Why Change the Battery to Xiaomi Redmi and When to Change it
The battery in a smartphone is like a heart in the body: over time, it “wears out” even if you take care of the device. Owners of Xiaomi Redmi (especially Note 8/9/10/11 and Redmi Pro models) often face the fact that after 2-3 years the battery begins to “take over”: the phone discharges in a few hours, turns off at 20-30% charge or refuses to turn on without recharging.
The first sign that the battery needs to be replaced is sudden shutdowns when the charge index is above 15%.This suggests that the power controller is blocking work due to a critical drop in voltage on worn cells. The second alarm is bloating (especially noticeable if you put the phone down on a flat surface and sway: it will “play”). The third point is a quick discharge (for example, the Redmi Note 10 Pro with a new battery holds a charge of 1.5-2 days, and with a worn one barely lasts until the evening).
Sometimes the problem lies in the firmware (for example, after the MIUI update, power-consuming bugs appeared) or in the background software (apps like Facebook or TikTok can eat charge even in standby mode).
- 📱 Battery status in Settings → Battery → Battery status (if there is one), a figure below 80% is a reason to think.
- 🔋 Battery life in real-world conditions (run the test with a full charge to 0% discharge in typical use).
- 🔍 Heating the case – if the phone is warming even without a load, it can be a sign not only of battery wear, but also of motherboard issues.
If all the signs point to a battery, it's time to estimate the cost of replacement, but there's a nuance: the price depends on the model, the type of battery, the repair site, and even the region, and then we'll go through all the options from official service to self-replacement.
How much does it cost to replace a battery in Xiaomi service centers (official prices 2026)
Xiaomi’s official service centers (a list of which can be found on mi.com) are the most reliable, but also the most expensive option, where you are guaranteed to get an original battery with a guarantee (if it is still valid) and diagnose for other malfunctions. However, the prices bite: for example, replacing the battery with a Redmi Note 10 Pro will cost 4,500-5,500 rubles, and on the Redmi Note 12 – already 5,000-6000 rubles.
Here are the current prices for popular models (as of June 2026, Moscow and the regions):
| Xiaomi Redmi Model | Cost of replacement (₽) | Repair time | Guarantee |
|---|---|---|---|
| Redmi Note 8/8T/8 Pro | 3 500–4 200 | 1-2 hours | 6 months |
| Redmi Note 9/9T/9 Pro | 4 000–4 800 | 1-2 hours | 6 months |
| Redmi Note 10/10 Pro/10S | 4 500–5 500 | 1-3 hours | 6 months |
| Redmi Note 11/11 Pro/11S | 5 000–6 000 | 1-3 hours | 6 months |
| Redmi Note 12/12 Pro | 5 500–6 500 | 1-3 hours | 6 months |
Important: official Xiaomi services often practice comprehensive diagnostics before repair (cost about 500 rubles). If you refuse to repair after diagnosis, this money will not be returned. Also note that some centers may impose additional services, such as cleaning connectors or checking moisture protection (another + 1000-1 500 rubles).
⚠️ Warning: If your Redmi is still warranty-worthy, but the battery is out of order due to the manufacturer (e.g., swelling in the first 6 months), the replacement should be done free of charge.
Pros of official service:
- ✅ Original parts with guarantee.
- ✅ Professional equipment (e.g., an ultrasonic bath for cleaning contacts).
- ✅ Keeping a phone guarantee (if it is valid).
Cons:
- ❌ High price (20-30% more expensive than in unofficial services).
- ❌ Long wait (up to a week during peak periods).
- ❌ Not always flexible conditions (e.g., may refuse repairs if the phone has been opened before).
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Xiaomi's official service is reliable, but expensive, optimal if the phone is warranty or you are critically interested in the original battery.
The cost of replacement in informal services: how to save and not run into a fake
Informal service centers and private workshops offer a replacement battery Xiaomi Redmi cheaper — by 30-50%. For example, replacing the battery on the Redmi Note 10 Pro will cost 2,500-3500 rubles, and on the Redmi Note 9 — 2000-2800 rubles. However, there are risks: from poor-quality batteries to damage to the phone during repairs.
How to choose a reliable service:
- 🔍 Read reviews on Yandex.Maps, Google Maps or 2GIS. Pay attention to the photos of the repair and the answers of the wizard to the questions.
- 📋 Ask for a warranty of at least 3 months for battery and 1 month for work.
- 🔋 Specify the battery type: original (with the Xiaomi logo), analog (ATL, Sunwoda) or "nouneim" (risky).
- 💰 Compare prices — if someone offers a replacement for 1,000 rubles, it’s almost certainly a fake.
Average prices in unofficial services (Moscow and regions, 2026):
| Model | Price (₽) with original battery | Price (₽) with analogue (ATL/Sunwoda) | Price (₽) with "nonaim" |
|---|---|---|---|
| Redmi Note 8/8T | 2 500–3 000 | 1 800–2 200 | 1 200–1 500 |
| Redmi Note 9/9T | 3 000–3 500 | 2 000–2 500 | 1 300–1 700 |
| Redmi Note 10 Pro | 3 500–4 000 | 2 500–3 000 | 1 500–2 000 |
| Redmi Note 11 | 4 000–4 500 | 2 800–3 300 | 1 800–2 200 |
Critical: Non-brand batteries often have 20 to 30 percent lower capacity than the declared one and can swell in 3 to 6 months, for example, instead of 5,000 mAh, you get 3,500 to 4,000 mAh, and the phone will run out as quickly as the old battery, and if the master refuses to show the battery before installation, this is a reason to be wary.
⚠️ Warning: Some services may offer a "original" battery at the price of an analogue. You can check authenticity by: 🏷️ Barcode (originally scanned and led to the Xiaomi website). 🔍 Appearance: the original has clear labeling, smooth seams and protective film. 📦 Packaging: the box must be with a hologram and serial number.
Where to look for proven workshops:
- 🛠️ Services with a rating of 4.8+ on Yandex.Maps (for example, "FixPrice", "TechnoDoctor").
- 📱 Xiaomi repair centers (often give warranty up to 1 year).
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Before replacing, ask the wizard to check the charge controller (diagnosis costs 300-500 ₽). Sometimes the problem is not the battery, but the chip, and replacing the battery will not help.
Self-replacement of the battery: step-by-step instructions and risks
If you are confident in your abilities and are ready to save money, you can change the battery to Xiaomi Redmi yourself. The cost of the original battery on AliExpress or in Russian stores (for example, "Svyaznoy", "M. Video") - from 1,500 to 3,000 rubles depending on the model. However, remember: this is a risky option, especially for beginners.
What you'll need:
- 🔧 A set of screwdrivers (cross, flat, five-pointed for Xiaomi).
The following is the example of Redmi Note 10 Pro:
- Turn off the phone and remove it. SIM-map.
- Heat the hair dryer around the perimeter (temperature ~60 ° C) for 2-3 minutes.
- Tap the lid with a plastic spatula or mediator, starting at the bottom edge.
- Unscrew the screws that fix the metal plate over the battery.
- Disconnect the battery plume (it is usually glued, be careful!).
- Put a plastic blade on the old battery (don't use metal!) and there may be glue underneath - remove it gently with alcohol.
- Install a new battery, plug in the plume and assemble the phone in reverse order.
I turned off my phone and pulled it out. SIM-map|Prepared the workplace (clean surface, good lighting)|Checking the new battery for authenticity|I have a spare phone in case of failure.|I know how to roll back changes if something goes wrong.-->
Risks of self-replacement:
- ⚡ Damage to plumes (especially flexible screen cable).
- 🔥 Fire when the battery is not connected correctly.
- 📵 Loss of watertightness (if leakproofness is broken).
- 🚫 Warranty waiver (if the phone is still warranty).
⚠️ Warning: On the Redmi Note 11/12 models, the battery is particularly glued to the core, so if you don't remove it carefully, you can tear the shell, and if you do, don't turn on the phone -- you're at risk of short circuit!
Where to buy a high-quality battery:
- 🌍 AliExpress (shops rated 98%+, such as Xiaomi Mall Store or Mi Global Store).
- 🛒 "Svyaznoy" or "M. Video" (there are original parts, but the price is higher).
- 📦 Specialized sites (e.g., 4PDA Market, Beru).
What if the phone doesn’t turn on after the replacement?
How much does it cost to replace a battery in different cities of Russia (comparison of prices)
The cost of replacing a battery with a Xiaomi Redmi depends on the region, with prices in Moscow and St. Petersburg being 20 to 30 percent higher than in smaller cities, but the range of services is wider, and the table below shows the average prices for Russia for 2026 (per work + original battery):
| Town | Redmi Note 9 (₽) | Redmi Note 10 Pro (₽) | Redmi Note 12 (₽) |
|---|---|---|---|
| Moscow | 4 000–4 800 | 5 000–6 000 | 6 000–7 000 |
| St. Petersburg | 3 800–4 500 | 4 800–5 500 | 5 500–6 500 |
| ekaterinburg | 3 500–4 000 | 4 500–5 000 | 5 000–6 000 |
| Novosibirsk | 3 200–3 800 | 4 200–4 800 | 4 800–5 500 |
| Kazan/Nizhny Novgorod | 3 000–3 600 | 4 000–4 500 | 4 500–5 200 |
In small cities (population up to 200 thousand) prices may be lower by 10-20%, but there is a higher risk of running into poor-quality service. If your city does not have proven workshops, consider sending a phone to a large service (for example, to Moscow). Many centers offer a service "repair on the road" with delivery by Russian Post or SDEC (cost is about 500-800 rubles one way).
Example of calculation for Redmi Note 10 Pro from Samara:
- 📦 Delivery to Moscow (round-trip) – 1,200 ₽.
- 🔧 Battery replacement in Moscow service - 4,500 ₽.
- 📲 Total: 5,700 ₽ (vs. 5,000–5,500 ₽ in local service, but with quality assurance).
If you decide to send your phone by mail, you must:
- 📦 Pack it in a bubble film and a box.
- 📝 Make an inventory of the attachment (specify model and malfunction).
- 💳 Pay for services only after the repair is confirmed (many services accept payment upon receipt).
How to prolong the life of a new battery: 7 rules for owners of Redmi
Even after you replace the battery with a Xiaomi Redmi, the battery life depends on how you use the phone, and with simple rules, you can extend the battery life by 1-2 years.
- Avoid full discharge. Lithium-ion batteries do not like deep discharge. It is optimal to keep the charge in the range of 20-80%. If the phone is dead, charge it as soon as possible - a long "simple" in a discharged state spoils the battery.
- Don’t use “cheap” charges. Uncertified chargers (especially those with AliExpress for 200 rubles) can deliver unstable voltages, which speeds up battery wear. Redmi is better off using original or certified charges (for example, Baseus, Anker).
- Don't overheat your phone. Temperatures above 40°C shorten battery life. Don't leave your phone in the sun, don't play heavy games while charging, don't use covers that block the heat sink.
- Turn off unnecessary functions. Constant GPS, NFC, Bluetooth and mobile Internet in the background drain the battery. Turn them on only when necessary.
- Update your firmware. Newer versions of MIUI often optimize your power consumption. Check for updates in Settings → About Phone → System Update.
- Calibrate the battery. Every 2-3 months, completely discharge the phone before turning off, then charge to 100% without interruption. This helps to reset the errors of the charge controller.
- On Redmi with AMOLED- screens (e.g. Note 10 Pro, Note 11 Pro+), the dark theme reduces power consumption by 10-15%.
Myths about Xiaomi batteries, which you should not believe:
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Compliance with these rules can extend the life of the battery by 30-50%, for example, when you use the battery on the Redmi Note 10 Pro will last 3-4 years instead of the standard 2-3.
Frequent battery replacement errors and how to avoid them
Even in service centers, sometimes mistakes are made that lead to a re-repair or failure of the phone, and here are the most common mistakes and how to prevent them:
- Use of poor-quality glue. Once the battery is replaced, it needs to be glued, otherwise it will walk inside the case, which can lead to a break in the plume. Cheap services often use regular tape or superglue, this is unacceptable. Use bilateral acrylic glue (for example, 3M VHB).
- Screen plume damage. On Redmi Note 11/12 models, the display plume runs next to the battery, and if you take off the old battery carelessly, it's easy to tear it, and if you replace it with artifacts or the touchscreen doesn't work, it's probably damaged.
- Battery misconnection. If you confuse polarity or if you don't lock the plume properly, the phone may not turn on or malfunction. Always make sure the connector is plugged in before you click.
- Ignoring bloating: If the old battery is swelling but it's still left on the phone (for example, to save money), it can damage the screen or short circuit. The bloated battery needs to be removed immediately!
- No test after replacement. After installing the new battery, the wizard must check: 🔋 Charging/discharge (the phone should charge normally and give off charge). 📱 All sensors (gyroscope, accelerometer - they can get lost when opened). 📶 Communication and Wi-Fi (sometimes during disassembly, antenna plumes are damaged).
If you notice any of this after the replacement:
- 🔥 The phone is warmer than usual.
- 📉 The battery is discharged as fast as the old one.
- 🔌 Charging is jerking or not going at all.
Get back to the service and demand a rework!
⚠️ Warning: On Redmi models with NFC (e.g. Note 10 Pro, Note 11) contactless payment may stop working after the battery is replaced. This is because the NFC antenna is often glued to the battery. Check with the wizard if it is saved when it is replaced!