Where to find battery health information on Android

Android does not show battery health in the same way iPhones do. Most Android phones do not display a single "battery health" percentage in Settings. Instead, you see current battery percentage and usage patterns. Some manufacturers — Samsung, Google, OnePlus — include limited battery information in their own settings apps, but the data is often incomplete or vague.

The most reliable way to check battery condition on Android is through the hidden diagnostic menu, which works on most phones. You access this by opening the Phone app (the one you use to make calls), typing a code, and viewing the battery report that appears. The code varies slightly by manufacturer, but the process is straightforward.

Key Takeaways

  • Most Android phones hide battery health data, but you can access it through the Phone app's diagnostic menu using a manufacturer-specific code.
  • Samsung phones show battery information under Settings > Device Care > Battery, though the data is limited compared to what the diagnostic menu reveals.
  • Google Pixel phones display battery usage by app in Settings > Battery, but do not show overall battery health without using the diagnostic code.
  • The diagnostic menu shows voltage, temperature, and cycle count — the real indicators of whether your battery is degrading.
  • If your phone is less than two years old and the battery drains faster than before, the problem is usually software, not the battery itself.

Using the diagnostic menu on most Android phones

Open the Phone app on your Android device — the one with a phone receiver icon that you use to dial numbers. Do not use Google Phone or any third-party calling app; use the default phone dialer that came with your phone.

Type this code into the dial pad: *#*#4636#*#*. Press the call button or wait a moment. A menu titled "Testing" or "Device Information" should appear automatically. If nothing happens, your phone manufacturer may use a different code or may not support this menu.

Tap Battery Information from the menu. You will see several values: Health (should say "Good"), Status (should say "Discharging" or "Charging"), Temperature in Celsius, Voltage in millivolts, and Cycle Count. A cycle count below 500 on a phone less than two years old is normal. A cycle count above 1000 suggests heavy use or possible battery degradation.

If the menu does not appear, exit and try these alternative codes: *#0228# (Samsung), *#*#2664#*#* (some LG models), or *#*#0842#*#* (HTC). Not all codes work on all phones.

Checking battery information on Samsung phones

Samsung devices include a dedicated battery section in Settings. Open Settings, then tap Device Care (or Battery on older models). Select Battery from the menu. You will see your current battery percentage and a list of apps using the most power.

This view does not show battery health directly. To see actual health data on Samsung, use the diagnostic code *#0228# in the Phone app. This opens Samsung's battery test menu and displays voltage, temperature, and cycle count. Samsung also sometimes shows a "Battery Status" line that says "Good" or "Normal" — this is the closest Samsung comes to a health rating in the standard settings.

Checking battery information on Google Pixel phones

Google Pixel phones show battery usage information in Settings > Battery. Tap Battery Usage to see which apps have consumed the most power since your last full charge. This tells you what is draining your battery, but not whether the battery itself is healthy.

For actual battery health on Pixel, use the diagnostic code *#*#4636#*#* in the Phone app, then select Battery Information. Google does not advertise this menu, but it works on all Pixel models. The voltage and cycle count here are the real indicators of battery condition.

What the battery data actually means

Health: Should read "Good" or "Normal." If it says "Overheat" or "Dead," your battery has a real problem and may need replacement.

Voltage: Measured in millivolts (mV). A healthy battery typically shows between 4000 and 4400 mV when fully charged. Voltage below 3500 mV suggests the battery is degraded and may not hold a charge as long as it did when new.

Temperature: Shown in Celsius. Normal operating temperature is 20 to 35°C. If temperature reads above 40°C while the phone is idle, the battery or charger may be faulty.

Cycle Count: The number of times the battery has been charged from 0 to 100 percent. A typical smartphone battery is rated for 300 to 500 full cycles before capacity drops noticeably. If your phone is one year old and the cycle count is already 800, the battery is wearing faster than normal — usually because of heavy use, frequent fast charging, or heat exposure.

When fast drain is the battery and when it is not

If your phone drains quickly, the problem is usually not the battery. Most fast-drain complaints come from a single app running in the background, a new Android update that has not finished indexing, or a screen that is set too bright.

Check Settings > Battery > Battery Usage to see which apps consumed power since your last charge. If one app is using more than 30 percent of the battery and you do not use it often, uninstall it or disable background activity. If the top app is "Android System" or "Screen," the issue is a system process or display brightness, not the battery itself.

The battery is the actual problem only if voltage is below 3500 mV, cycle count is very high for the phone's age, or the phone shuts down at 20 percent battery remaining. In those cases, the battery has genuinely degraded and replacement is the only fix.

Frequently Asked Questions

Why does my Android phone not show battery health like an iPhone does?

Android manufacturers do not standardize battery health reporting the way Apple does. Each maker uses different methods, and most keep the data hidden in diagnostic menus rather than in plain Settings. Google and Samsung could show this information easily but choose not to, likely to avoid warranty claims based on battery age.

Is it safe to use the diagnostic code to check battery information?

Yes. The diagnostic menu is read-only — you cannot change anything from it. Typing the code and viewing battery information will not harm your phone or void your warranty. Do not tap any buttons other than "Battery Information" unless you know what you are doing.

What should I do if my battery health says "Overheat"?

Stop using the phone when ready and let it cool to room temperature. Do not charge it. If the temperature stays high or the health status does not improve after cooling, the battery or charging circuit may be faulty. Contact the manufacturer or visit a repair shop — do not attempt to replace the battery yourself.

Can I improve my battery health after it has degraded?

No. Battery degradation is chemical and irreversible. Once a lithium battery has lost capacity, it cannot be restored by software updates, charging habits, or any other method. The only fix is replacement. However, you can slow future degradation by avoiding heat, not leaving the phone at 100 percent charge for long periods, and avoiding fast charging every day.

How often should I check my battery health?

Once every six months is enough for most users. If your phone is less than two years old and drains normally, checking battery health is not urgent. Check it if you notice sudden changes in battery life, if the phone feels hot during normal use, or if you are considering selling or trading in the phone.