Xiaomi Redmi 5 Plus is one of the most popular budget smartphones of 2018, but even its reliable battery capacity of 4000 mAh begins to lose capacity in 3-4 years. If your device quickly discharges, turns off at 20-30% charge or the case is swollen, it’s time to replace the battery. In this article, you will find a step-by-step photo instruction, a list of necessary tools, tips for choosing a battery and answers to frequent questions.
Replacing the battery on Redmi 5 Plus is a medium-sized task, requiring care, patience, and minimal electronics skills, and the main advantage of this approach is the savings: the service center will charge from 1,500 to 3,000 rubles, while the battery itself costs from 800 to 1,500 rubles, and we will tell you how to do everything right without damaging the plumes or the display.
Before you start, make sure the battery is the problem.
- 🔋 Check battery wear in AccuBattery app (if Health value is below 70%, it’s time to change battery).
- ⚡ Connect the charger: if the smartphone shows Charging interrupted or warmed - this is a sign of malfunction.
- 📏 Inspect the case: if the back cover or screen is raised (battery bloating), the replacement cannot be postponed!
1. Which battery to choose for Xiaomi Redmi 5 Plus
The original battery for the Redmi 5 Plus is labeled BM47 or BM48 (depending on the batch) and a capacity of 4000 mAh. However, the market is full of fakes that will last six months.
- 🏷️ Article: The original must have a code sticker MDY-11-EH or MDY-11-EN.
- 🔍 Appearance: the battery should be clear inscriptions Xiaomi, production date, voltage 3.85V and QR-code.
- 🛡️ Protective film: the original is covered with yellow insulation tape with the Mi logo.
- 💰 Price: too cheap battery (below 800 rubles) - a sure sign of counterfeiting.
Where to buy:
- 🌍 Official stores: Mi Store, Xiaomi Shop (warranty 6 months).
- 🛒 Verified marketplaces: AliExpress (sellers with a rating of 98%+), Wildberries, Ozon (see reviews with photos).
- 🔧 Service centers: Many sell original parts separately.
⚠️ Warning: Fake batteries often have an understated capacity (2,500–3,000 mAh instead of 4,000) and can swell in 2–3 months.
| Type of battery | Capacity | Average price | Pluses | Cons |
|---|---|---|---|---|
| Original. | 4000 mAh | 1200–1800 ₽ | Long service life, exact compatibility | More expensive than analogues |
| Analogue (quality) | 4000-4200 mAh | 800–1200 ₽ | Cheaper than the original, often with improved features | Risk of running into a fake |
| Increased capacity | 5000–6,000 mAh | 1500–2500 ₽ | More working time | Maybe not fit into the body, quick wear. |
2. Battery replacement tools
To disassemble the Redmi 5 Plus and replace the battery, you will need:
- 🔧 Plastic blades (2-3 pieces) - for careful slashing of the lid and plumes.
- ⚒️ The screwdriver (PH00 or PH0) — rear-cover.
- 🔥 Dryer or thermo-air station - for softening the glue (temperature 60-80)°C).
- 🧲 Magnetic mat or container – so as not to lose screws.
- 🩹 Isopropyl alcohol (90%+) — cleaner.
- 🔌 Tweezers - for careful disconnection of plumes.
- 📱 New battery tested, with the correct article.
If you don't have a hair dryer, you can use hot water in the bag (put your smartphone in a sealed bag with warm water for 2-3 minutes) or a silicone heating pad. The main thing is not to overheat the case above 80 ° C, so as not to damage the display.
⚠️ Attention! Don't use metal tools to lid the lid, they'll scratch the hull and can close contacts on the board.
Turn off your smartphone and remove it. SIM-map|Make a backup copy of the data|Charge the battery to 30-50% (to avoid short circuits)|Prepare a workplace with good lighting|Wear an antistatic bracelet (optional)-->
3. Step-by-step instructions: how to disassemble Xiaomi Redmi 5 Plus
Disassembly of the Redmi 5 Plus requires caution - there are many fragile plumes inside. Follow the instructions and do not put too much effort into it.
Step 1. Turn off your smartphone and remove the back cover
- 🔌 Turn off the device and wait for a complete shutdown.
- 🔥 Heat the hair dryer back cover around the perimeter for 1-2 minutes (hold at a distance of 5-7 cm).
- 🕳️ Insert a plastic blade into the gap between the lid and the case (start at the bottom edge where the charging connector is).
- 🔄 Carefully drive the blade along the body, separating the lid. If the glue does not lend itself, warm up more.
Step 2. Unscrew the screws and unplug the plumes.
- ⚒️ Unscrew 10 screws (they can be of different lengths - remember where it was!).
- 🖱️ Disconnect the battery plume (it is glued to the motherboard).
- 📶 Carefully disable the display plumes, camera and fingerprint scanner (use tweezers).
Step 3: Remove the old battery
- 🔥 Warm up the battery with a hair dryer (it is glued to the body).
- 🧹 Put a plastic blade on the battery and pull it up slowly. If the glue keeps up, put the isopropyl alcohol under the battery.
- 🗑️ Remove the glue residue from the case (you can use Scotch or alcohol).
⚠️ Attention! Don't pull the battery by the wires, they can come off! If the battery is swelling, don't puncture it (risk of fire.
💡
If the screws are boiling, moisten them with isopropyl alcohol and wait 1-2 minutes. Do not apply force - the torn slits will complicate the assembly.
4. Installation of a new battery and assembly of a smartphone
Before installing a new battery, check its voltage with a multimeter - it should be in the range of 3.7-3.9V. If less, charge the battery with an external device (for example, iMax B6).
Step 1 Preparing a new battery
- 🧴 Remove the protective film from the contacts (if any).
- 📏 Make sure the size is the same as the old battery.
- 🔌 Stick bilateral tape (comes complete with battery) or apply a thin layer of glue B-7000.
Step 2: Connection and Testing
- 🔌 Connect the battery plume to the motherboard.
- ⚡ Connect the charger for 1-2 minutes – the smartphone should show the charging icon.
- 🔍 If the screen is not responding, check the connection of the display plume.
Step 3: Assembly of the hull
- 🔧 Twisting all screws (do not tug over!).
- 📱 Stick the back cover (use glue) B-7000 double-scotch).
- 🔥 Warm up the hair dryer of the edge of the cover for better fixation.
Charging (must show the correct percentage).
- Sensor, camera and fingerprint scanner.
- No overheating of the battery.-->
5. Frequent mistakes and how to avoid them
Even experienced craftsmen sometimes make mistakes when replacing batteries, and here are the most common problems and solutions.
- 🔋 Smartphone not turned on after assembly: Check the connection of the battery plume and display. Make sure the battery is charged (plug in 10-15 minutes). If it does not help, the power controller on the board may break.
- 📉 Fast discharge of the new battery: Reset settings through Settings → Additionally. → Recovery and reset. Calibrate the battery: fully discharge, then charge to 100% without interruption. Check the applications for background activity (Settings) → Battery → Use of the).
- 🔥 Battery overheating: Make sure the battery is original (fakes are often warmed up); don't use fast charging in the first 2-3 cycles; check if the battery is swollen (if so, replace it urgently!).
If the battery is discharged within a few hours after the replacement, there may be a problem with the power controller on the motherboard, which will require a diagnosis at the service center.
What to do if the battery is blown?
6. How to prolong the life of a new battery
To make the new battery last longer, follow these tips:
- 🔌 Charging: Use an original or certified charger (5V/2A). Do not leave your smartphone on charge overnight (optimally — 20–80%). Avoid overheating (do not charge in direct sunlight).
- 📵 Operation: Do not discharge the battery to 0% (it is better to recharge at 10-15%). Turn off unnecessary background processes (Settings) → Battery → Optimize. Update the software in new versions MIUI Optimized energy consumption.
- 🌡️ Temperature: Optimum temperature for lithium-ion batteries is 10-35°C. Do not leave your smartphone in your car in winter or summer (risk of bloating).
With proper care, the new battery will last 2-3 years without noticeable loss of capacity. If you notice that the smartphone has become discharged faster, repeat the calibration or check for wear in AccuBattery.
7. Alternative ways to solve battery problems
If replacing the battery seems too difficult, consider other options:
- 🔧 Refer to the service: the cost of replacement in the official service Xiaomi — ~1500-2000 rubles (with spare parts) in informal workshops the price is lower (800-1200 rubles), but the risk of counterfeiting is higher.
- 🔄 Buy Power Bank: If the smartphone is rarely used, an external battery of 10,000-20 000 mAh will solve the problem of autonomy).
- 📱 Update: Sometimes a quick discharge is caused by software errors. Check the updates in Settings → The phone. → Updating the system.
- ♻️ If the Redmi 5 Plus is outdated, consider modern models with a good battery: Redmi Note 12 Pro+ (5000 mAh or POCO X5 Pro (5000 mAhh) + fast-charging).
If you still decide to replace the battery yourself, but are afraid to damage the smartphone – practice on an old device or watch video disassembly on YouTube (look for Xiaomi Redmi 5 Plus battery replacement).