Why Xiaomi’s battery is failing and when it’s time to change it
Battery is one of the most vulnerable parts of Xiaomi, Redmi and POCO smartphones. Even when used carefully in 2-3 years, the capacity drops by 30-50%, and the device begins to run out in a few hours. What is the reason? The chemical processes inside lithium-ion batteries: each charging-discharge cycle reduces their life, if you notice that the phone turns off at 20-30% charge, long charging or overheating, these are clear signs of wear and tear.
The manufacturer claims that the battery is designed for 500-800 full cycles, but in practice this figure depends on many factors: from the frequency of use of fast charging to temperature conditions. For example, constant charging by 100% or operating at sub-zero temperatures accelerate degradation. In modern models (for example, Xiaomi 13 Pro or Redmi Note 12), the system optimizes charging, but this only delays the inevitable.
How do you know if the battery is going to change?
- 🔋 The phone discharges in 3-4 hours with moderate use (social networks, instant messengers).
- ⚡ Charging jumps: for example, from 50% immediately falls to 15% or “stuck” at one value.
- 🔥 The body heats up even with simple tasks (calls, watching videos).
- 🛑 The device turns off at 20-40% charge, although the indicator shows the remainder.
If you know two of the items on the list, it's time to think about replacing them, but before you run to the service, check the battery status through an engineering menu or an application like AccuBattery. Sometimes the problem lies in software failures, not in hardware.
How much does it cost to replace Xiaomi battery in 2026: a comparison of prices
The cost of replacing a battery depends on three key factors: smartphone model, service type (official or unofficial) and battery quality (original, OEM or analogue). In the table below, the current prices for popular models for June 2026.
| Smartphone model | Official Service (original) | Informal service (OEM) | Self-replacement (analogue) |
|---|---|---|---|
| Xiaomi 13/13 Pro | 5 500–7 000 ₽ | 3 500–4 500 ₽ | 2 000–2 800 ₽ |
| Redmi Note 12 Pro+ | 4 800–6 000 ₽ | 3 000–4 000 ₽ | 1 500–2 200 ₽ |
| POCO X5 Pro | 4 200–5 500 ₽ | 2 800–3 500 ₽ | 1 300–1 900 ₽ |
| Redmi 10C | 3 500–4 500 ₽ | 2 200–3 000 ₽ | 1 000–1 500 ₽ |
| Xiaomi Mi 11 | 5 000–6 500 ₽ | 3 200–4 200 ₽ | 1 800–2 500 ₽ |
Important: official Xiaomi services only install original batteries with a 6-month warranty, but the price can be overstated by 30-50% compared to proven workshops. OEM-Batteries (made in the same factory as the originals but without the brand logo) are cheaper, but quality depends on the supplier. The cheapest ones (such as Baseus or Remax) risk lasting only 6-12 months.
Prices also depend on the complexity of disassembly, such as the Xiaomi 13 Ultra battery glued to the body, and its replacement requires special equipment, which increases the cost of work by 1,000-1 500 ₽. While at Redmi 9A The battery is mounted on the latches, and it can be changed in 20 minutes.
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Before replacing the battery, check whether your smartphone is not guaranteed. In official services Xiaomi sometimes agree to change the battery under warranty if its capacity has fallen below 80% of the nominal (this will require diagnosis).
Where to change the battery: official service vs private workshops
Choosing between a formal service center and a private workshop is always a tradeoff between price, quality and warranty, so let's look at the pros and cons of each option.
Official Xiaomi service
- ✅ 6-12 months warranty for battery and operation.
- ✅ Use only original parts with factory calibration.
- ✅ Diagnosis before replacement (check whether the power controller is to blame).
- ❌ Prices are 30-50% higher than in private workshops.
- ❌ queues for repairs (on average 3-7 days).
Private service centres
- ✅ Prices are lower by 20-40% (especially if used) OEM-battery).
- ✅ Fast repair (often "here and now" in 1-2 hours).
- ✅ You can also arrange a replacement on your battery (if you bought it yourself).
- ❌ The risk of running into a poor quality spare part or unqualified master.
- ❌ The warranty is usually 1-3 months (or not at all).
How do you choose a reliable workshop?
- 📌 Reviews on Yandex.Maps or Google Maps (especially with a before/after photo").
- 🔧 Certificates or partnership agreements with Xiaomi.
- 💬 Preliminary diagnosis (free or for a nominal fee).
⚠️ Some workshops offer ultra-cheap battery replacement for 800-1,200 ₽. Most often, this means you'll be given a used battery or a fake AliExpress battery, which can swell or fail in a few weeks.
Replacing your battery: Is it worth the risk?
If you have experience in electronics repair, you can replace the battery in Xiaomi yourself.
- 🔧 Set of screwdrivers (cross, flat, torks) T3–T5).
- 🔥 Hair dryer or thermoplatform for softening glue.
- 📱 Plastic mediators (to avoid damaging plumes).
- 🔋 New battery (recommended) OEM from Huaqin or Sunwoda).
Average cost of a self-replacement kit (battery) + tools - 1,500-3,000 ₽. But there are nuances:
- 🛠️ In Xiaomi models 12/13 series and Redmi Note 11/12 The battery is glued to the body, and without experience, it's easy to damage.
- ⚡ Risk of short circuit when incorrect connection.
- 📉 After replacement, the calibration of the charge controller may be lost (the phone will show the wrong percentage).
Check the battery model (must match the original)
Turn off the phone and take it out. SIM-map
Prepare the workplace (clean surface, good lighting)
Videotape the process (if something goes wrong)
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If you still decide, here is a step-by-step instruction for the Redmi Note 10 Pro (the algorithm is similar for other models, but the mounts may differ):
- Turn off the phone and remove the back cover (gently tucking in the mediator).
- Unscrew the screws that fix the metal plate over the battery.
- Disconnect the battery plume from the motherboard.
- Heat the body with a hairdryer (60-70 ° C) and gently tuck the battery with a plastic spatula.
- Install a new battery, plug in the plume and assemble the phone in reverse order.
⚠️ Warning: If the phone doesn’t turn on or the battery doesn’t charge after you’ve replaced, check if you’ve damaged the power controller (chip). BQ25890 It's going to cost 2,000 to 4,000 to 4,000 to repair. ₽.
What to do if the new battery is quickly discharged?
How to Save Money on Battery Replacement: 5 Ways to Work
Replacing a battery isn't the cheapest thing to do, but there are ways to reduce costs without risking the phone.
- Buy the battery yourself, and the official services charge 100-200% of the parts markup, like the original Xiaomi battery. 11T Pro can be purchased on AliExpress for 1,800 ₽, And in the service it will cost 3,500. ₽.
- Locate for stock. Many workshops offer discounts on battery replacement in low season (January-February) or for complex repairs.
- Change services at electronics stores. For example, in "Svyaznoy" or "M. Video" is often cheaper than in Xiaomi's branded centers.
- Team up with friends. Some workshops offer discounts for group repairs (e.g. if you rent 2-3 phones at a time).
- Try software optimization. Calibrate the battery before you change it, drain the phone completely, then charge it to 100% without interruption, sometimes up to 10 to 15 percent of capacity.
Another way to save money is to replace it yourself with a warranty, and some online stores, like Beru.ru or Ozon, sell batteries with an "extended warranty" option, and if something goes wrong, you'll get your money back or your parts replaced.
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Don't skimp on battery quality! Cheap analogues (priced up to 1,000) ₽) Often have a real capacity 20-30% below the declared and can swell in a few months.
Frequent Battery Replacement Mistakes and How to Avoid Them
Even in service centers, sometimes mistakes are made that lead to new problems, and here are the most common mistakes and how to prevent them:
- 🔧 Trail damage when the battery is disconnected. Always use plastic pickups, not metal screwdrivers.
- 🔥 Overheating of the body when removing the adhesive with a hairdryer. Keep the temperature at 70.°C, otherwise plastic parts will melt.
- 📉 Incorrect calibration after installation. After replacing the battery, you need to completely discharge and charge the phone 2-3 times.
- 🛑 Use of incompatible battery. For example, in the Redmi Note 9 Pro you can not install batteries from Note 9S — charge controllers.
One of the most dangerous mistakes is ignoring the bloating of the battery, and if the battery is swelling (even a little), it can't be used, and the risk of fire or damage to the screen is very high.
- Turn off your phone immediately.
- Don't try to charge it.
- Contact the service within 1-2 days (a bloated battery can damage the motherboard).
⚠️ Warning: If the phone starts to overheat or discharge quickly after the battery is replaced, check if the microcontroller settings are not corrected. In some cases, it requires flashing (cost: 1,500-2,500). ₽).