Xiaomi Redmi Note 5 is fast discharge: the reasons and 10 working solutions

Xiaomi Redmi Note 5

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If your Redmi Note 5 runs out too quickly, don’t be quick to blame the battery. 70% of the time, the problem is software settings, application background activity, or misuse. Even after 3-4 years of use, the original battery can last another year or two if you eliminate the “eaters” of the charge.

In this article, 10 proven ways to get back to battery, from basic to advanced, we'll figure out how to diagnose a problem, what settings to optimize, and when it's really time to change batteries. MIUI 10–14 (including global and Chinese firmware).

1.Diagnosis: Why does the battery run down quickly?

Before you fix anything, you need to understand what exactly discharges your Redmi Note 5. MIUI There are built-in monitoring tools.

Open the Settings. → Battery and productivity → Battery usage. Here you'll see a discharge graph and a list of the applications that consume the most power:

• 📱 The screen - if it takes up >40%, which means the brightness is too high or the display time is too high.
• 📶 Mobile network/Wi-Fi — high-end (>20%) It indicates a bad signal or background synchronization.
• 🤖 Android System or com.android.systemui – a sign of system lags or viruses.
• 🔄 Google Play Services – often to blame for background activity, especially if you have multiple Google accounts.

If there is an unknown application with a suspicious name (e.g. com.system.update), it may be a virus or adware, then immediately go to the section about cleaning the system.

Additional test: put your smartphone on a charger and see how fast it gains interest. 0 before 100% charge longer 3.5 (in the case of the original CC) 5V/2A), This is a sign of battery wear -- the capacity has dropped below. 60% starting-point.

2. Optimize MIUI settings to save charge

MIUI It's known for its functionality, but many of the "chips" are running in the background and eating the battery:

🔋 Battery mode

• 🛠 Go to Settings. → Battery and productivity → Battery mode.
• 🔄 Select “charge savings” (if you want to extend autonomy) or “balanced” (optimum option).
• ❌ Turn off the Adaptive Battery – this feature often doesn’t work properly on older devices.

📶 Network and connectivity

• 📡 Turn off auto-search Wi-Fi networks in Settings → Wi-Fi → Additionally.
• 📴 To the Mobile Network → Only select the network mode 4G (LTE), if 5G Not used (Not available on Redmi Note 5, but check your roaming settings).
• 🔄 Enable “Traffic Savings” in the settings SIM-Cards – This will reduce background activity.

🔍 Background activity

• 🚫 Stop Auto-Run Unnecessary Applications: Settings → Annexes → Application management → Auto-start.
• 🔄 Limit background work for social networks and instant messengers: Settings → Battery → Choice of applications → Set a limit for Facebook, Instagram, Telegram, etc.

⚠️ Note: Do not disable background activity for Google Play Services and MIUI System – this can lead to malfunctions in the smartphone.

3. Battery calibration: myth or reality?

Many people advise to “calibrate” the battery by resetting statistics in the file. batterystats.bin. It doesn't really help if the problem is the physical wear of the battery. 5 firmware MIUI 10–12 Sometimes it helps to reset the battery cache through the engineering menu.

How to do this:

1. Dial the dialer code: ##4636##.
2. Select "Battery Information".
3. Click on the three dots in the top right corner and select "Clear Statistics".
4. Completely discharge the phone before turning off, then charge to 100% without interruptions.

This method only works if:

• 🔋 The percentage of charge "jumps" (for example, from 30% immediately to 10%).
• 📉 The phone turns off at 15-20% charge, although previously worked up to 1-2%.

If nothing has changed after calibration, the problem is not in the software, but in the hardware.

4.Apps that kill the battery

Some programs consume charge even in the background. TOP-5 The culprits on the Redmi Note 5:

How to find and remove “gluttonous” applications:

1. Go to Settings → Applications → Application Management.
2. Sort by "Battery Use."
3. Remove or limit background activity for consumption apps >5%.

💡

If you can’t remove a pre-installed app (such as Mi Video or Mi Music), disable it in the app settings – this will stop background processes.

5 Hardware reasons: when it's time to change the battery

If all the software methods are tried and the battery still runs out in 4-5 hours, the problem is physical wear. The battery on the Redmi Note 5 is designed for 500-800 full charge cycles, and then its capacity drops by 30-50%.

Signs of a worn-out battery:

• 🔥 The phone gets hot when charging or using.
• ⚡ The charge is jerky (fast, then slow).
• 📉 The percentage of charge "sinks" (for example, from 40% immediately to 15%).
• 🔌 The phone does not turn on without charging, even if it shows 10-20%.

How to check the status of the battery:

1. Install the AccuBattery app (available on Google Play).
2. Charge your phone to 100% and use it normally.
3. After 2-3 cycles, the application will show the real capacity of your battery.

If the capacity fell below 2000 mAh (from the initial 4000 mAh), the battery needs to be replaced. The cost of the original battery for the Redmi Note 5 is about 1000-1500 rubles, replacing in the service center will cost 500-800 rubles.

⚠️ Warning: Don’t buy cheap AliExpress battery analogues! They often have understated capacity (2,500–3,000 mAh instead of the stated 4,000) and can swell in 3–6 months.

Advanced methods: firmware and reset

If the battery starts to go down quickly after the update MIUI, The problem might be the firmware. Here's what we can do:

🔄 Reverse to the old version MIUI

• Download stable firmware (for example, MIUI 11) from the official Xiaomi website.
• Go to Settings → About Phone → System Update → Click on three dots → “Select a firmware file”.
• Install the downloaded file (weight) ~1.5–2 GB).

⚙ Reset to factory settings

• Make a backup of the data through Settings → Additional → Backup.
• Go to Settings → About the phone → Reset settings.
• Select "Erase all data."

🛠 Rooting and Optimization (for experienced users)

• Get root rights through Magisk.
• Install Greenify for forced hibernation of applications.
• Disable unnecessary system services through Titanium Backup.

⚠️ Warning: Rooting voids warranty and can lead to bootloader lock. On Redmi Note 5, unlocking the bootloader takes 72 hours to wait after a request to the Mi Unlock Tool.

7. Alternative ways to extend autonomy

If you can’t replace the battery, try these methods:

🔋 External batteries (power banks)

• For Redmi Note 5, a power bank of 10,000–20,000 mAh with Quick Charge 3.0 support is suitable (for example, Xiaomi Mi Power Bank 3 Pro).
• Use a short cable (up to 50 cm) to reduce energy loss.

⚡ Wireless charging

• Redmi Note 5 does not support Qi-charging "out of the box", but you can buy a receiving module (about 500 rubles) and paste it under the back cover.
• The charging speed will be lower (~5W), But it's convenient for charging on the table.

🔄 Ultra-low consumption regimes

• Enable "Ultra Battery Mode" in Settings → Battery → Modes (available on MIUI 12+).
• Turn off all background data for non-system applications.
• Use black and white mode (in special features settings) — AMOLED-The screen (if installed) will use less energy.

💡

If the battery is discharged in 2-3 hours, even in standby mode, the problem is most likely hardware wear or virus. Software methods will not help here - you need a diagnosis in the service center.

8. Frequent user errors

Many people speed up battery wear without knowing it. Here's what you can't do with the Redmi Note 5:

❌ Myths and harmful advice

• 🔌 "You need to discharge your phone to 0% once a month, which is only true for nickel batteries. Lithium polymers (like the Redmi Note 5) don't require that.
• ⚡ "Charge only the original memory – you can use any high-quality charger with Quick Charge support 3.0 (5V/2A, 9V/1.8A).
• 🌡 "Keep your phone cold – low temperatures (<0°C) reduce battery capacity.

✅ What's Really Working?

• 🔋 Keep the charge in the range of 20-80% for maximum service life.
• 🔥 Do not use your phone while charging for games or videos – it overheats the battery.
• 📴 Turn off mobile data and Wi-Fi at night (or turn on the plane mode).

If you follow these rules, but the battery still goes down quickly, the problem is not in operation, but in hardware or software malfunction.

FAQ: Answers to Frequent Questions