How to remove the battery from Xiaomi Redmi 7: disassembling the phone without risks

Xiaomi Redmi 7 is a popular budget smartphone, but even it may need to replace the battery over time. Unlike the flagship models with non-removable batteries, Redmi 7 theoretically allows you to remove the battery yourself, but the process requires accuracy and the right tools. In this article, we will discuss how to remove the battery without damaging the plumes, what mistakes are most often made by beginners, and what to do if the battery is glued to the case.

It's important to understand that Redmi 7 is not designed to easily replace the battery with a user. The manufacturer uses glue to fix the battery, and the body itself is fastened by latches and screws. If you carelessly remove the battery, you can damage the flexible display plume or charging connector, which are the most vulnerable elements of the design. If you've never dismantled a smartphone, you better contact a service center. But if you decide to act yourself, follow the instructions below.

Preparation for disassembly: tools and security measures

Before you remove the battery from the Xiaomi Redmi 7, prepare the workspace and tools.

• 🔧 Set of screwdrivers (cross-haul) PH00 flat-latched)
• 🧲 Suction cup (to remove the display) or thin plastic mediator
• 🔥 Hair dryer or thermo-air station (for softening glue)
• 🧴 Isopropyl alcohol 90%+ (glue-cleaner)
• 📦 Plastic screw tray (so as not to lose)

Also make sure that:

• 🔋 Phone is completely off (not in sleep mode!) Remove SIM-memory-card.
• 🕒 You have 1-2 hours of free time – disassembly requires patience.
• 📸 You took a photo of the original battery (useful when buying a replacement).

⚠️ Warning: Do not use metal tools to tamper with the battery - this can break through the battery and cause fire.

Step 1: Removing the back cover

The Redmi 7 case is latched and glued together, so you can't just open it. Start by heating the edges with a hair dryer (~60°C) for 2-3 minutes, and this will soften the glue.

1. Insert a plastic mediator into the gap between the case and the display at the USB-C connector.
2. Carefully drive the mediator along the edge, snapping the clamps. Don't force it -- if the lid doesn't lend itself, warm it up again.
3. After cracking the bottom, lift the lid at an angle of ~45° (do not remove it completely - it is connected by a fingerprint scanner plume!).

If the lid fails, check:

• ❌ Are there any untwisted screws left (there are no screws, but sometimes users confuse with the Redmi Note 7, where the screws are there).
• ❌ Have you overheated the body - at a temperature above 80°C can damage the display.

Step 2: Disconnect the battery plume

When you remove the lid, you'll see the battery locked in black film, turn off the power plume first, or you risk closing the board, and the plume is under a small metal cover (attached to 1 PH00 screw).

Algorithm:

1. Unscrew the screw and remove the metal cover.
2. Put the battery plume with a plastic spatula (it is fixed with a clamp - pull up, not to the side!).
3. Check with a multimeter that the voltage at the battery contacts is 0V (optional, but recommended).

⚠️ Warning: If after disconnecting the plume the phone accidentally turned on (for example, due to the closure of the power button), immediately disconnect the battery physically - further disassembly under voltage is dangerous!

Step 3: Removing the battery

The battery in Redmi 7 is glued to the body with double-sided tape to remove it.

1. Tap the edge of the battery with a plastic spatula (start with the top where there are no plumes).
2. If the battery fails, warm it up with a hair dryer on the back side (through the back cover) for 1-2 minutes.
3. Put a thin plastic card or mediator under the battery and slowly lead it along the case, separating the glue.

Typical errors:

• 🔨 Use of metal tools → battery-piercing.
• 🔥 Battery overheating → may swell or ignite.
• ⚡ Extruding → damage to the display plume or motherboard.

💡

If the battery is too swelling, don't try to remove it yourself - the risk of fire is too high. Wrap the phone in plastic and take it to a service or recycling point.

Step 4: Installation of a new battery

Before installing the new battery:

• 🧹 Clean the seat from glue residues with isopropyl alcohol.
• 🔍 Check to have double-sided scotch on the new battery (if not, buy separately, for example, 3M 9448A).
• ⚖️ Compare the capacity of the old and new battery (original - 4000 mAh, some analogues may have a smaller capacity).

Installation:

1. Stick the battery to double-sided tape, avoiding distortions.
2. Connect the power plume (must click the clamp).
3. Make sure the plume is not stretched or twisted.

⚠️ Warning: If the phone discharges quickly after replacing, check: The contact quality of the battery plume (sometimes helps to reconnect). → Battery (disable application background activity) battery originality (fakes often have understated capacity).

💡

Even the original battery, after replacement, can show incomplete capacity in the first 2-3 charging cycles. This is normal - the battery needs to "swing".

Frequent questions after battery replacement

After self-replacement, users often face unexpected problems.

1. The phone is not switched on

Reasons:

• Unconnected battery plume or display.
• Close on the board (check with a multimeter).
• The sleeves are often broken when they are broken.

2. Quick discharge

Possible causes:

• 🔋 Low quality of new battery (check labeling).
• 📱 Background processes (turn off auto-start applications in Settings) → Permits).
• 🔌 Faulty charging controller (charge diagnosis required).

3.The phone is warming up

If after the battery replacement Redmi 7 began to overheat:

• Check if the new battery is swelling (even a little bit – it’s dangerous!).
• Update the firmware (sometimes software bugs cause increased energy consumption).
• Remove the cache in Settings → Memory → Clear the cache.

FAQ: Answers to popular questions