Xiaomi Redmi Note 8T, released 2019 It is still a popular budget smartphone, but its battery capacity 4000 mach 3-4 Owners face rapid discharge, sudden shutdowns when they are in use. 20-30% These are all signs that it is time to think about replacing. In this article, we will discuss the current prices for replacing the battery in the future. 2026 In the year, compare the cost in service centers and in case of self-repair, and also tell how to choose a high-quality battery and not overpay.
The cost of replacing varies from 800 to 3500 rubles depending on the region, type of battery and place of repair. But it is important to understand that cheap replacement does not always mean benefits. Counterfeiting the original batteries can last only a few months, and poor installation can lead to damage to plumes or boards. We analyzed the offers of service centers, online stores and user feedback to help you make an informed decision.
How much does it cost to replace a battery in official and unofficial services?
Xiaomi’s official service centers (such as Mi Service or authorized partners) guarantee quality work and original parts, but their services are more expensive. In informal workshops, prices are lower, but the risks are higher – from fake batteries to damage to a smartphone. Below is a comparative price table for Moscow, St. Petersburg and the regions (data for June 2026).
| Type of service | Cost (rupe) | Guarantee | Advantages | Risks. |
|---|---|---|---|---|
| Official Xiaomi service | 2500–3500 | 6–12 months | Original battery, proven masters, retaining warranty (if it is valid) | Expensive, long-term repairs (3-7 days) |
| Authorized partner | 2000–2800 | 3–6 months | Quality analogues, quick repair (1-2 days) | Possible non-original batteries |
| Informal workshop | 1200–2000 | 1–3 months (or not) | Low price, efficiency (1-3 hours) | Counterfeiting, lack of warranty, risk of phone damage |
| Self-sustaining replacement | 800-1500 (battery cost) | No. | Maximum savings, quality control | Difficult for beginners, risk of damaging plumes or displays |
In the regions, prices can vary by 15-25% in the direction of reduction, for example, in Yekaterinburg or Novosibirsk, a replacement in the informal service will cost 1000-1600 rubles, and in the official one - up to 3000 rubles. It is important to clarify whether the cost of diagnosis is included in the cost (sometimes it is allocated separately for 300-500 rubles).
⚠️ Warning: If the workshop offers a replacement battery on the Redmi Note 8T For example, a battery that is cheaper than 800 rubles, you will probably be installed a fake with a capacity lower than the declared one (for example, 3000 mAh instead of 4000 mAh), such batteries quickly lose capacity and can swell.
The cost of original and non-original battery
The price of the battery depends on the type of battery: original from Xiaomi or analogue from third-party manufacturers. Original batteries cost more, but last longer and are safer. Analogues are cheaper, but among them there are many fakes.
- 🔋 Original Xiaomi battery (article) MB-BL4000MA) — 4000 mAh capacity, 6-12 months warranty: 1800-2500 rubles (in official stores or from trusted suppliers).
- 🔋 Quality analogues (for example, from Baseus, Remax, Patona) - capacity of 4000-4200 mAh, warranty 3-6 months. Cost: 1000-1500 rubles.
When buying a battery, pay attention to:
- 📦 Packaging – the original Xiaomi batteries come in branded boxes with a hologram and QR-code.
- 🔍 Marking – the original must be the inscription Made in China, article MB-BL4000MA production date.
- ⚖️ Weight – counterfeits are often lighter than the original (the original weighs) ~80 grams).
💡
Before buying a battery, check it for authenticity with the Xiaomi Authenticity Check app (available on Google Play). QR-code on the package or enter the serial number.
Self-replacement: step-by-step instructions and risks
If you are going to replace the battery yourself, you will need:
- 🔧 New battery (original or qualitative analogue).
- 🔧 Plastic blades or mediators for disassembly of the body.
- 🔧 Cross screwdriver (usually) PH00).
- 🔧 Hair dryer or thermo-air station for softening glue.
- 🔧 Suction (to remove the display).
- 🔧 Double-sided tape or glue to fix the new battery.
The replacement process takes 30-60 minutes and includes the following steps:
Turn off the phone and remove it. SIM-memory-card|Heat the back cover with a hair dryer (temperature) ~60°C) for softening the glue|Carefully tuck the lid with a plastic spatula, starting at the bottom edge|Unscrew 10 screws that fix the metal plate|Disconnect the battery plume from the motherboard|Remove the old battery by putting it on the shoulder blade (do not use metal tools!)|Install a new battery, plug in the plume and assemble the phone in reverse order.-->
The hardest moments:
- 🔥 Warming up glue - if you overheat the case, you can damage the display or board.
- ⚡ Disconnection of the battery plume - it is fragile, easily breaks with careless handling.
- 🛠️ Fixing the new battery – if the glue is applied incorrectly, the battery will hang inside the case.
⚠️ Warning: If you replace yourself, you lose your warranty (if it's still valid) and you risk damaging your smartphone. If you're not sure about your abilities, you should contact the service. It's especially dangerous to change a ballooned battery, which can ignite if it punctures!
What to do if the battery is swelling?
Where to buy a battery for Redmi Note 8T: checked stores
When buying a battery, it is important to choose a reliable seller so as not to run into a fake.
- 🛒 Xiaomi official store (mi.com) – original parts, but high price and not always available.
- 🛒 AliExpress is cheap, but it's a high risk of counterfeiting, and we recommend stores with a rating above 98% and reviews in Russian, and examples of proven sellers are: Xiaomi Original Store, Baseus Official Store.
Average prices for batteries in online stores (June 2026):
| Shop | Type of battery | Price (rupe) | Time of delivery |
|---|---|---|---|
| Official Mi Store | Original | 2400 | 3-7 days |
| AliExpress | Original (Verified Seller) | 1800–2200 | 15-30 days |
| AliExpress | Analogue (Baseus) | 900–1200 | 10-20 days |
| Ozon | Analogue (no brand) | 600–900 | 2-5 days |
| Local store | Original/analogue | 1500–2000 | 1 day |
Important: AliExpress is a common fake for Xiaomi’s original battery packs that say “100% Original.” Check out reviews from photos and videos of customers comparing the new battery to the old one.
How to prolong the life of a new battery: tips for operation
Even after the replacement, the battery will last longer if you follow the following simple rules:
- 🔌 Avoid full discharge - optimally keep the charge in the range of 20-80%. Full discharge (0%) and overcharging (100%) reduce the life of the battery.
- 🔌 Use original or certified RAM – cheap charging with AliExpress can damage the battery.
- 🔌 Do not charge your phone in the heat or cold – the optimal temperature for charging: 10–30°C. In the cold (-10°C and below) the battery quickly goes down and +40°C is degraded.
- 🔌 Turn off background processes – apps like Facebook, Instagram or games drain the battery even when you’re on standby.
- 🔌 Calibrate the battery – once every 2-3 months completely discharge the phone before turning off, then charge to 100% without interruptions.
In the settings of the Redmi Note 8T there are functions to save charge:
- Go to Settings → Battery and Performance → Energy Saving Mode and turn it on.
- Turn off Auto Brightness and set the screen brightness to 50-60%.
- In the Features → Additional → Battery Optimization section, select applications that do not need to work in the background.
1. Installation quality (possibly the battery plume is poorly connected).
2. Power consumption settings (background processes, screen brightness).
3. Condition of the new battery (possible defect or forgery).-->
User reviews: real-world experience of replacement
We analyzed the reviews of Redmi Note 8T owners on forums (4PDA, Mi Community) and social networks.
- ⭐ "Changed in the official service for 2800 rubles" - the battery keeps as new, warranty 1 year. Minus: waited 5 days. (Source: Mi Community)
- ⭐ "I bought an analogue on AliExpress for 800 rubles, I changed it myself - it took 3 months, the capacity fell by 15: 4PDA)
- ⭐ "The local service replaced for 1500 rubles" — six months later the battery swelled again)
- ⭐ "I took the original from Mi Store, changed it myself, it worked perfectly, but I had to tinker with the lid. (Source: Reddit)
The feedback shows that:
- 🔹 The official service is reliable, but expensive and long.
- 🔹 Self-replacement is beneficial if you have experience.
- 🔹 Cheap analogues are often disappointing.