Xiaomi Mi 5s Plus is the flagship of 2016, which is still used by many users due to the powerful hardware and high-quality screen. However, over time, even the most reliable battery loses capacity: the phone starts to run out in a few hours, turns off at 20-30% charge or refuses to turn on. If your Mi 5s Plus has become “hold on” for less than a day, it’s time to think about replacing the battery.
In this article, you'll find step-by-step instructions for replacing a battery, taking into account all the nuances of the model, from choosing the original or analogue to correctly calibrating after installation, we'll discuss what tools you need, how to avoid damage to the plumes, and what to do if the phone does not turn on after replacing, and you'll also learn whether to contact the service or you can handle yourself - even without experience repairing.
Important: The Mi 5s Plus has a non-removable battery soldered to the motherboard through a connector, and the body is glued around the perimeter, which complicates the process, but does not make it impossible, the main thing is to follow the instructions and take your time.
1. Signs of battery wear: when is it time to change?
Average life of lithium polymer batteries — 2-3 And then the capacity drops to the next year of active use. 30-50%, And the controller starts to crash. Here are the key symptoms that the Xiaomi Mi battery is going to crash. 5s Plus requires replacement:
- 🔋 Phone's running out of power. 3-4 hours in normal use (social networks, messengers).
- 📉 The percentage of charge “jumps” (for example, from 40% at once to 15%) or hangs on one value.
- 🔌 The device is switched off when 20-30% charge and not activated without recharging.
- 🔥 The battery swelled (seen on a raised screen or body).
- ⚡ The phone warms up more than usual during charging or work.
If you see at least 2-3 signs from the list, battery replacement is inevitable. A bloated battery cannot be ignored: it can damage the screen or motherboard, and in rare cases, even ignite.
You can check the status of the battery through an engineering menu or applications like AccuBattery. If the actual capacity has fallen below 2000 mAh (at the initial 3800 mAh), it is time to act.
2. Battery selection: original vs analogues
For Xiaomi Mi 5s Plus suitable batteries with the following characteristics:
- 📏 Capacity: 3800 mAh (original) or 4000-4200 mAh (improved analogues).
- 🔌 Tension: 3.85V (standard for Xiaomi lithium polymer batteries).
- 🔧 The connector: must match the original (24-pin, pole-proof).
Where to buy it?
| Type of battery | Pluses | Cons | Price (2026) |
|---|---|---|---|
| Original (Xiaomi) | Compatibility guarantee, long service life, accurate capacity. | It is expensive and difficult to find (not officially sold). | 2500–3500 ₽ |
| Analogue (Green Cell, Baseus) | Cheaper, often with increased capacity, is easy to buy. | It may be less than the original, the risk of marriage. | 800–1500 ₽ |
| B/o original | Low price, original quality. | The risk of buying a worn-out battery, a small resource. | 500–1200 ₽ |
Selection recommendations:
- 🛡️ Buy only from trusted sellers (e.g. AliExpress rated 98%+ Specialty stores like BatteryShop).
- 📦 Pay attention to the date of production (the original batteries are indicated on the sticker.
- 🔍 Check for a protection controller (must be included or built into the battery).
⚠️ Note: Do not buy batteries with a capacity above 4200 mAh – they may not fit into the case or overheat. Also avoid “no-name” options without labeling: they often swell through the body. 2-3 month.
3. Tools and preparations for replacement
To replace the battery with the Mi 5s Plus, you will need:
Screen suction cup (∅ 5-7 cm)|Plastic mediators (2-3 pcs.)|Screwdriver. T3 (hull-rotor)|Tweezers (to disconnect plumes)|Hair dryer or thermo-air station (for softening glue)|Isopropyl alcohol (90%+) glue-cleaner|New battery with double-sided tape|Gloves (optional, to protect against glue)-->
In addition:
- 📱 A spare phone to shoot the process (in case something goes wrong).
- 🔌 Charger on the 5V/2A post-substitution testing.
- 🧴 Silicone lubricant (to seal the cover after assembly).
Preparation of the device:
- Turn off the phone and remove it. SIM-map.
- Discharge the battery to 20-30% (the bloated battery does not need to discharge!).
- Remove the back cover (if it has already moved due to swelling) or warm the body with a hairdryer around the perimeter (temperature 60-80 ° C, not higher!).
⚠️ Warning: Do not use metal tools to tweak the body, they can damage antenna lines or plumes. If the glue is too strong, warm it up again with a hairdryer, but do not overheat (maximum 2 minutes per seat).
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If you don’t have a hair dryer, you can use hot water in a bag: apply it to the edge of the case for 1-2 minutes to soften the glue.
Step-by-step instructions for replacing the battery
Disassembly of Xiaomi Mi 5s Plus requires care.
Step 1: Removing the back cover
1. warm up the hair dryer edge of the body (especially near the buttons and charging connector).
2. With a suction cup, raise the screen from the side of the Home button (bottom).
3. Put the plastic mediator in the gap and carefully guide it around the perimeter, separating the lid. Don't push hard - there are plumes inside!
Step 2: Battery disconnection
1 Unscrew 6 screws (screwdriver T3), fixing the metal plate over the battery.
2. With a pincet, disconnect the battery connector (it is white, located at the top of the board).
3. If the battery is swollen, do not try to pull it out by force - first drain the gas, puncture it in a protective bag (outdoors!).
Step 3: Remove the old battery
1. Tap the battery with a plastic spatula and pull it up. If it's glued, use isopropyl alcohol to dissolve the glue.
2. Clean the area under the battery from glue and dust residues (you can use a microfiber napkin).
Step 4: Installation of a new battery
1. Remove the protective film from the new battery and glue it to a double-sided tape (comes with the kit).
2. Connect the battery connector to the motherboard. Make sure it sits tight, or the phone won't turn on.
3. Twirl the screws of the metal plate (do not pull!).
Step 5: Assembly and testing
1. glue the back cover to a new glue (e.g., B-7000) or use the old one if it has retained stickiness.
2. charge your phone 100% and check:
- 🔋 Is the correct percentage of charge displayed.
- 📱 Is there any overheating of the hull.
- ⚡ The phone is turned on/off without hanging.
What if the phone doesn’t turn on after replacement?
Calibration of the battery after replacement
The new battery requires the charge controller to be calibrated, or the percentage of charge will not be displayed correctly.
- Charge your phone to 100% (use the original RAM).
- Turn off the charging and completely discharge the device before turning off.
- Connect the charger and wait 100% without turning on the phone.
- Turn on the device and check the display of charge in Settings → Battery.
Repeat the cycle 2-3 times, and then the controller will learn to correctly determine the capacity.
⚠️ Note: If after calibration the phone is still turned off when 20-30%, It's possible that the battery is defective or damaged, and the battery's plume is damaged.
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Calibration is only needed for new batteries. If you install a used battery, you can skip this step - its controller is already "trained".
6. Frequent mistakes and how to avoid them
Even experienced users sometimes make mistakes when replacing the battery.
- 🔧 Screen plume damage when the lid is sliding. Solution: Use only plastic mediators and don't press the center of the screen.
- 🔥 Overheating the battery with a hairdryer. Solution: Keep the temperature at 80.°C and warm in short intervals (10-15 seconds).
- 📉 Solution: check the contact with tweezers, it has to sit without backlash.
- 💧 Solution: Use the alcohol point-by-point and let it evaporate completely before assembly.
If after the replacement, the phone began to warm up more or discharge quickly, the likely reasons are:
| Symptoms. | Possible cause | Decision |
|---|---|---|
| Phone warms up when charging | Poor battery or damaged charge controller | Check the battery with a multimeter, if necessary, replace it. |
| Charge "jumps" (for example, from 50% to 20%) | No calibration or damaged sensor plume | Calibrate if it doesn’t help – check the plumes. |
| Phone's off. | Not connected battery connector or short circuit | Check the connector, if necessary, contact the service |
7. Should I contact the service?
Replacement of the battery by Mi 5s Plus will cost 800-1500. ₽ (battery) + The service will ask for the same work 2000-3500 ₽ (When it makes sense to give the phone to the master:
- 🛠️ You have no experience in disassembling smartphones.
- 🔧 Phone for warranty (self-repair it cancels).
- 💥 Battery swollen and deformed the body (risk of damage to the board).
- ⚡ After the replacement, problems arose (not turned on, not charged).
If you are confident in your abilities, self-replacement will save money and time, the main thing is to take your time and follow the instructions.
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A service center is the best choice if you are afraid of damaging the motherboard or plumes. For the Mi 5s Plus, it is critical not to overheat the board when soldering (if you need to replace the connector).