Xiaomi Redmi 4A — One of the most popular budget smartphones of the brand, released in 2016 Despite its modest performance, it's still used by many users because of its reliability, but over time, even the best battery pack loses capacity: the phone starts to run out in a few hours, turns off when you're in a state of emergency. 20-30% It's not charging or even keeping the screen on. 4A He began to die through 2-3 One hour after charging, it’s time to replace the battery.
Replacing the battery on this model is complicated by the adhesive fixation of the back cover and the fragility of the plumes, but with the right approach, you can do it yourself. In this article, you will find step-by-step instructions with the photo, tips for choosing an original or high-quality analog of the battery, and a list of tools that you can not do without.
Before you start, consider your own strength: if you've never done electronics, you'd better go to a service center. But if you're willing to take a risk, follow our recommendations, and your Redmi. 4A It will work like new again!
Signs that the Redmi battery 4A need to be replaced
It's not always a matter of battery wear that causes a phone to run out of power, sometimes software failures or apps' background power consumption, and to determine exactly what the battery is to blame, check for the following symptoms:
- 🔋 The phone's running out. 50% more 1-2 with minimal load (for example, in standby mode).
- 📉 The percentage of charge “jumps”: for example, from 40% immediately drops to 15%, and then rises again.
- 🔌 The smartphone is turned off when 20-30% charge and not activated without connection to the charger.
- 🔥 The battery is swollen (this is visible by the raised back cover or the increased gap between the case and the screen).
- ⚡ The phone gets very hot while charging or working, even if heavy apps aren’t running.
If at least 2-3 The items on the list are relevant to your situation, most likely the battery is worn out, and for final diagnostics, you can use applications like AccuBattery (available on Google Play), which will show the actual capacity of the battery and the degree of wear and tear. 70-75% primordial (3120 MAAh for Redmi 4A), battery-change.
⚠️ Warning: If the battery is swelling, stop using the phone immediately! A bloated battery can damage internal components or even ignite. Don't try to prick or squeeze it - it's dangerous!
It's also worth checking if the rapid discharge is software-related.
- Restart your phone in Safe Mode (hold the power button) → long tap on "Switch off» → «Restarting in Safe Mode»).
- Watch the discharge throughout the day. If the phone is in safe mode for longer, the problem is in one of the installed applications.
- Return to normal mode and remove suspicious programs.
What battery to choose for Xiaomi Redmi 4A: original vs analogue
The quality of the new battery depends on how long your smartphone will last after replacing. 4A:
| Type of battery | Pluses | Cons | Average price (2026) |
|---|---|---|---|
| The original (Xiaomi) | Guaranteed quality and compatibility Long service life (500)+ Charging cycles) Exact capacity (3120 mAh) | High cost It is difficult to distinguish from counterfeit Long delivery (if ordered from official sites) | 1 200–1 800 ₽ |
| Qualitative analogues (e.g, CAMELION, Baseus) | Price below the original on 30-50% Good quality with the right choice of brand Quick delivery (available in Russian stores) | The capacity may be understated (for example, 2800 instead 3120 mAh) Less resource (300-400 cycles) Risk of forgery | 600–1 200 ₽ |
| Cheap no-name analogs | Minimum price Quick replacement (available in every service) | Capacity is often lower 2000 MACH rapidly losing capacity (100-200 Risk of fire or bloating May damage the phone's power controller | 300–600 ₽ |
We recommend choosing between the original battery and proven analogues from well-known brands.
- 🔍 Check out the article: the original battery for Redmi 4A markable BM47 or MB-J10.
- 📦 The package must have a hologram and QR-authentication code (can be scanned through the Xiaomi Authenticity Check app).
- 🔋 The capacity must be at least 3000 mAh. If the seller indicates 4000+ mAh is a hoax.
- 🛡️ Buy only from trusted sellers (official Xiaomi stores, AliExpress with a high rating, Beru, Svyaznoy).
⚠️ Warning: Some sellers fake the original using fake holograms. To avoid being scammed, ask the seller for a photo of a real product with a serial number and check it through the official Xiaomi website.
If you buy a battery in an offline store, bring a multimeter or-power This can help you avoid buying a dead battery.
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Before buying a new battery, take a picture of the old one on both sides, which will help you compare connectors and dimensions if the seller sends an incompatible model.
Required tools for battery replacement
To replace the battery with Redmi 4A You'll need a minimal set of tools. Don't try to do without them, because it can damage the plumes or the body!
- 🔧 Plastic blades (mediators) - for tidying the lid and unplugging the plumes. Metal tools can scratch the body.
- 🔨 Cross screwdriver (PH00 or PH0) — Use a magnetic one to keep the small parts from getting lost.
- 🧲 Magnetic mat or container – so as not to lose screws and fastenings.
- 🔥 Hair dryer or thermo-air station - for softening the glue (optional, but simplifies disassembly).
- 🧴 Isopropyl alcohol (90%+) — glue-residue.
- 📏 Plastic scraper or credit card – to separate the battery.
- 🔌 Tweezers – to work with small details.
- 🔋 New battery – tested and charged on 30-50% (completely!).
Also prepare the workplace:
- 🪑 Work at a table with good lighting.
- 📱 Place your phone on a soft surface (such as a napkin) to avoid scratching the screen.
- ⚡ Turn off the phone and remove it. SIM-card and memory card (if installed).
⚠️ Warning: Do not use knives, scissors or other sharp metal objects to separate the lid! this can damage the plumes or leave scratches on the body.Plastic blades are inexpensive (from 50 ₽ for the set, but will save you hundreds of rubles on repairs.
If you don't have a hair dryer, you can do without it, but it takes longer to disassemble. In extreme cases, use a regular hair dryer at maximum temperature, but keep it at a distance. 10-15 See from the phone to avoid overheating the plastic.
Buy a new battery (proven, with a hologram)|Prepare tools (scapula, screwdriver, tweezers)|Charge the new battery on 30-50%|Turn off the phone and remove it SIM-map|Organize a clean, well-lit workplace-->
Step-by-step instructions for replacing the battery with Xiaomi Redmi 4A
Now, to the most critical stage, disassembling the phone and replacing the battery, follow the instructions carefully, and keep your steps open.
Step 1: Removing the back cover
Redmi back cover 4A glued around the perimeter, so it must be carefully separated without damaging the plumes.
- Heat the phone edge with a hairdryer (especially in the area of power and volume buttons) during 1-2 It'll soften the glue.
- Insert a plastic spatula in the gap between the lid and the case at the headphone jack (top of the phone).
- Carefully drive the shoulder blade along the edge, gradually detaching the lid, and if you feel resistance, warm up the place again with a hairdryer.
- As soon as the lid begins to move away, do not pull it sharply - the fingerprint scanner plume passes under it (if it is in your model).
- Disconnect the scanner plume (if present) and remove the cover completely.
On some versions of Redmi 4A The fingerprint scanner loop is missing – in this case, the cover is removed without additional manipulations.
Step 2: Unscrew the screws and remove the metal plate
Under the lid, you'll see a metal plate that covers the battery and other components, and it's attached to 10 screws of different lengths -- remember or photograph their location, and then screw them back in correctly!
- Unscrew all the screws and carefully remove the metal plate. It can be glued — put it in a spatula.
- Under the plate you will see the battery, motherboard and plumes.
- Disconnect the battery plume (it is located at the top of the battery, next to the camera). To do this, gently attach the connector with a plastic blade.
Don't pull the plume with force, it's very fragile! If the connector doesn't lend itself, check if the latch is holding it (sometimes you have to lift it slightly).
Step 3: Remove the old battery
The battery in the Redmi 4A is glued to the body with double-sided tape to remove it.
- Tap the battery with a plastic spatula or credit card on the side (where there are no components).
- Carefully drive the blade under the battery, separating it from the body. If the glue is too strong, drop some isopropyl alcohol under the battery, it will dissolve the glue.
- Take your time! If you pull too hard, you can damage the flexible plume of the display that runs under the battery.
- Once the battery starts to go, remove it completely.
If the battery is swelling, don't push it or pierce it! Take it out carefully, trying not to deform.
Step 4: Installation of a new battery
Before installing the new battery:
- Make sure that there is no dust or glue residue on its contacts.
- Make sure the battery plume is not damaged.
- If the new battery comes with adhesive base, remove the protective film and gently press it against the body.
- If there is no glue, use bilateral scotch (for example, 3M 467 or similar).
After installation:
- Connect the battery plume to the motherboard.
- Make sure the plug is clicked (should be a slight click).
- Put the metal plate in place and twist all the screws (observe their location!).
- Connect the fingerprint scanner plume (if any) and secure the back cover.
Step 5: Checking the performance
Before you complete the phone, check if everything works:
- Connect the charger and make sure the phone is charging.
- Turn on your smartphone and check that it correctly determines the level of charge.
- Make sure there is no overheating (the battery should not be hot after it is overheated). 10-15 charge-minutes).
- Check the camera, speakers and buttons – sometimes the plumes can shift during disassembly.
If everything is working properly, assemble the phone completely and seal the lid (use new glue or double-sided tape if necessary).
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The most common mistake when replacing a battery is to damage the plume of the display or fingerprint scanner. Always use plastic tools and don't put too much effort into it!
Common Mistakes and How to Avoid Them
Even with a careful battery replacement, you can make mistakes that will cause your phone to break, and here are the most common ones and ways to prevent them:
- 🔌 The battery plume damage happens when you pull too hard on the connector. Solution: always stick the connector on the side with a plastic blade, don't pull it up.
- 🔥 Overheating components with a hairdryer - if you hold the hairdryer too close, you can melt plastic or damage the chips.Solution: Keep the hairdryer at a distance 10-15 Do not heat one place for longer. 30 seconds.
- 📱 Dust or debris coming under the screen - after dismantling under the glass, there may be moulds. Solution: work in a clean room and wipe the components with a lilac-free wipe.
- 🔋 Use of a non-original battery of poor quality - cheap batteries can swell or disable the power controller. Solution: only buy proven batteries (see section above).
- 🔧 Mixed screws — if you screw a long screw into a place where it should be short, you can damage the motherboard. Solution: photograph the location of the screws before unscrewing.
- 💧 So, if you put isopropyl alcohol on a board, alcohol can damage your contacts. Solution: just apply it to the glue under the battery, avoiding other components.
If after replacing the battery, the phone does not turn on or behaves strangely (for example, does not charge, overheats, spontaneously turns off), possible reasons:
- 🔌 Unconnected or damaged battery plume.
- 🔋 New battery defective (check it with a multimeter).
- 📱 Damage to the power controller on the motherboard (diagnosis is required in the service).
⚠️ Warning: If after replacing the battery, the phone began to warm up strongly or does not hold a charge (discharges for a battery). 1-2 Shut it off immediately and remove the battery! This may indicate a short circuit or a malfunction of the power controller!
What if the phone does not turn on after the battery is replaced?
How to prolong the life of a new battery
Even the best battery pack loses capacity over time, but proper operation can slow this down significantly.
- 🔋 Avoid full discharge – try to recharge your phone when the charge drops to 15-20%. Full discharge (0%) greatly reduces the battery life.
- ⚡ Don't keep your phone on charge all the time -- turn off the charger after you reach 100%. Prolonged charging at full charge accelerates degradation.
- 🌡️ Avoid overheating and hypothermia – the optimal temperature for lithium-ion batteries: from 10°C to 35°Do not leave your phone in the sun or near heat sources.
- 📵 Don't use cheap chargers, they can deliver unstable voltages that harm the battery. Use original RAM or certified analogues (e.g. from Baseus or Anker).
- 🔄 Calibrate the battery periodically – once in a while 2-3 Fully discharge the phone before turning off, and then charge until 100% It helps the controller to correctly determine the level of charge.
- 🚫 Do not use your phone while charging for resource-intensive tasks (games, video, navigation) – this increases battery heating.
It is also worth turning off unnecessary background processes that drain the battery:
- Turn off Auto-Update apps in Google Play.
- Limit the background activity of applications in settings (Settings) → Annexes → Permits → Auto-start).
- Enable Battery Saving Mode (Settings) → Battery).
- Reduce the brightness of the screen and reduce the waiting time before turning off the display.
By following these rules, you can extend the life of a new battery. 1.5-2 Even with intensive use of the year.
Cost of battery replacement in service center vs self-repair
If you're not confident, you can trust a battery replacement to a professional, but the cost of the service can vary greatly by region and service center.
| Replacement option | Cost (2026) | Pluses | Cons |
|---|---|---|---|
| Official Xiaomi Service Center | 1 500–2 500 ₽ (original-only) | Work and spare parts warranty Original battery Professional equipment | Long wait (sometimes) 1-2 High price Not all cities have official services |
| Informal service centre | 800–1 500 ₽ (with its battery)1 200–2,000 ₽ (battery-powered) | Quick implementation (1-2 Price lower than in the official service You can choose a high-quality analogue | There is no guarantee for spare parts The risk of running into unqualified craftsmen Can use unoriginal parts |
| Self-sustaining replacement | 600–1 500 ₽ (just the cost of AKB) | Minimum costs You can choose any battery Electronics Repair Experience | Risk of damaging phone No job guarantee Requires time and tools |
If you decide to use the service, choose a trusted workshop with good reviews.
- Make a backup copy of the data.
- Find out which battery will be installed (original or analogue).
- Ask for a job guarantee (usually) 1-3 month).
Self-replacement is financially beneficial, but requires care: If you’ve never disassembled your phones, practice on an unnecessary device or watch YouTube video tutorials (like those from Repair Universe or iFixit channels).