Samsung gives you up to three ways to check your Galaxy battery: the official Samsung Members diagnostics, a newer Battery information page in Settings on some models, and Device care. Here is how to use each one, what the results mean, and how to turn on Battery protection so the battery lasts longer.

Method 1: Samsung Members phone diagnostics (all recent Galaxy phones)

This is Samsung's official battery check and works on most Galaxy phones. Samsung Members is preinstalled; if you removed it, reinstall it from the Galaxy Store or Google Play.

  1. Open the Samsung Members app.
  2. Tap the Support tab (in some regions it is under Discover > Diagnostics).
  3. Under Phone diagnostics, tap Get Started, or pick tests yourself.
  4. Let the diagnostics run, then tap Battery status.

What the result means

  • Normal: no issues with the battery.
  • Weak: battery efficiency may have dropped through use or environmental conditions. Battery life will be shorter than new.
  • Bad: battery life has significantly degraded. Samsung advises visiting a Samsung service centre.

Samsung Members does not show a percentage, only these three levels. Samsung notes that menu names and screen layouts vary by model and software version.

Method 2: Battery information in Settings (some models and regions)

Starting with the Galaxy S25 series on One UI 7, Samsung added a page that shows a battery health percentage and cycle count:

  1. Open Settings.
  2. Tap Battery.
  3. Tap Battery information.
  4. Look for Battery health (a percentage), Battery cycle count, and the manufacture and first-use dates.

This page is not on every Galaxy. At launch it appeared on European S25 units first and was missing in some countries, and as of late 2026 some US models such as the Galaxy S24 Ultra still do not show it, even on newer One UI versions. If you only see charge level and capacity, or no Battery information page at all, your model or region does not support it yet. Use Samsung Members instead.

Reading the percentage and cycle count

Battery health is the capacity the battery can hold today compared with when it was new. Samsung does not publish a replacement threshold for phones, but across the industry about 80% is treated as the end of a battery's rated life. The cycle count tells you how much use the battery has had: one cycle is 100% of capacity used in total. Read our cycle count guide for what is normal.

Method 3: Device care diagnostics

On Galaxy phones running Android 12 or later, the same diagnostics are also built into Settings:

  1. Open Settings.
  2. Tap Device care.
  3. Tap Diagnostics, then Phone diagnostics, and run the battery test.

Device care's Battery screen also shows battery usage by app, which helps if your problem is drain rather than wear. See why your battery drains fast on Android.

What about Samsung dialer codes?

You will find codes such as *#0228# shared online as a Samsung battery status screen. Samsung does not document them, reports of what they show disagree, and newer firmware may block them, so we do not recommend relying on one. Samsung Members is the official, supported check.

Turn on Battery protection

Samsung's best tool for battery life is Battery protection, which stops the phone sitting at 100%. On One UI 6.1 or later:

  1. Open Settings > Battery.
  2. Tap Battery protection and turn it on.
  3. Choose an option: Basic, Adaptive or Maximum.
  • Basic: charges to 100%, then only resumes charging when the level drops to 95%, so the battery is not topped up constantly.
  • Adaptive: behaves like Maximum while you are asleep, then charges to 100% shortly before you usually wake up.
  • Maximum: stops charging at 80%. From One UI 7.0, you can choose the limit (80, 85, 90 or 95%), and charging restarts about 2% below it.

You can also reach it from Settings > Device care > Battery, or add a Battery protection tile to Quick settings. On phones before One UI 6.1, look for Protect battery under Settings > Battery (on selected models), which limits the charge to 85%. Samsung notes the options vary by model.

Tips to keep a Galaxy battery healthy

How bCare helps on Samsung

Samsung Members tells you Normal, Weak or Bad, but not how much capacity is left. bCare's battery health score measures the real capacity in mAh from normal 20 to 80% charges, compares it with the design capacity and shows charge cycles and a 14-day trend, on any Galaxy, including models without the Battery information page. If you prefer to unplug yourself rather than use a hard limit, a battery full alarm rings at the level you pick, and the overheat alert warns you when the battery runs hot. bCare's alarm-ready check walks you through notifications, battery optimisation and autostart so alarms keep ringing in the background.