How to Check Battery Health on Android

A phone battery wears out slowly and quietly. One month it lasts the whole working day; a while later it needs a top-up by mid-afternoon and switches itself off in the cold. On iPhones, battery condition sits in one predictable menu. On Android, where many companies make phones, the answer depends on who built yours and which version of the system it runs. The good news is that most modern Android phones can tell you something useful, and a few simple observations fill in the gaps.

What "battery health" actually means

Lithium-ion batteries lose capacity as they go through charge cycles. Battery health compares how much charge the battery can hold today with what it held when new. A healthy battery holds close to its original capacity; a worn one holds noticeably less, so the same day of use drains it faster. Wear is normal and unavoidable, and it speeds up with heat and with long stretches spent at a full or nearly empty charge.

Where to look, phone by phone

Start in Settings

Open Settings and tap Battery. On recent Google Pixel models and a growing number of other phones, there is a Battery health or Battery information entry that shows the condition, sometimes as a percentage of original capacity and sometimes as a simple label such as "Normal". Some phones also list the number of charge cycles under About phone or Battery information. Menu names vary between versions, so the search bar at the top of Settings is your friend: type "battery health".

Samsung Galaxy phones

Samsung places its check in the Samsung Members app, which comes preinstalled on most Galaxy phones. Open the app, look for the Support or Get help section, choose phone diagnostics and run the battery status test. It reports the battery's life as good, normal or weak, along with its capacity.

Other makers

Motorola, OnePlus, Xiaomi and others each have their own diagnostic or "device care" tools, often under Settings > Battery or in a preinstalled support app. The phone's user manual, or the maker's support website, will say where the check lives on your model.

Third-party apps

If your phone shows nothing, battery monitoring apps from the Play Store can estimate capacity by watching how much charge goes in over several full cycles. Treat their numbers as estimates that improve with time, and check the permissions they request before installing; a battery monitor has no reason to read your contacts or messages.

Signs you can see without any tool

• The charge drops in sudden steps, for example from 30% straight to 10%.
• The phone shuts down while the screen still shows charge remaining, especially outdoors in winter.
• It gets warm during light use or while charging normally.
• The back cover or screen has begun to lift or bulge. Stop using and charging the phone in this case and take it to a repair shop promptly, since a swollen battery can be dangerous.

Habits that slow down wear

1. Avoid leaving the phone in hot places such as a car dashboard or under a pillow while charging.
2. Turn on any adaptive or protective charging option your phone offers; many models can pause at around 80% or learn your overnight routine.
3. Use a reputable charger and cable rather than unbranded bargains.
4. Do not worry about occasional full charges; it is constant heat and long periods at the extremes that do the damage.

Running the phone as a mobile hotspot for hours is one of the heavier loads you can put on a battery. If that is part of your working day, our guide to using a phone as a hotspot has tips on doing it without cooking the battery.

Replace the battery or the phone?

A worn battery does not automatically mean a new phone. If the device is otherwise fast, still receives security updates and you are happy with it, a professional battery replacement is usually far cheaper than a new handset. If updates have stopped, the storage is always full and the battery is weak as well, it may be time to compare models instead; our older piece weighing Apple against Samsung lays out the questions that still apply.

For business phones, add battery condition to the list you check when a device changes hands between staff. A five-minute look now can save a dead phone at the worst possible moment.