How to check battery health on Samsung Galaxy phones (and what the result means)
Samsung hides battery health in different places on different phones. Here are the three places to look, and how to read what you find.
Apple puts battery health in one obvious place. Samsung does not, and the answer depends on your phone and its software. Newer Galaxy phones have a built-in health screen, and older ones rely on the Samsung Members app or a hidden test menu. This guide covers every method, shows how to read the results and explains what to do if your battery is weaker than it should be.
Method 1: check in Settings (newer Galaxy phones)
- 1
Open Settings and tap Battery.
On some versions it is called Battery and device care, and then Battery.
- 2
Look for Battery information, Battery health or More battery settings.
Menu names differ by phone and One UI version. Newer One UI releases add a battery health section with a status and, on some models, a capacity percentage.
- 3
Read the result.
A status such as Good means the battery is holding up. A percentage shows how much of the original capacity is left. If you see no health option, use the next method.
Method 2: Samsung Members app
- 1
Open the Samsung Members app.
It comes with most Galaxy phones. If it is missing, install it from the Galaxy Store or Google Play.
- 2
Tap Support, then Phone diagnostics.
On some versions this is under Get help or Diagnostics.
- 3
Tap Battery status, or run the full test.
The app checks the battery and gives a result such as Good or Needs attention.
- 4
Read the details.
Some phones show the charge cycles or battery capacity too.
Method 3: the hidden test menu
Open the Phone app and dial *#0228#. On many Galaxy phones, this shows a battery status screen with the charge level, voltage and temperature. A second code, *#0*#, opens a general test menu on some models. These codes were built for service technicians. They do not show a health percentage, and they may not work on every model or carrier version, but the voltage and temperature readings can show whether a battery is behaving oddly. Do not change any settings in these menus, and just exit when you are done.
How to read the result
- Good or Normal: the battery is working as expected. You may still see a slow loss in capacity over the years.
- Above 80 percent: healthy. Daily battery life should be close to what you remember.
- 70 to 80 percent: noticeably shorter battery life. A replacement is worth planning, especially if you rely on the phone all day.
- Below 70 percent, or marked Weak or Bad: replace the battery. The phone may shut down early or run slowly.
Signs of a worn battery even without a number
- The battery drops from 30 percent to off, or from 100 to 70 quickly.
- The phone shuts down in the cold or under heavy use.
- It gets hot while charging, or charges much more slowly than before.
- The back or screen looks slightly raised, which can mean a swollen battery.
- You need to charge twice a day, with normal use.
Other Android phones
Pixel 8 and later phones have a battery health section in Settings › Battery, and Google shows a status and, on some models, a capacity figure. Phones from OnePlus, Motorola and Xiaomi vary, and some show health in their own battery or device care settings. Third-party apps that claim to show a percentage are often inaccurate, so treat them with care. When in doubt, a repair shop can test a battery in a few minutes.
What to do if the battery is weak
- 1
Rule out software first.
Update the phone, restart it and check for an app using a lot of power. See how to fix a fast-draining Android battery.
- 2
Slow down the wear.
Turn on Protect battery in Settings › Battery › Charging, if your phone has it, and avoid heat.
- 3
Get a replacement quote.
- 4
Compare with upgrading.
If the phone is old or the repair is close to a used replacement, a new phone may be smarter.
Checking a used Galaxy before you buy
Ask the seller to show the battery health screen, or run the Samsung Members test in front of you. A used phone with a weak battery needs a replacement soon, which adds to the cost. Compare the price with a phone that has a healthy battery, and factor in the repair. Also check that the battery is not swollen and that the screen sits flat. For a full list of checks, see how to buy a used phone.
Frequently asked questions
Does Samsung show battery health as a percentage?
Some newer Galaxy phones show a battery health or capacity figure in Settings. Many show only a status such as Good, so the exact number depends on your model and One UI version.
What is a good battery health for a Samsung phone?
Above 80 percent of original capacity is generally healthy. Below that, expect shorter battery life and think about a replacement.
Can I check battery health on an older Galaxy?
Yes. Use the Samsung Members app diagnostics, which shows a battery status on most Galaxy phones, or the test menu opened by a dial code.
How often should I check battery health?
Every few months is plenty, or when you notice the battery draining faster. Check before you buy a used Galaxy, too.
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