Quick Summary
If you want to check battery health on Android, you don't need to download a single app. Every major Android phone now hides a built-in battery health screen — you just need to know where to tap, and this guide shows you exactly where, whether you own a Samsung, a Pixel, a OnePlus, or a Xiaomi phone.
Why You Should Check Battery Health on Android Regularly
Your phone's battery is a chemical part that wears down over time, the same way a car tire wears down with every mile. A battery that started at 100% capacity slowly loses its ability to hold a charge, and after a couple of years it might only reach 80% of its original capacity. That means shorter screen time, random shutdowns at 20%, and a phone that feels slower than it used to (often because Battery Saver kicks in more aggressively). Checking your battery health tells you whether your phone is aging normally or whether it's time to plan for a replacement — long before you're stuck with a dead phone at the worst possible moment.
How to Check Battery Health on Android With Built-In Settings
Most 2026 Android phones now show battery health directly in Settings, no third-party app required. The exact path depends on your phone's brand:
- Google Pixel (Pixel 8a and newer): Open Settings, tap Battery, then tap Battery Health. You'll see a status of "Normal" or "Reduced," plus the battery's manufacture date and cycle count.
- Samsung (One UI 7 and newer): Open Settings, tap Battery, scroll down and tap Battery Information. Samsung shows an exact health percentage along with total charge cycles.
- Xiaomi (HyperOS): Open Settings, tap Battery, then tap Battery Protection. The health percentage appears under "Battery Info."
- OnePlus (OxygenOS): Open Settings, tap Battery, then Battery Health Engine to view your current battery condition and optimization status.
If your phone doesn't show any of these menus, it's likely running an older Android version — skip to the secret code method below.
How to Check Battery Health on Android With a Secret Code
Many Android phones — especially older Pixel, OnePlus, and Motorola models — hide a diagnostic menu behind a dial-pad code. This works even if your phone has no dedicated battery health screen:
- Open your phone's Phone (dialer) app.
- Type *#*#4636#*#* exactly as shown. The menu should open automatically.
- Tap Battery Information.
- Look for fields labeled "battery health," "battery technology," and "battery temperature."
If nothing happens when you dial the code, your manufacturer has disabled this hidden menu, and you should use one of the free apps listed further down instead.
What Your Battery Health Percentage Actually Means
Once you have a number, here's how to read it:
- 90–100%: Your battery is essentially new and performing at full capacity.
- 80–89%: Normal wear for a phone that's one to two years old — no action needed.
- Below 80%: Google and Samsung both classify this as "Reduced." You'll likely notice faster drain and may want to budget for a battery replacement.
- Below 70%: Consider a replacement soon, especially if your phone randomly shuts off before it hits 0%.
Cycle count matters too — most modern lithium-ion batteries are rated for 500–800 full charge cycles before they dip below 80% health, so a two-year-old phone charged nightly is right on schedule for some wear.
Free Apps to Double-Check Battery Health
If your phone hides the built-in menu, these free options fill the gap:
- AccuBattery: Tracks charging habits and estimates real battery capacity over time.
- Battery Guru: Monitors performance and flags apps draining your battery fastest.
- CPU-Z: Shows battery voltage, temperature, and health status with no ads.
Give any of these a few days of normal use before trusting the number — battery estimation apps need charge cycles to calibrate accurately.
When You Should Actually Worry About Battery Health
A dropping percentage alone isn't an emergency. Pay closer attention if you notice your phone getting hot during normal use, the battery visibly swelling (stop using the phone immediately if this happens), or the phone shutting down well above 0%. Any of these, combined with health below 80%, is a real signal to get the battery replaced by a professional rather than just living with shorter battery life. If your phone is also running slow in general, it's worth pairing a battery check with a broader cleanup — see our guide on recovering deleted photos on your phone for related storage and performance housekeeping.
Final Thoughts
You don't need a paid diagnostic tool to check battery health on Android — the information is already sitting in your Settings app or one dial-pad code away. Make it a habit to check every few months, especially before a long trip, so a fading battery never catches you off guard. While you're optimizing your phone, it's also worth reviewing how to make your WiFi faster, since a strong connection reduces how hard your battery has to work searching for signal. And if you ever need to document a battery health reading to send to support, our guide on taking a scrolling screenshot comes in handy. For the official manufacturer explanation of battery health status, see Google's Pixel battery help page.
Frequently Asked Questions
Does checking battery health drain my battery?
No. Viewing battery health information uses a negligible amount of power — checking it as often as you like has no meaningful effect on your battery's lifespan.
Why don't I see a Battery Health option in my Settings?
Not every Android version or manufacturer includes this menu. If it's missing, try the *#*#4636#*#* code or install one of the free apps listed above.
Can I replace an Android battery myself?
It's possible on some models, but modern phones are glued shut and require heat and specialized tools. Unless you're experienced with phone repair, it's safer and often cheaper in the long run to use an authorized repair service.
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