How to remove the battery on Xiaomi Redmi 7: the complete guide

Redmi series smartphones have long proven to be reliable devices, but over time, even the highest quality lithium polymer battery loses its capacity. If your Xiaomi Redmi 7 begins to quickly discharge or turn off in the cold, it is likely time to replace the battery. Many users immediately turn to service centers for fear of damaging fragile components, but with the right tools and accuracy, you can perform the procedure yourself.

The process of removing the battery in this model has its own nuances related to the design of the case and the location of the plumes. Unlike older phones with removable covers, it requires partial disassembly of the device. It is important to understand that any interference with the design of the gadget requires caution, especially when working with heating elements and sharp tools.

In this article, we will take a look at every step of the way, from the work place preparation to the final system health check, what tools are needed, how to safely unplug the back cover and what to do if the battery is attached to reinforced tape. Following the instructions will help to extend the life of your device without unnecessary costs.

Workplace preparation and necessary tools

Before starting to disassemble the Xiaomi Redmi 7, you need to organize a comfortable and safe workspace. The surface of the table should be clean, flat and well-lit so that small screws and details do not get lost. The ideal solution is to use a special antistatic mat, although a regular sheet of white paper, on which all the elements are clearly visible, will be suitable.

To successfully complete the task, you will need a minimum set of tools that can be found in any electronics store or ordered online. The absence of even one of them can damage the case or internal components, so it is worth checking the availability of everything you need in advance.

The main list of equipment includes:

• 🔧 Set of screwdrivers (mandatory presence of cross-haired) PH000 and PH00)
• 🎴 Plastic blades (mediators) for opening the body
• 🔥 dryer or warmer
• 🧲 Magnetic mat or organizer for screws
• 🧤 Antistatic gloves (optional, but desirable)

Special attention should be paid to the quality of the suction cup if you plan to use it to lift the back cover. Cheap models can simply unstick from the glass at the moment of tension, which will lead to the slipping of the tool, and it is also recommended to have isopropyl alcohol on hand, which will help dissolve the glue residue during the final assembly.

Security measures and smartphone preparation

There are risks involved in working with lithium batteries, so ignoring safety rules is unacceptable. Damage to the battery shell can lead to its fire or even explosion, so all actions must be calibrated and calm. If you notice that the battery is already swelling, you need to handle it with the utmost care, avoiding any pressure.

⚠️ Warning: Never punch or bend a ballooned battery. If the battery has visible deformities, it should be removed with special care, trying not to damage the shell.

The first step before you start doing physical work is to make sure you're software-ready, you have to shut your smartphone down completely, you've got to hold the power button, and you don't have to try to disassemble a phone that's in sleep mode or just with the screen gone out, and that can lead to a short circuit on the board.

Then the tray should be removed for SIM-This is a mandatory procedure, because the presence of foreign elements in the case can create additional stress on the frame or damage the contacts when bending. Use the original paper clip or a thin point included in the package.

It is also important to remove all protective covers, glass and hydrogel films, which can interfere with the tight fit of the tools to the body. If there are cracks on the back cover, it is recommended to pre-seal them with transparent tape so that the glass does not crumble when heated.

Removal of the back cover Xiaomi Redmi 7

The Redmi 7 design involves mounting the back panel on a two-part adhesive that requires heat treatment to soften. The heating must be uniform and controlled: too high a temperature can damage the display matrix or melt internal plastic elements, and insufficient - lead to chipped glass.

Turn the dryer on at average power and set the temperature at about 80-90 degrees Celsius. Warm the perimeter of the back cover evenly for 2-3 minutes, constantly moving the air flow. Do not hold the hair dryer long in one place, especially in the area of cameras and speakers.

After warming up, apply a suction cup at the bottom of the back cover, closer to the edge, and pull up slightly, while gently inserting the plastic blade into the gap, and move the mediator along the perimeter, gradually releasing the lid from the glue.

• 🔄 Move around without trying to open one side completely.
• 🚫 Avoid using metal blades that can damage plumes
• 💨 If the cover cools and stops moving, repeat the heating procedure.

When all the latches are free, gently lift the back panel. Don't make sudden movements, as some elements may be glued to the lid or thin antenna wires may pass through (although in Redmi 7 antennas are more often integrated into the board).

Dismantling the protective plate and disconnecting the plume

When you remove the back cover, you'll see the inside of the smartphone, which is covered by a plastic protective pad, and this plate is fixed by multiple screws, and it covers the main components, including the battery and connectors, and you have to dismantle this screen to access the battery.

Using a PH000 screwdriver, unscrew all the visible screws that attach the plastic pad. There are usually about 10-12 screws, and they can be of different lengths. It is critical to remember or record the location of each screw, because screwing a long screw into a short hole can break through the board.

When you take off the plate, you'll see the connectors connecting the battery to the motherboard, and the first thing you need to do is turn off the battery connector, and you need to do this with a special plastic blade or nail, putting the connector upwards, and you're not allowed to use metal tools here, because it's guaranteed to short circuit.

⚠️ Warning: After the plume is turned off, the battery can still retain residual charge.Do not allow the contacts of the battery or connector to be closed with metal objects on the board.

If the model has additional plumes running through the protective plate (for example, the plume of the power button or the bottom microphone), they should also be carefully disconnected before completely removing the protection.

Removal of the old battery

The most difficult step of replacing is to extract the power source itself. In the Xiaomi Redmi 7, the battery is attached to the frame using two strips of double-sided tape. Over time, the glue dries up and becomes very durable, so just pulling the tongue may not work.

If you see a retractable tongue on the end of the battery, try pulling it gently while swaying the battery slightly from side to side. Don't put too much effort into keeping the tongue from breaking. If you don't pull or they come off, you'll need to reheat.

Take a hair dryer again and warm up the area around the battery for 1-2 minutes. Be careful not to overheat the battery above 60 degrees, as it is dangerous. Once heated, you can try using a plastic card or a thin fishing line to gently "re-saw" the layer of glue under the battery.

The movements should be smooth, without jerking. If you feel strong resistance, it's better to add a little more heat than risk the integrity of the battery shell. In the process of extraction, try not to deform the battery itself.

• 🌡️ Heat the battery area evenly from all sides.
• 🧵 Use dental floss or a thin line to trim glue
• 🛑 Stop heating if the smartphone case gets too hot for the hands

Once successfully removed, inspect the compartment for glue residues, remove them so that the new battery lays flat and tight. Use a soft cloth slightly moistened with isopropyl alcohol to clean the compartment, keeping the liquid out of the contacts.

Installation of a new battery and assembly of the device

Before installing a new battery, make sure that its performance is fully consistent with the original. For the Redmi 7, the standard capacity is 4000 mAh. Using cheap analogues can lead to unstable phone operation or a quick failure of a new element.

Apply new strips of double-sided tape to the case or use pre-sticked ones on the new battery (if any) carefully insert the battery into the compartment, matching the connector on the board. With a light press, snap the plume until the characteristic click.

Now you can start to reverse assemble. Put a plastic plate in place and twist all the screws in the order you twisted them out. Make sure that no plume is clamped or bent. Then plug the phone into the charger without putting the lid on to make sure the screen and charge indicator react.

⚠️ Warning: The first charge of the new battery is better spent with the phone turned off until it reaches 100.

If the phone is on and shows the right charge level, you can apply glue to the body and press the back cover, evenly spread the glue around the perimeter and tightly press the device, locking it with rubber bands for 15-20 minutes until it completely drys out.

Frequent problems and their solution

Even with a careful disassembly, there may be unexpected situations, such as the phone may not see charging or not turn on, often because the battery connector was not inserted to the end, in which case you will need to carefully remove the cover and reconnect the plume.

Another common problem is that the back cover is cracked when heated, and Redmi 7 is strong enough, but extreme temperature changes or spot heating can be fatal, and if a crack has already appeared, it can be covered with a good sticker or a complete replacement of the back panel.

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Use a B-7000 or B-6000 adhesive to fix the lid – these provide an elastic joint that is easier to remove in the next repair, unlike superglue.

Also, users sometimes experience a calibration error, where the phone shows 100% charge but quickly goes down, which is solved by completely discharging the device before turning off and then charging to 100% when turned off.

In rare cases, settings may need to be reset or flashed if the power controller is “glutting” after replacement, but in 95% of cases the problem is solved by the correct physical installation of a quality battery.

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Battery quality is more important than replacement speed – don’t skimp on the battery by choosing proven suppliers with original labeling.

Questions and Answers (FAQ)