Xiaomi Redmi Note 10 remains one of the most popular mid-range smartphones due to its balance of price and performance. However, over time, even reliable devices experience battery wear: the phone begins to discharge within a few hours, turns off at 20-30% charge, or requires constant recharging. If you notice these symptoms, it's time to consider replacing the battery.
In this article we will look at how replace the battery yourself Redmi Note 10 without contacting a service center, what tools are needed, where to buy a quality battery and how to avoid common mistakes. You will also find out how much a professional replacement costs and when it is better to trust the experts.
Signs of battery wear: when do you need replacement?
Lithium polymer batteries in smartphones degrade over time - this is a normal process. However, some signs indicate that the battery Redmi Note 10 requires urgent replacement:
- 🔋 The phone discharges in 3-4 hours with moderate use (social networks, instant messengers, calls).
- 📉 The charge percentage “jumps”: for example, from 40% it immediately drops to 15% after a reboot.
- ⚡ The device turns off at 20-30% charge, although the indicator shows the remaining energy.
- 🔥 The battery is swollen (visible by the raised back cover or the increased gap between the screen and the body).
- 🛑 The smartphone overheats while charging or running on battery power.
If you experience at least 2-3 of these symptoms, it's time to check the condition of your battery. For diagnostics you can use applications like AccuBattery (shows actual capacity) or built-in tools MIUI. For example, go to Settings → Battery → Battery status — the current capacity is displayed there as a percentage of the factory one (the norm is 80% and above).
⚠️ Attention: if the battery is swollen, turn off your phone immediately and don't try to charge it! The risk of fire or damage to internal components is extremely high. In this case, the replacement must be carried out by a specialist.
Average battery life Redmi Note 10 — 2-3 years with active use. If your smartphone is older, the probability of wear and tear is close to 100%. But even on a new device, the battery can fail due to overheating, the use of low-quality chargers, or deep discharges.
- Every 1-2 years
- Every 3-4 years
- Only when the phone stops working
- Never changed
Which battery to choose for Redmi Note 10?
Factory battery in Redmi Note 10 has a capacity 5000 mAh and labeling BM4X (or BM4W for some revisions). When replacing, it is important to choose a battery with similar parameters, otherwise there may be problems with charging, overheating or rapid wear.
Where to buy a quality battery:
- 🛒 Official Xiaomi service centers - guarantee of an original battery, but the price is higher (from 2500 to 3500 rubles).
- 🌍 AliExpress, Amazon, eBay - cheaper (1000–2000 rubles), but there is a high risk of running into a fake. Look for sellers with a 98%+ rating and reviews of compatibility with Redmi Note 10.
- 🏬 Local spare parts stores (for example, Svyaznoy, MVideo, specialized outlets) - price 1500–2500 rubles, but check the certificates.
What to look for when purchasing:
| Parameter | Requirements | What happens if you ignore it? |
|---|---|---|
| Capacity | 5000 mAh (±5%) | A battery with a smaller capacity will last less, a larger one may not fit into the case or may overheat. |
| Voltage | 3.8–4.4 V | Incompatible voltage will damage the power controller. |
| Marking | BM4X or BM4W |
Other models may not be suitable in terms of connector or size. |
| Manufacturer | ATL, Sunwoda, Desay (original) | No-name batteries often swell or lose capacity within 3-6 months. |
Critical! Do not buy batteries labeled “Ultra Capacity” or “6000 mAh” - these are fakes. Original battery Redmi Note 10 always has a capacity of exactly 5000 mAh. Also avoid sellers who do not provide photos of the actual product or certificates.
Before purchasing, ask the seller to send a photo of the battery from both sides. The original must have: Xiaomi hologram, production date (not older than 6 months), clear markings BM4X and QR code.
Preparing for replacement: tools and safety
Battery replacement Redmi Note 10 Requires precision and the right tools. Here's what you'll need:
- 🔧 Screwdriver set: cross (PH00), flat (1.5 mm), plastic pick or paddle.
- 🔥 Hair dryer or hot air station (to soften the glue).
- 🧲 Sucker (to remove the back cover).
- 🧴 Isopropyl alcohol (90%+) - for cleaning glue.
- 🛡️ Gloves and safety glasses (in case the battery is damaged).
- 📦 New battery with double-sided tape (usually included).
Important! Work on a clean, well-lit surface. Place all screws in separate containers (such as a magnetic screw tray) - in Redmi Note 10 There are more than 10 of them, and they are easily lost.
Turn off the phone and remove the SIM card|Make a backup copy of the data (in case of an error)|Charge the phone to 30-50% (do not charge a swollen battery!)|Prepare the workplace: no dust, moisture, metal objects|Check the new battery for integrity (no swelling, damage)-->
If you don't have experience disassembling smartphones, practice on an old device or watch video guides. For example, on YouTube there are detailed videos from channels JerryRigEverything or Repair Universe - they show the nuances of disassembly Redmi Note 10.
⚠️ Attention: if you doubt your skills, it is better to contact the service. Replacement errors (for example, damage to the screen cable or power controller) can cost more than the battery itself.
Step-by-step instructions: how to replace the battery
Now let's move on to the process itself. Follow the instructions carefully - every step is important!
Step 1: Removing the back cover
1. Turn off your phone and place it face down.
2. Heat the edges of the back cover with a hairdryer (temperature ~60°C) for 1-2 minutes - this will soften the glue.
3. Pry off the cover with a plastic spatula or pick, starting from the bottom edge (where the USB-C connector is).
4. Carefully walk around the perimeter, separating the cover. Do not force it - there may be latches inside!
Step 2: Disconnecting the Battery
1. Unscrew the 10 screws securing the metal plate (use a PH00 Phillips screwdriver).
2. Remove the plate and disconnect the battery cable using a plastic spudger. Do not use metal tools!
3. Check the battery voltage with a multimeter (should be 3.7–4.2 V). If it is below 3.5 V, do not touch it, it is dangerous.
Step 3: Removing the old battery
1. Use a plastic spatula to pry the battery off the side (where there are no components).
2. If the battery is glued, heat it with a hairdryer (no higher than 70°C!) and carefully pull the tab (if any).
3. Remove any remaining adhesive with isopropyl alcohol. Do not use acetone or solvents!
Step 4: Install a new battery
1. Remove the protective film from the new battery and attach double-sided tape (included in the kit).
2. Connect the battery cable to the motherboard. Make sure the pins match!
3. Carefully place the battery in place, pressing the edges to secure it.
Step 5. Assembling the phone
1. Reinstall the metal plate and tighten the screws (do not overtighten!).
2. Glue the back cover. For reliability, you can use glue B-7000 or double-sided tape.
3. Turn on the phone and check the charge. If the smartphone does not turn on, check the connection of the battery cable.
What to do if the phone does not turn on after replacement?
1. Check whether the battery cable is connected correctly (sometimes it comes off during assembly).
2. Connect your phone to charge for 10-15 minutes - the battery may be low.
3. If the screen does not respond, but the phone vibrates, the problem may be in the display cable.
4. As a last resort, reset the settings via Recovery Mode (press Power + Volume Up when the phone is turned off).
How much does it cost to replace a battery at a service center?
If you don't want to risk it and would rather have it professionally replaced, here are the estimated prices in 2026:
| Service type | Cost (RUB) | Pros | Cons |
|---|---|---|---|
| Xiaomi official service | 2500–3500 | 6-12 months warranty, original battery | Long (3–7 days), expensive |
| Unofficial services | 1200–2000 | Fast (1–2 hours), cheaper | Risk of non-original battery, no warranty |
| Self-replacement | 1000–1500 (battery cost) | Savings, quality control | Risk of damage to the phone, no warranty |
In official services Xiaomi They use original batteries with a guarantee, but the price is almost 2 times higher than in small workshops. If you choose an unofficial service, please check:
- 🔍 What kind of battery is installed (ask for a photo or certificate).
- ⏱️ How long will the replacement take (the norm is 1-2 hours).
- 📄 Do they provide a guarantee (at least 3 months).
Important! Some services may offer “improved” batteries with a capacity of 5500 or 6000 mAh. This is a deception - in Redmi Note 10 It is physically impossible to install a larger capacity battery without modifying the case.
Common mistakes and how to avoid them
Even with careful replacement, you can make mistakes that will lead to your phone breaking. Here are the most common:
- 🔌 Damage to the battery cable - if you pull it too hard, the contacts may come off. Solution: use a plastic spatula and pry gently.
- 🔥 Battery overheating with hair dryer - Temperatures above 70°C may cause fire. Solution: keep the hairdryer at a distance of 10 cm and heat for no longer than 2 minutes.
- 🛠️ Lost screws - in Redmi Note 10 screws of different lengths. Solution: stack them individually and photograph the arrangement.
- 📱 Screen damage - if you press too hard on the cover during assembly. Solution: press the lid evenly, without distortion.
- 🔋 Wrong polarity - if you confuse “+” and “–” when connecting the battery. Solution: There is a marking on the cable, check it.
Another common problem is that the phone does not turn on after replacement. The reasons may be different:
- The display cable or power button is disconnected.
- The power controller is damaged (if the battery was severely discharged).
- Poor quality battery (for example, with the wrong voltage).
⚠️ Attention: if after replacement the phone heats up, quickly discharges or turns off, turn it off immediately and check the battery connection. It may be faulty or incorrectly installed.
If you're not confident in your skills, it's better to overpay for a professional replacement than risk your phone. Damage to the motherboard or screen will cost 5-10 times more than saving on the battery.
How to extend the life of a new battery?
To help your new battery last longer, follow these guidelines:
- 🔌 Use original charger (or certified with support
Quick Charge 3.0). Cheap chargers ruin the battery. - 📉 Avoid deep discharges — charge the phone at 15–20% charge, without waiting for it to turn off.
- 🌡️ Don't overheat your phone - Do not leave it in the sun or near heat sources.
- 🔋 Calibrate your battery once every 3 months: completely discharge the phone, then charge it to 100% without interruption.
- ⚡ Disable fast charging, if you're not in a hurry. Slow charging (5W) wears out the battery less.
It is also useful to disable unnecessary background processes. For example, in MIUI go to Settings → Battery → Power saving mode and select "Balanced" or "Battery Saver". This will reduce the load on the battery.
Application AccuBattery will help monitor the battery status. It shows:
- Actual capacity (in mAh).
- Wear rate.
- Battery temperature.
- Charging statistics.
If you rarely use your phone, store it with a charge of 40-60%. Full charge or discharge during long-term storage accelerates battery degradation.
FAQ: Frequently asked questions about replacing the battery Redmi Note 10
❓ Is it possible to replace the battery with Redmi Note 10 no experience?
Theoretically yes, but the risk of damaging the phone is high. If you have never disassembled smartphones, it is better to practice on an unnecessary device or contact a service center. The main difficulties: peeling off the back cover (the latches can be broken) and working with small screws.
❓ How long will the new battery last?
With proper operation (without overheating and deep discharges) – 2–3 years. Original batteries last longer than no-name. If after 6 months the capacity has dropped by 20%+, the battery is defective.
❓ What to do if after replacing the phone does not see the SIM card?
Most likely, the SIM card tray moved during assembly or the antenna cable was damaged. Try removing and reinserting the SIM. If it doesn’t help, disassemble the phone and check the connections of the cables.
❓ Is it possible to use a battery from Redmi Note 10 Pro?
No! U Note 10 Pro another battery (BM4Z, 5020 mAh) with a different connector and dimensions. She won't physically approach Redmi Note 10.
❓ Why does a new battery discharge quickly?
Possible reasons:
- Defective battery (check with AccuBattery).
- Background processes (check in
Settings → Battery → Usage). - The power controller is damaged (needs diagnostics at a service center).