge it, your battery capacity will be reduced.

However, you can slow this effect by setting a point for your laptop where the battery saver mode automatically kicks in to protect and conserve battery power. It is also essential that you do not expose your battery to high temperatures (especially from overcharging and overheating). You should also reduce the rate at which you use your computer for tasks that will put a lot of burden on the laptop’s processor. This includes 3-D games, solving complex mathematics (like cryptography), and so on.

 

Do not remove your laptop battery while charging

Another thing that can damage your laptop battery is removing the battery while it is charging. Apart from the very serious possibility of an electric shock, the sudden loss of charge can short-circuit the battery, making it lose its power and capacity.

If you want to remove your laptop battery, you have to first remove the charging cord from its socket, and shut down the computer. It is only after this is done that you can safely remove the battery from its compartment.

 

Power surges

The safest way to charge your computer, and indeed any appliance at all, is to use a circuit breaker to ensure the computer is protected from sudden power surges. Power surges can feed your battery more power than it can store at a time, making it lose some of its capacity to hold more power and last longer.

Conclusion

If you have a computer that dies while its battery is still at 50%, the above steps might assist you in diagnosing the problem. The first thing to do is run a diagnostic on the battery to ascertain if it is still ok or not. If it is, then you can proceed to more technical solutions like uninstalling and reinstalling Microsoft ACPI – Compliant Control. If the situation does not change, then it may be time to buy a new battery for your computer.

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