Replacing the battery with Xiaomi Mi5: detailed instructions with photos and tips

Xiaomi Mi5

Mi5

Independent battery replacement on Xiaomi Mi5 — It's a medium-sized problem that requires precision and the right tools, and in this article, we'll look at everything you need to know, from choosing a new battery to taking a smartphone apart. You'll learn what mistakes beginners make most often, how to avoid damage to plumes, and what to do if the phone doesn't turn on after replacing it, and where to buy a quality battery and how to verify its authenticity.

If you have never disassembled smartphones, do not be afraid: with the right approach, even a beginner will cope with the problem. 30-40 The main thing is to follow the instructions and take your time.

Signs that the battery on Xiaomi Mi5 change

A battery is a consumable, and over time, its capacity inevitably declines, and here are the key symptoms that suggest that you need to replace it:

• 🔋 The smartphone is running out of power. 2-3 hours in normal use (social networks, instant messengers, calls).
• 📉 The percentage of charge “jumps”: for example, from 40% immediately drops to 15%.
• ⚡ The phone turns off when 20-30% charge and only activated after connection to charging.
• 🔥 The battery swelled (seen on a raised screen or body).
• 🐢 Charging takes 4+ hour or so, or no further 80-90%.
• 💥 The phone overheats during charging or working.

The last point is particularly dangerous: a ballooning battery can damage the display, the motherboard, or even ignite. Mi5 Became "bubbled" or between the screen and the frame appeared gaps - do not postpone the replacement!

Check the status of the battery using applications such as AccuBattery (Android) or CPU-Z. They're going to show you the actual capacity of the battery, and if it's down to 70 percent of the 3,000 mAh, it's time to act.

⚠️ Warning: If the battery is swelling, don't try to prick it or bend it! This can cause fire.

What battery to choose for Xiaomi Mi5: original vs analogue

Original battery for Xiaomi Mi5 markable BM43 And it's a rated capacity of 3,000 mAh, but it's almost impossible to find it on sale today -- Xiaomi has long since retired the model. There are three types of replacements on the market:

1. Original batteries with disassembly (used) - a risky option, as their real status is unknown.
2. Licensed analogues from proven brands (Baseus, Remax, Patona) - the best choice in terms of price / quality ratio.
3. No-name batteries are cheap, but often with low capacity and short lifespan.

We recommend you to stop with the second option. A good alternative to the original is the Baseus batteries. XM-BM43) They're Remax, or ProCare, and they're overheating and bloating, and they're also close to the original capacity (2800-2900 mAhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh).

Cost of quality analogue — 800-1500 rouble 2026 Cheap batteries per year. 300-500 RUB usually last no more than six months and can damage the charging controller.

Before buying, check the reviews of the seller and ask for a photo of the battery with the label.

• 🏷️ Inscription Xiaomi BM43 or Lithium-ion Battery.
• 📏 Sizes: 68 × 60 × 3,85 mm (tolerance) ±0,5 mm).
• 🔌 Connector with 4 contacts (two extremes for thermistor).

⚠️ Note: If the battery does not have a thermistor (a small black chip next to the connector), it cannot be installed in the battery. Mi5 — This will cause overheating and failure of the power controller.

Xiaomi Battery Replacement Tools Mi5: what's needed

To replace the battery on Xiaomi Mi5 You'll need a minimum set of tools, most of which you can buy from Chinese stores (like AliExpress) or electronics stores:

• 🔧 Plastic blades (2-3 (a) for the purpose of scoring and scoring.
• 🔨 Cross screwdriver (PH00 or PH0) — hull-rotor.
• 🧲 Magnetic mat or tray - so as not to lose screws.
• 🔥 Dryer or thermo-air station - to soften the glue under the battery.
• 🧴 Isopropyl alcohol (90%+) — glue-residue.
• 📦 New bilateral scotch (e.g, 3M 9448A) — battery-lock.
• 🔋 Multimeter (optional) – to check the battery voltage.

If you don't have a hair dryer, you can use a plastic card (like a bank card) to cleanly separate the battery, but it will take more time and effort, and a suction cup (like a screen shooter) will also be useful, but it's not necessary.

Important: don't use metal tools to tamper with the battery! This can lead to short circuits. If the glue is too strong, it's better to warm up the case with a hairdryer (temperature not higher than 60).°C), not force.

Step-by-step: how to disassemble Xiaomi Mi5 and replace the battery

Now, to the most important step, disassembling the smartphone and replacing the battery, follow the instructions carefully so as not to damage the plumes or motherboard.

Step 1: Disconnect and disassemble the body

1.Switch off Xiaomi Mi5 and remove the tray for SIM-map.

2. Heat the back cover with a hair dryer (1-2 Or put your phone on a warm battery, which will soften the glue.

3. Carefully apply a plastic blade to the lower edge of the body (near the USB-Type C connector).

4. Swipe around the perimeter, separating the lid. Be careful - there is a fingerprint scanner plume at the top!

Step 2: Disconnecting the plumes

1 Unscrew 6 screws (cross screwdriver) fixing the metal plate.

2. Remove the plate and gently disconnect:

• 🔌 Battery plume (black connector).
• 📱 Display plume (white connector).
• 👆 Footprint scanner plume (small connector at the top of the scanner).

Use a plastic spatula to plug the connectors.

Step 3: Remove the old battery

1. Tap the battery with a plastic card or a spatula on the side (where there are no plumes).

2. If the battery fails, warm it up with a hair dryer (maximum 60)°C) and try again.

3. Take the battery out carefully. If it's blown up, don't bend it or press it!

Step 4: Installation of a new battery

1. Remove the residues of the glue from the body with isopropyl alcohol.

2. glue the new bilateral tape to the place of the old.

3. Connect the plume of the new battery and check if it holds tight.

4. Collect the phone in reverse order, making sure all plumes are connected.

After assembly, turn on Mi5 If the phone doesn't turn on, check the battery's plumes and contacts.

Common Mistakes When Replacing a Battery and How to Avoid Them

Even experienced craftsmen sometimes make mistakes that lead to Xiaomi breakdown. Mi5. Here are the most common ones and ways to prevent them:

• 🔧 Damage to the fingerprint scanner plume - it's very fragile! Always unplug it last and fix it first when you build it.
• 🔥 Battery overheating with a hairdryer - if the temperature is above 60°C, the glue melts, but the risk of battery bloating increases.
• 📉 Fragile fixation of the new battery - if it hangs, contacts may move away.Always use new two-way scotch.
• ⚡ Short circuit – do not touch the battery contacts or motherboard with metal tools.
• 🔄 Incorrect polarity – there is a marking on the battery «+» and "-," combine it with the connector on the board.

Another common problem is that the phone turns on but doesn't charge.

• Charging controller (microchip) damaged BQ24192 motherboard).
• The USB-Type C plume has gone.
• New battery malfunctions (check voltage with multimeter - it should be) 3,7-4,2V).

If the battery runs out too quickly after replacing, you may have bought a fake with an undercapacity, in which case only a re-replacement will help.

💡

Before you finish building, turn on the phone without the back cover and check how the new battery behaves: whether it's charging or warming up, which will save time if something goes wrong.

How to extend the life of a new battery on Xiaomi Mi5

To keep your new battery lasting as long as possible, follow these tips:

• 🔋 Avoid full discharge – charge your phone when 10-20% charge.
• ⚡ Don’t use “cheap” charges – they can damage the power controller.
• 🌡️ Don’t overheat your phone – don’t leave it in the sun or near heat sources.
• 📵 Disable unnecessary functions (GPS, Bluetooth, 4G), unless you use them.
• 🔄 Calibrate every 3 months: completely discharge and charge your phone.

It is also recommended to turn off Quick Charge in the settings if you are not in a hurry.This will reduce the load on the battery.

Settings → Battery and performance → Additional → Disable fast charging

If you use Mi5 Like a second phone and it often lies idle - keep it charged 40-60% in a cool place (but not in the refrigerator!).

Should I change the battery myself or contact the service?

Replacement of battery on Xiaomi Mi5 cost 800-1500 ruble (cost of battery) + The service center will ask for the same work. 1500-2500 You will receive a guarantee (usually) 1-3 month).

When to contact the service:

• 🛠️ You have no experience in disassembling smartphones.
• 🔧 Phone guarantee (although for the Mi5 It's no longer relevant).
• 💥 Battery swollen and deformed the body - may need to replace the screen.
• ⚡ After self-replacement, the phone does not turn on.

When you can handle it yourself:

• 🔋 You have the necessary tools and time.
• 📱 The phone is no longer guaranteed.
• 💰 You want to save money.
• 🛠️ Ready to follow instructions carefully.

If you decide to use the service, choose vetted workshops with reviews. Avoid "garage" craftsmen who can install a cheap battery or damage the fee.

💡

The main thing when replacing the battery is accuracy. 80% of breakages in self-repair are due to haste or the use of inappropriate tools.

FAQ: Frequent questions about replacing the battery with Xiaomi Mi5