How to Check Battery Health on Android

One of the frustrations Android users have compared to iPhone owners is that battery health information is not always front and centre in the settings menu. Apple shows Maximum Capacity clearly in one place; Android manufacturers each do it differently, and some entry-level phones do not show it at all. At our Keshavpura shop we use professional tools to read battery health accurately, but there are several things you can check yourself first.

Method 1: Built-in Settings (Samsung, OnePlus, and Some Others)

Several manufacturers have added battery diagnostics directly to their settings menus:

• Samsung — Go to Settings, then Battery and Device Care, then Diagnostics, then Phone Diagnostics. This runs a test that includes battery status. Some Samsung models also show a basic "Good / Normal / Replace" status.
• OnePlus — Go to Settings, then Battery, then Battery Health. This shows a percentage similar to iPhone's Maximum Capacity display.
• Xiaomi / Redmi / MIUI — Go to Settings, then Battery. You may see a capacity indicator on some MIUI versions. Alternatively, dial *#*#6485#*#* on some Redmi models to access a hardware information page that lists battery capacity.
• Realme / ColorOS — Go to Settings, then Battery, then Battery Health. Realme has added this in recent ColorOS versions.

If your phone does not show battery health directly, try the methods below.

Method 2: Dial Codes for Hardware Info

Some Android phones respond to diagnostic dial codes that display internal hardware readings. Open the phone app and dial:

• *#*#4636#*#* — Works on many Android phones. Goes to a Testing menu that includes Battery Information, showing current charge level, voltage, temperature, and sometimes capacity.
• *#*#6485#*#* — Works on some Xiaomi and Redmi devices; shows battery capacity in mAh relative to the design capacity.

These codes do not work on all phones — whether they work depends on the manufacturer and Android version. If the code does nothing, try Method 3.

Method 3: Third-Party Apps

Several reputable battery health apps read data from Android's battery API. We recommend AccuBattery as a trustworthy option — it reads battery capacity over time (not instantly on first launch) by analysing charge cycles, and gives an accurate picture of your battery's current health percentage and remaining mAh capacity. Avoid apps that claim to show 100% health instantly or that offer "battery boost" features — these are either inaccurate or unnecessary.

AccuBattery needs a week or two of data before its health reading becomes reliable. Install it, charge and discharge normally, and check back after several cycles.

What the Numbers Mean

Professional Battery Testing at Our Shop

If you want an accurate, model-specific reading rather than an app estimate, bring your phone to our Keshavpura centre. We use diagnostic tools that read the battery's design capacity versus current capacity directly from the battery management IC — the same method manufacturers use. This gives you a precise percentage and a clear recommendation on whether replacement is worth it for your phone and usage pattern.

Coaching students in Kota who rely on their phones throughout long study days often come to us after noticing their battery no longer lasts through the day. A quick free check tells you whether a software tweak is enough or a new battery will genuinely help. There is no charge for the diagnosis.

How to Preserve Battery Health Going Forward

Avoid charging in very hot environments — heat is the main driver of battery degradation. Keeping the phone between 20% and 80% charge for daily use reduces stress on the cell. Use the original or a quality fast charger, and enable optimised charging if your phone offers it — this learns your schedule and slows the final charge phase to reduce heat build-up at 100%.