Have you ever woken up to discover that your Android battery went from 80 or 90% to 50% the second you fell asleep? You are definitely not alone. Battery drain overnight is a pretty common issue, but it doesn’t always mean that you should throw your phone away and buy a new one in its place.
There are quite a few reasons why Android battery was draining overnight, and some of them can be solved right now.
I’ll walk you through all the major possibilities and all the fixes for battery draining overnight in Android phones.
How Much Battery Drain Is Considered Normal Overnight?
The first thing you need to understand is, How much battery drain overnight is considered normal?
Well, in reality there is no definite answer to this question, but I can give you a rough estimation.
Battery drain overnight in Android phones in the range of 2% to 8% should be acceptable, depending on what phone you have.
The reason for that is quite simple. Even when you are asleep, your phone is still running, and it has to do certain background processes.
Now, a battery drain of 15%, 20%, 30%, or even more, is already a lot, and most likely there is an issue that needs fixing.
First thing first, we have to figure out what the cause of battery drain overnight is
Check Battery Usage
The first thing you want to do is check battery usage and locate what is causing the battery drain. There is a built-in battery usage monitor that comes with nearly all Android phones. To access it, simply go to
Settings → Battery → Battery Usage
The name of this setting may vary depending on the manufacturer and the version of Android you are running. From here, you want to locate what is causing your battery to drain.
If there is an app that you feel is using too much battery, you can prevent it from running in the background.
I suggest restricting background activity for apps that are not necessary. If an app is using a lot of battery, maybe it is time to update it or simply remove it from your phone.
Weak Mobile Signal Drains Battery Overnight
One of the most common reasons why phone battery drains overnight is a weak mobile signal.
A lot of Android phones nowadays suffer from bad antenna reception, and it can really hurt the battery.
What happens is that the phone tries to find a network to connect to, and it keeps looking until it finds one. This process alone can drain your battery, especially when it happens every night while you are sleeping.
This reason is especially applicable if you spend the night somewhere with a known bad signal.
What can you do about it?
The easiest solution is to put your phone in Airplane Mode before going to sleep. Of course, you won’t be able to receive any calls or messages unless you manually allow Wi-Fi to be on. The easiest way to test if it really is the cellular connection that is draining your battery is to put your phone in Airplane Mode overnight and see if the issue is resolved.
I wouldn’t recommend leaving your phone in Airplane Mode unless you really need it. If you are in a place with a bad signal, you can always try to place your device closer to a window or a spot in the house that is known for having better reception. You can also try connecting to Wi-Fi if that is an option, as a Wi-Fi connection will typically have a better signal.
Background Apps
Sometimes certain Android apps are just battery vampires.
They run in the background and perform certain actions without you even noticing. These can be social media apps, instant messengers, cloud storage apps, navigation services, and much more.
If you notice that one particular app is using a lot of battery, you should consider updating it. Sometimes these apps have a bug that causes them to use more battery than they should. If that doesn’t fix the issue, you can always restrict its background activity in the settings.
Do not restrict background activity for system apps, as that might do more harm than good. Just make sure that you know what each app does before restricting its activity.
If you are really unsure what each app does, you can always go to Settings → Apps, find the application you are interested in, and click on More → Permissions. From here, you can see what each app has access to on your phone, which will give you a fair idea of what it is used for.
Location Services
Location services on your Android phone can also cause battery drain. This is especially true if you have apps that constantly ask for your location.
Apps like Maps, Weather, and some social media apps are some of the biggest culprits when it comes to battery drain and location services. To check which apps have access to your location, go to
Settings → Location → App permissions
From here you can turn off location services for those particular apps if they are not absolutely necessary.
Always-On Display and Other Features
Your Android phone has a number of battery-draining features, and they can all combine to give you a surprisingly low battery percentage in the morning.
Some of these battery-draining features are:
• Always-On Display
• High brightness
• High refresh rate
• Bluetooth
• Mobile hotspot
• NFC
• Location tracking
• Background syncing
• Background notifications
• Wi-Fi scanning
You don’t have to disable all of these features – just the ones that you don’t use often.
Old Battery
If your phone is several years old and the battery seems to drain faster than it used to, it might be that the battery has simply reached the end of its lifespan.
Batteries in smartphones are made of lithium and they degrade over time, losing their capacity to hold a charge.
Here are some symptoms that point to an unhealthy battery
• Percentages drop unexpectedly fast
• Phone suddenly powers down
• Percentages jump unexpectedly
• Phone gets excessively hot
• Phone only lasts for a couple of hours when it used to last for days previously
If you notice some of these issues, it is a good idea to have your battery tested by a professional.
Restart Your Phone
A simple restart can do wonders for Android phones. It allows the phone to restart and re-initialize incorrectly initialized processes.
If your phone suddenly started to lose battery rapidly, it might have an incorrectly initialized process that is using up the battery. Restart your phone and wait for a few hours to see if the rapid battery drain has stopped.
Update Applications and Android
Bugs in the software can also lead to rapid battery drain. Make sure that your phone has the latest software update installed.
To do that, go to
Settings → System → Advanced → System Update
If there is an update available, install it right away. It is always a good idea to update your phone at least once a month to make sure that there are no annoying bugs.
Another thing you want to do is update all of your apps. To update your apps go to Google Play Store → Menu → My apps & games. Make sure that all of your apps are updated. Developers are constantly fixing bugs and issues, so it is always a good idea to update your apps frequently.
However, if you notice rapid battery drain right after an update, do not jump to conclusions. Wait for a few days and see if the issue resolves itself before you try to update the app again.
Overnight Test
One of the best things that you can do is run an overnight test. This test will tell you what the problem really is.
Before you go to sleep charge your phone to around 80 or 90%. Note the battery percentage and make sure that nothing unnecessary is running in the background. The next day when you wake up, check the battery percentage again. Ideally, the phone should not have discharged more than 10%.
If you are going to do this test, be sure to repeat it a few times. The best way to do this is to minimize background processes as much as possible, and try turning off Bluetooth, location services, and anything else unnecessary.
If you notice that the battery only drains significantly when you turn on the cellular connection, you might want to try running the test again but putting your phone in Airplane Mode this time. If you don’t need cellular connection, you can always enable Wi-Fi while in Airplane Mode.
This should minimize the possibility of cellular connection being the reason for rapid battery drainage.
Frequently Asked Questions
Why does my Android phone lose 20% battery overnight?
20% battery loss overnight is a large number, and there are several reasons for that.
It can be a weak mobile signal, background processes, location services, apps that are actively using the phone and draining the battery, or even an old battery.
Should I turn off my phone every night?
You might want to try restarting your phone every night. This will clear out any background processes that may be running.
Does Airplane Mode save battery overnight?
Yes, it does. Leaving your phone in Airplane Mode will disable any cellular connections and stop your phone from trying to find a network to connect to which will definitely save some battery.
Does charging my phone overnight ruin the battery?
Charging your phone overnight will not ruin the battery, but it will shorten the lifespan of the battery considerably. Some people even use special battery saving modes to prolong battery life.
Final Thoughts
So, there you have it. If your Android battery was draining overnight, you now know the possible causes of rapid battery drain.
The most common reason is background processes.
If none of those reasons apply to you, or if none of those fixes worked, it might be that your battery is simply old and worn out, and it is time to replace it.
The best thing to do is to first check the battery usage and see what applications are using the battery. Then, go through the list of potential causes and see if any of them apply to your situation.
If none of those solutions work, you can always try replacing the battery. The most effective way to find the cause of rapid battery drain is to go step by step and try each solution separately. That way you will know exactly which solution had the biggest impact and what was causing the battery to drain rapidly. With a few small adjustments, you can greatly extend the battery life of your Android phone.