Replacement of the battery on the tablet for drawing Xiaomi: disassemble the device without errors

Xiaomi graphics tablets are a popular tool among artists and designers, but even the most reliable models eventually run out of battery stylus or internal battery. If your stylus stopped holding charge and the tablet gives warnings about low battery level, it's time to act. In this article, we will discuss how to replace the battery yourself without contacting the service center.

The replacement process seems simple, but there are nuances, from choosing the right battery to carefully opening the case. Errors can lead to loss of warranty (if it is still valid) or damage to the touch layer. We have collected proven instructions for Xiaomi Mi Pad 5, Xiaomi Pad 6 and graphics tablets of the Xiaomi Smart Pen series, as well as warnings that will help avoid typical problems.

Before you start, ask yourself two questions: which battery should be replaced (in the stylus or the tablet itself) and are you willing to take a risk? If in doubt, you should consult a specialist. But if you decide to act yourself, read on.

1.What batteries are used in Xiaomi tablets for drawing?

In Xiaomi graphics tablets there are two types of batteries:

• 🔋 Built-in battery tablet - lithium polymer battery (usually) 3.7V or 3.8V), It's the one that powers the device itself, and it requires disassembly of the body and soldering.
• ✏️ Stylus battery – removable power element in Xiaomi Smart Pen (most often) AAA or specialized CR2016/CR2032). Change without tools.

How do you know what exactly went wrong?

⚠️ Note: If your tablet is warranty, replacing the battery on its own will invalidate it. In Xiaomi Pad 6 Pro and newer models, the battery is often glued to the body - removing it without experience can damage the plumes.

For styluses Xiaomi Smart Pen 2 and Smart Pen Pro used battery CR2032 (3V). You can buy it from any electronics store, and the key is not to confuse it with the electronics store. CR2016 (thinner and less capacious).

Preparation for replacement: tools and security measures

Before disassembling the device, prepare:

• 🔧 Plastic mediators (to open the body without scratches).
• 🔨 Screwdriver with nozzles (usually Torx) T3 or Phillips #00).
• 🧲 Magnetic mat or screw container (so as not to lose small details).
• 🔥 Hair dryer or thermo-air station (if the battery is glued).
• 🧴 Isopropyl alcohol (for cleaning contacts).

⚠️ Attention: Lithium polymer batteries can ignite when punctured or heated. If the battery is swelling, don't try to remove it yourself.

To replace the battery in the stylus is enough:

1. Carefully twist the lower part of the pen counterclockwise.
2. Remove the old battery (tweezers may be required).
3. Insert a new one, observing polarity (+ upward).

If you're talking about the built-in battery of the tablet, the process is more complicated. In Xiaomi Mi Pad 5 models, the battery is fixed with glue, and in Xiaomi Pad 6 Pro - also with screws.

Disable the tablet and remove SIM-card (if any)

Discharge the battery to 20-30% (Minimizes the risk of fire)

Remove the back cover, starting from the corners (use mediators)

Disconnect the battery plume from the motherboard (photo before disassembly will come in handy!)

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💡 Tip: Before disassembling, take a picture of the location of the plumes and screws. This will help to assemble the device back without errors.

3. Step-by-step: Replacement of the battery in the Xiaomi stylus

Xiaomi Smart Pen and Smart Pen 2 styluses use standard batteries that are easy to replace:

1. Step 1. Take the stylus by the body (not the tip!) and turn the bottom counterclockwise. It should unscrew effortlessly.
2. Step 2: Remove the old battery. If it's stuck, put a nail on it or a plastic card on it.
3. Step 3. Put a new battery in. CR2032 (for the Smart Pen 2 or AAA (The polarity is shown on the pen case.
4. Step 4. Twistle the bottom back. Make sure the contacts fit tightly.

⚠️ Note: If the stylus does not work after replacement, check:

• The correct installation of the battery (turn it over).
• Integrity of contacts (wipe them with alcohol).
• The condition of the tip (possibly needing a spring replacement).

In Xiaomi Smart Pen Pro, the battery can be soldered, which requires a soldering iron and experience with microelectronics, and if you don't have that experience, you should contact the service.

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After replacing the battery in the stylus Xiaomi Smart Pen 2 reset: press the button for 10 seconds. This will help synchronize the pen with the tablet.

4. Replacement of the built-in battery in the Xiaomi tablet: disassembly of the case

This process is more complex and requires caution, and let’s take a look at the Xiaomi Pad 6:

1. Step. 1. Heat the case. Use a dryer at minimum power (or a thermo-air station at a time when you are not using it). 60-70°C) to soften the adhesive around the perimeter of the back cover. 10 so as not to damage the display.
2. Step 2. Autopsy. Put a plastic mediator in the gap between the body and the lid. Carefully lead along the edge, separating the glue. Start at the corner next to the power button.
3. Step 3: Disconnect the plumes. After the lid is removed, disconnect the battery plume from the motherboard (usually fixed by a latch).
4. Step 4: Battery removal. If the battery is glued, put a plastic blade on it. Xiaomi Mi Pad 5 models may need to unfurl the contacts.

Critical detail: in the Xiaomi Pad 6 Pro tablets, the battery is connected to the cooling system.

The new battery is installed in reverse order.

• 🔌 Connect the battery plume last (after fixing the case).
• 🔥 Check the tablet before final assembly (enable, make sure it is charging).
• 🛠️ Use the original glue (for example, B-7000) lock-in.

5. Where to buy a replacement: original vs analogues

For stylus Xiaomi Smart Pen suitable batteries:

• 🔋 CR2032 (3V) — Smart Pen 2 and Smart Pen Pro.
• 🔋 AAA — For early versions (e.g. 2020 Mi Smart Pen).

You can buy them in Leroy Merlin, M-video or AliExpress (a set of 10 pieces costs). ~100 rubles).

To replace the built-in battery tablet, the situation is more complicated:

⚠️ WARNING: When buying a battery on AliExpress or Wildberries, check it out:

• 📦 Reviews (should be a photo of a real product).
• 🔍 Coincidence of an item (for example, MBJ4065 For the Mi Pad 5).
• 🔋 Capacity (do not take batteries with overrated performance - these are fakes).

The cost of the original battery for Xiaomi Pad 6 — near 2000-3000 The analogues will cost you 1000-1500 RUB, but their quality is often worse.

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Never buy batteries labeled "Ultra Capacity" or "Premium" without a certificate. 30-50% below the stated and can damage the tablet.

6. Common mistakes and how to avoid them

Even experienced users sometimes make mistakes, and here are the most common ones:

1. Display plume damage, you can hit flexible cables when you open the mediator, so you can use plastic tools and move slowly.
2. Battery overheating with a hairdryer. 80°C can warp the battery. Solution: heat in short intervals (10-15 seconds).
3. The wrong polarity when you connect. + and −, Solution: Check your photos before disassembly.
4. Using a non-original glue, the cheap glue flakes off over time, and the lid starts to creak. Solution: take this. B-7000 or LOCTITE 406.

💡 Tip: If after replacing the battery, the tablet began to discharge faster, perform the calibration of the battery:

1. Charge the device to 100%.
2. Turn off charging and use the tablet until full discharge (0%).
3. Repeat the cycle 2-3 times.

In models Xiaomi Pad 6 Pro can work protection against non-original batteries, in this case you will have to reset the settings via Fastboot:

fastboot erase battery_data

7. Alternatives to Replacement: How to Prolong Battery Life

If replacement is not required yet, but the battery is getting worse, try:

• 🔌 Calibrate the battery (see instructions above).
• ⚡ Use the original charger (power) 33W for Pad 6).
• 🌡️ Avoid overheating (do not leave the tablet in the sun or near the battery).
• 🔄 Update the firmware - in new versions MIUI Optimized energy consumption.

For stylus:

• ✏️ Keep the pen with the battery taken out if you don’t use it for a long time.
• 🔋 Use high-quality batteries (e.g. Duracell or Panasonic).
• 🔄 Clean the contacts with a cotton swab soaked in alcohol (every 3 months).

If the Xiaomi Mi Pad 5 or Pad 6 is slow to charge, check:

• 🔌 Cable and adapter (try charging another set).
• 🔋 Port port USB-C (clean the dust with a toothpick).
• ⚡ Settings: Go to Settings → Battery → Charging mode and select "Fast Charging».

FAQ: Frequent questions about battery replacement in Xiaomi tablets