Xiaomi Redmi 5 is one of the most popular budget smartphones of 2017-2018, which is still used by many users. However, over time, even the most reliable equipment wears out, and the battery is the first part that needs to be replaced. If your Redmi 5 starts to quickly discharge, turn off in the cold or the case is swollen, it’s time to think about a new battery.
In this article, we will discuss which battery is installed in the Xiaomi Redmi 5 by default, which analogues are suitable for replacement, how to distinguish the original from a fake and what to consider when installing yourself. You will also find step-by-step instructions, useful tips and answers to frequent questions. Don’t spend money on a service center – with the right approach, you can replace the battery at home in 20-30 minutes!
Technical characteristics of the original Xiaomi Redmi 5 battery
Smartphone Xiaomi Redmi 5 (model number m1803e7sg for the global version) is equipped with a non-removable lithium-polymer battery with the following parameters:
- 🔋 Capacity: 3300 mAh (nominal, real capacity after 2-3 years of operation is reduced to 60-70%).
- 📏 Dimensions: 146 × 70 × 3,5 mm (exact dimensions are critical when choosing an analogue!).
- ⚡ Nominal voltage: 3.85 V (typical for Xiaomi Li-Pol batteries).
- 🔌 Type of connector: Standard 2-pin connector with thermistor (overheating protection).
- 🏷️ Original article: MBJ4084 (may differ for different parties).
Important: in some versions of Redmi 5 (for example, for the Indian market) installed batteries with a capacity of 3200 mAh. Check the exact capacity can be in the settings of the smartphone on the way Settings → About phone → Battery status or using applications like AccuBattery.
Xiaomi’s original batteries are labeled with the brand logo, have a holographic sticker and QR- code for authentication. However, even “originals” from official suppliers (such as Desay or Sunwoda) can vary in quality depending on the batch.
Signs of battery wear: when is it time to change?
Xiaomi Redmi 5 battery is designed for 300-500 full charge cycles, after which the capacity drops to 70-80% of the original, and further operation becomes uncomfortable.
- 🔄 The smartphone discharges in 4-6 hours with moderate use (previously held a day).
- ❄️ Shuts down in the cold or at temperatures below +10°C (even at 30-40% charge).
- 🔥 Overheats during charging or playing (battery swells, body deforms).
- 📉 The percentage of charge jumps (e.g., from 50% to 20% at once) or the phone turns off at 10-15%.
- ⚡ Charging takes too long (more than 3 hours to 100%) or is interrupted.
If any of these signs show up, check the battery's status software.
- Install the AccuBattery app from Google Play.
- Charge your phone to 100% and wait until it is completely discharged (before it is turned off).
- Check out the actual capacity in Battery Health, if it's below 2,000 mAh, you can't put off replacing it!
⚠️ Warning: A bloated battery is not only a reduction in capacity, but also a risk of fire or explosion. If the smartphone case deforms (the screen is "up", the back cover is moving away), immediately turn off the device and do not use it until the battery is replaced!
What battery to choose for replacement: original vs analogues
When choosing a new battery for Xiaomi Redmi 5, you have three options: the original battery, certified counterparts and budget replacements.
| Type of battery | Advantages | Deficiencies | Average price (2026) |
|---|---|---|---|
| The original (Xiaomi) | ✅ Guaranteed compatibility✅ Stable firmware operation✅ Long service life (when properly operated) | ❌ High cost❌ Risk of getting a fake❌ Hard to find on sale (decommissioned) | 1 500–2 500 ₽ |
| Certified analogue (Desay, Sunwoda, ATL) | ✅ Quality close to the original✅ Affordable✅ Easier to find in stores | ❌ Capacity may vary slightly (3200–3400 mAh)❌ Less commonly, but there are fakes. | 800–1 500 ₽ |
| Budgetary analogue (unknown brands) | ✅ Low price ✅ Quick delivery (available on AliExpress, Wildberries) | ❌ Capacity often understated (2500–3,000 mAh instead of the stated 3300)❌ Quickly fails (6–12 months)❌ Risk of bloating or overheating | 300–700 ₽ |
Our advice: the best option is certified analogues from Desay or Sunwoda. They are almost equal to the original, but they cost 1.5-2 times cheaper.
- 🔋 Desay MBJ4084 (complete analogue of the original, capacity 3300 mAh).
- 🔋 Sunwoda SWD-3300 (good build quality, suitable for all Redmi 5 modifications)
- 🔋 ATL AT3300 (slightly thinner than the original, but compatible with the body).
⚠️ Warning: When buying a battery on AliExpress or Wildberries, be sure to check reviews! Often sellers indicate a capacity of 3300 mAh, and in fact comes a battery of 2800-3,000 mAh. Look for sellers with a rating above 98% and a number of reviews from 500.
💡
Before buying, ask the seller to send a photo of the battery with a holographic sticker and QR- code. Xiaomi original batteries always have a unique serial number, which can be checked on the manufacturer's website.
Step-by-step: how to replace the battery in Xiaomi Redmi 5 independently
Replacing the battery in Redmi 5 doesn’t require a soldering iron or special skills, but it will require care.
- 🔧 Plastic blade (or mediator) for disassembling the housing.
- 🔧 Cross screwdriver (size) PH00).
- 🔧 Screen suction cup (optional, facilitates removal of the lid).
- 🔧 New battery (check compatibility!)
- 🔧 Double-sided tape or glue B-7000 (for battery fixation).
- 🔧 Fen (for softening the glue if the body is tightly seated).
If everything is ready, follow the instructions:
Turn off the phone and remove it. SIM-memory-card
Charge the battery to 20-30% (it is safer when disconnected)
Prepare the workplace (clean surface, good lighting)
Take a picture of the plumes before disassembling-->
- Removing the back cover: Hair dryer the edge of the body (don't direct hot air to the screen!) Carefully shovel the bottom edge of the cover and lead it along the body, snapping the latches. Be careful - the fingerprint scanner plume is glued to the cover!
- Battery Disconnect: Unscrew the 4 screws that hold the metal plate over the battery. Unplug the battery connector with a plastic blade (do not use metal tools!).
- Removing the old battery: The battery is glued to the body. Tuck it on the side and slowly pull it up with a spatula, and if the glue is too strong, you can drip some isopropyl alcohol under the battery.
- Installation of new battery: Make sure the new battery matches the size and location of the connector. Stick it onto double-sided tape or B-7000 glue. Connect the connector and lock the metal plate.
- Phone assembly: Make sure all plumes are connected (especially fingerprint scanner!) Close the back cover by snapping the perimeter clips. Turn on the phone and check the charge.
If the phone is not switched on after replacement:
- 🔌 Check if the battery connector is tightly seated.
- 🔄 Try to press the power button for 10-15 seconds (reset).
- 🔋 Connect the charger – sometimes a new battery requires an initial charge.
What to do if the new battery is quickly discharged?
Frequent battery replacement errors and how to avoid them
Even experienced users sometimes make mistakes that lead to a phone breakdown or a new battery crashing quickly, and the most common ones are:
- 🔥 Use metal tools -- you can close contacts on a board or damage the plumes. Always use plastic blades!
- 🔌 Undisconnected battery when disassembled -- even a phone that is turned off can get a short circuit. Always disconnect the battery first!
- 📏 Battery size mismatch – if a new battery is thicker or thinner than the original, it can press on the screen or dangle in the case.
- 🧴 Excess glue — glue B-7000 or double-sided tape must not go beyond the edges of the battery, otherwise they may fall on the board.
- 🔋 First charge "up to 100%" - new Li-Pol batteries need to be discharged to 0% and charged to 100% 2-3 times to calibrate the controller.
Another common problem is that the phone doesn't see the new battery.
- Bad contact in the connector (check if the plug is bent).
- Reset the controller settings (you need to give the battery a rest for 10-15 minutes after connection).
- Firmware incompatibility (update MIUI to the latest version).
💡
If the battery starts to overheat after you change, turn it off immediately! This is a sign of a short circuit or a malfunction of the new battery.
Where to buy a battery for Xiaomi Redmi 5: checked stores and prices
You can buy a battery for Redmi 5 in online stores, marketplaces or service centers, we have collected proven options with current prices (for 2026):
| Shop/Plaza | Type of battery | Price (₽) | Time of delivery | Pluses | Cons |
|---|---|---|---|---|---|
| AliExpress | Original/analogue | 500–1 500 | 10–30 days | ✅ Low prices ✅ Great selection | ❌ Long-term delivery❌ Risk of counterfeiting |
| Wildberries | Analogues (Desay, Sunwoda) | 800–1 800 | 3-7 days | ✅ Fast delivery✅ Return 14 days | ❌ Limited range |
| Official Mi Shop | Original (if available) | 2 000–2 500 | 1-3 days | ✅ Quality assurance✅ Quick delivery | ❌ High price ❌ Often not available |
| Local service centres | Original/analogue | 1 000–2 000 | 1 day | ✅ Can be checked before purchase✅ Installation included in price | ❌ Prices are higher than on the internet |
Our advice is that if you're not confident, you'd better buy a battery on Wildberries or AliExpress (with good reviews) and take it to a replacement service center, which is cheaper than buying the original from the Mi Shop.
When buying on AliExpress, pay attention to the following sellers (according to user reviews):
- 🛒 Xiaomi Mi Store Official (but often sells analogs rather than originals).
- 🛒 DYS Battery Store (specialized in batteries for Xiaomi)
- 🛒 HQ Battery Supplier (good reviews for Desay analogues)
How to prolong the life of a new battery: the rules of operation
Even the best battery will not last long, if you do not follow the simple rules. Here is what you need to do to keep the battery in Xiaomi Redmi 5 last longer:
- 🔋 Avoid full discharge – charge your phone at 10-20% charge, without waiting for it to turn off.
- ⚡ Don’t keep charging all night – turn off power after 100% (or use smart timer outlets).
- ☀️ Don't overheat your phone -- don't leave it in the sun, don't play heavy games while charging.
- 🌡️ The optimum temperature is operation at 10-35 °C. In the cold, the battery goes down faster, and in the heat degrades.
- 🔌 Use the original RAM – charging with AliExpress for 100 ₽ can damage the power controller.
- 📵 Disable unnecessary functions — GPS, Bluetooth, autosynchronization, and background apps put the battery down hard.
We also recommend calibrating the battery after replacement:
- Charge your phone to 100% and hold on charging 1-2 hours.
- Turn off the power and discharge until it is automatically turned off.
- Charge again to 100% without interruption.
- Repeat the cycle 2-3 times.
This will help the power controller to correctly determine the capacity of the new battery.
💡
MIUI has a hidden battery optimization feature in its settings. Go to Settings → Battery and Performance → Battery settings and enable Adaptive Charging. This will slow battery wear by limiting charge to 80% at night.