Checking the battery status of Xiaomi Redmi 4X: from simple methods to hidden MIUI features

Why Redmi 4X Battery Is Draining Faster and How to Fix It

Xiaomi Redmi 4X (codenamed santoni) was released in 2017, and even after 7 years remains a popular budget device. However, over time, owners face a typical problem: the battery at 4100 mAh keeps the charge worse. The cause can be both natural wear of the lithium-ion battery and software errors MIUI. In this article, we will discuss 5 working ways to check the status of the battery – from standard tools to hidden engineering menus.

It's important to understand that if a phone runs out in 4-5 hours with moderate use, it's not always the battery that's to blame. Often the problem lies in the background of applications, incorrect energy saving settings, or even viruses. So diagnostics should start with software analysis, and then move on to hardware tests.

We won’t suggest you disassemble your phone or use dangerous methods like fastboot — all methods are safe and tested on the Redmi 4X with MIUI 9-14 firmware. If after checking it turns out that the battery is worn out by 50% or more, at the end of the article you will find tips for replacing or extending its life.

Method 1: Built-in MIUI statistics - quick check without software

The easiest way is to use the built-in MIUI tools, which will show not only the current wear and tear of the battery, but also which applications use up the most power.

1. Open Settings → Battery and Performance.
2. Slip on the icon “Battery usage statistics” (graph with percentages).
3. Scroll down to the Battery Status block.

Here you will see two key parameters:

• 🔋 Residual capacity – the actual battery capacity per mAh (e.g. 3200 instead of 4100).
• ⚡ Charging cycles – how many times the battery has been discharged 100% and charged back.

If the residual capacity is below 2500 mAh, the battery is critically worn out and needs to be replaced. The normal rate for a 3-4-year-old Redmi 4X is 3000-3500 mAh. Note that some firmware may not have this partition.

💡

If you see an application with an abnormally high consumption (for example, 30% in 1 hour) in the battery statistics, try clearing its cache in Settings → Applications or disable auto-start.

Method 2: Secret codes for diagnosing batteries

Smartphone makers, including Xiaomi, hide engineering menus that allow for detailed hardware information. There are two key codes running for the Redmi 4X:

1. General battery information: ##4636## After entering, select "Battery Information: 📊 Charge level (%) – should coincide with the indicator in the status bar. 🔌 Power supply – if the phone is connected to the charger, here will be USB or AC. 🌡️ Temperature - normal 25-40°C. Exceeding 45°C dangerously!

Test of hardware components

##6484##

In the Manual Test menu, find the Battery item – it will show voltage (voltage) and charging status.

⚠️ Warning: Don't type random engineering codes! Some of them (e.g. ##7780###) can reset your phone to factory settings.

Method 3: Applications for deep diagnostics (AccuBattery, CPU-Z)

Standard MIUI tools provide limited information, and for detailed analysis, we recommend installing third-party utilities:

How to use AccuBattery (the most accurate option):

1. Install the app from Google Play.
2. Charge your phone to 100% and disconnect from the network.
3. Use your smartphone as usual until the charge drops to 15-20%.
4. In the Health section, you will see a wear score (e.g. 85% – Good).

Instructions:

1. Turn on "Debugging by" USB» In Settings → The phone. → Version. MIUI (Tap 7 times according to version, then return to Additional settings → For developers).
2. Connect Redmi 4X to your computer and confirm debugging permission.
3. Open the command line (or Terminal) and type in: adb shell dumpsys battery
4. In the conclusion, find the lines: level: 85 - current charge in %. voltage: 4 - voltage (for example, 4.2 V when fully charged). temperature: 300 - temperature in tenths of °C (300 = 30 °C).

⚠️ Warning: If the battery voltage at 100% charge is below 4.0V, it's a sign of severe wear.Redmi's Norm 4X — 4.2–4.35.

Method 5: Visual inspection and multimeter test (for confident users)

If the software methods show critical wear and tear, but you doubt the accuracy, you can physically check the battery.

1. Visual examination: 🔍 Remove the back cover (on Redmi) 4X It is removable, but requires a mediator or a plastic card). 🚨 Pay attention to the bloating of the battery - if the case is deformed, you can not continue using. 🔌 Check the contacts of the battery for oxidation (green plaque).
2. Multimeter check: 📊 Transfer the multimeter to constant voltage measurement mode (DCV, 20 V). 🔴 Connect the red probe to the battery plus contact, black to the minus contact. 📉 Normal voltage: 4.2–4.35 V – 100% charge. 3.7–3.8 V — ~50% charge. Below 3.0 V, deep discharge, requires special charger.

⚠️ Warning: If the battery is swelling, don't try to charge or use it! Lithium-ion batteries in this state can ignite. Contact the service center to replace it.

💡

A bloated battery is not only a loss of capacity, but also a real fire hazard. Even if the phone is working, replace the battery immediately!

What to do if the battery is worn out: 3 solutions

If your diagnosis shows wear and tear of more than 40%, consider the following options:

1. Software optimization: 📵 Turn off auto-run of unnecessary apps in Settings → Permits → Auto-start. ⚡ Enable the "Energy Saving" or "Ultra Mode" mode (limits background activity). 🔄 Reset the settings to factory (helps if the problem is in the software).
2. Battery replacement: 🛠️ Original battery for Redmi 4X worth ~1500–2000 ₽ (articular: MBJ416630). 🔧 Self-replacement is possible, but requires care (risk of damaging plumes). 🏠 The service center will cost 500-1000 ₽ additionally.

Interim measures:

• 🔋 Use Power Bank or Quick Charge 2.0 (18W) charging for quick charge recovery.
• ☀️ Avoid overheating (do not leave your phone in the sun or near heat sources).

💡 Battery advice: Buy batteries only from trusted sellers (for example, on AliExpress from official Xiaomi stores). Cheap counterparts often have real capacity 20-30% below the declared.

FAQ: Frequent questions about Xiaomi Redmi battery 4X