How to replace the battery Xiaomi Redmi 5 with your own hands

Smartphone Xiaomi Redmi 5, released in late 2017, has proven to be a reliable budget device, but time does not spare lithium-polymer batteries. If your phone stops holding the charge, turns off at 20% or the body is swollen, then it's time to replace the battery. Self-replacement can give the gadget a second life and save a significant amount of money on the services of the service center.

The process of replacing the battery on the Redmi 5 is not technically complicated, but requires care, since the back cover here is a non-removable part of the case. You will need patience and a minimum set of tools to avoid damaging the plumes or display when opening. In this article, we will discuss in detail each step of the procedure, from preparing the workplace to calibrating the new battery.

Before starting work, make sure that you have at hand a quality replacement for the original battery, designed for a capacity of 3300 mAh. The use of cheap analogues can lead to unstable operation of the device or even damage to the motherboard. Properly selected part and compliance with repair technology is the key to successful recovery of the health of your smartphone.

Tools and workplace preparation required

Quality repairs start with the right organization of the space. You'll need a clean, well-lit surface so that the small screws and parts don't get lost. The light should fall evenly, without glare, so you can clearly see the mounting points and connectors inside the case.

To remove the back cover of the Xiaomi Redmi 5 and replace the battery will require specific tools. Do not try to use knives or metal blades, as they can damage plastic or glass.

• 🔧 Plastic blade (mediator) for neat opening of the body without scratches.
• 🌀 A hair dryer or thermophen to soften the adhesive layer under the cover.
• 🔩 A set of cross screwdrivers (Phillips sizes #00 or #000) for screw twisting.
• 🧲 Magnetic mat or organizer for sorting screws of different sizes.
• 🧴 Isopropyl alcohol or special liquid to remove old glue.

⚠️ Warning: Before starting any work, be sure to completely turn off the smartphone. Attempting to disassemble the on device can lead to a short circuit and failure of the power controller.

It is also recommended to prepare a new battery in advance and, if necessary, a new adhesive layer (B-7000 glue or ready-made adhesive tapes).If there are small children or animals in the house, it is better to move the work to a closed room so that small parts are not swallowed or scattered.

The process of dismantling the back cover of the smartphone

The most difficult step for many users is to carefully remove the back panel. Unlike older models, the Redmi 5 does not have a removable cover, and it is held on a powerful adhesive layer around the perimeter, heating is a key point of this operation.

Turn the dryer on at medium power and start warming the perimeter of the back cover. Keep the hair dryer 3-5 cm from the surface, constantly moving it so as not to overheat one point. Just warm the edges for 2-3 minutes to make the glue plastic.

After warming up, insert the plastic blade into the junction between the frame and the lid, which is usually more convenient to do in the area of the on button or in the lower corner. Don't try to open the gap with metal objects. Drive the blade along the perimeter, gradually separating the lid from the frame.

If the lid doesn't lend itself, don't use force. Better warm up the problem area with a hair dryer again. Sharp movements can cause cracks in the plastic or, worse, damage to the display if the shoulder blade slips in. Act slowly and systematically.

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To facilitate the removal of the lid, you can use a suction cup: glue it to the center of the rear panel, slightly pull up, creating tension, and at this moment enter the spatula into the resulting gap.

Disconnecting plumes and removing the old battery

When you successfully remove the back cover, you'll see the inside of the smartphone, you'll see the main board, the metal screen, and the battery itself, which takes up most of the space, and the first thing you need to do is to disconnect the battery plume from the motherboard.

The plume is connected to the board through a connector, which is often covered by a metal plate or a plastic slat. Carefully unscrew the screws that lock this protection using a thin screwdriver. When you remove the bar, you will gain access to the connector.

To turn off the plume, use a plastic blade or nail. Put the connector up from the bottom, trying not to damage the connector on the board. There should be no sudden jerks. Once the plume is turned off, you can start removing the battery itself.

The battery in Xiaomi Redmi 5 is also fixed with a glue layer. To remove it, you need to warm up the back of the smartphone again (without the lid already) or drip some alcohol under the edges of the battery. You can't pull the wires out of the box, they can come off.

⚠️ Warning: It is strictly forbidden to pierce or deform an old battery. Damage to the lithium polymer battery housing may cause fire or chemical burns.

Use a plastic card or a spatula to gently tuck the battery in from different sides. If you have a special retracting tongue (plate that says "Pull"), use it slowly pulling the battery out. Redmi 5 may not have such a tongue, so warm-up and tucking is the most relevant method.

Installation of a new battery and assembly

Before inserting a new battery, you need to prepare the seat. Carefully remove the residue of the old glue from the frame of the case and on the back of the new battery. The perfect fit for cleaning is a cotton swab dipped in isopropyl alcohol.

You need to apply a new layer of fixation to the new battery, you can use special bilateral adhesive tapes cut out in shape, or you can apply a thin layer of B-7000 glue around the perimeter, and you can not apply glue to the center of the battery, so as not to damage it if it is bloated in the future.

Place the new battery in the compartment, matching the connector to the circuit board. Carefully press the plume until the characteristic click, making sure it's upright and steady. Place a metal or plastic clamping bar and twist the screws.

Now you can start the final assembly, apply a thin layer of glue to the frame of the case (if you don't use the tapes), and gently press the back cover. Spread the pressure evenly around the perimeter so that the glue grabs throughout the area.

For better fixation, it is recommended to put the smartphone under a small load (for example, a stack of books) for 1-2 hours until the glue is completely polymerized.

First start and calibration of the battery

After you have assembled your smartphone, take your time to load the operating system, plug the charger in and leave the phone to charge off for at least 30-60 minutes, which is necessary for the initial activation of the chemical processes in the new battery.

After the initial charge, turn on the phone. If the screen catches fire and the device starts loading, the replacement is successful. However, the charge can be incorrect: the phone can show 15% and suddenly turn off or hold on for a long time at 100%.

The power controller needs to be calibrated to work properly, which helps the system read the actual capacity of the new battery correctly, and a simple procedure that takes you one full charge-discharge cycle.

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Calibration is essential to accurately display the percentage of charge, and without it, the phone can behave unpredictably, turning off when charged.

Discharge the smartphone until completely turned off (0%). Then, without turning it on, charge up to 100%. After reaching 100%, hold on charging for another 1-2 hours. Then you can use the device as normal. It is recommended to perform 2-3 such full cycles.

Frequent errors and troubleshooting

Even following the instructions, beginners can run into problems. One of the common mistakes is poor plume contact. If the phone doesn't turn on or see charging, check the connector again. It may not be fully inserted into the connector.

Another problem is that the new battery is bloated immediately after you buy it, which is a sign of a defective or old battery that has been in storage for a long time, and if the new battery is inflated in the first few days of use, immediately stop operating and replace it with a warranty.

And users often forget about the screws. If you have an extra screw after you build, don't ignore it. Find where it came from, and screw it into place. Lack of attachment can cause the board to back up and damage the plumes when you fall.

⚠️ Warning: If the phone warms up in the battery area after the replacement, it is a malfunction signal.Switch off the device immediately and check the connections or quality of the battery itself.

Sometimes the system may not see the battery at all, and factory resets or flashing will help, but it's often just physical contact or failure of the part itself.

Where to buy a high-quality battery for Redmi 5

Choosing a place to buy is 50 percent of a repair success, there are many fakes on the market that look just like the original, and look for vendors who specialize in Xiaomi components and guarantee the product.

Pay attention to the labeling. Original batteries often have holograms, QR-The fonts on the label should be readable, without errors. Battery weight is also important: too light a part is a sure sign of a small capacity.

A good option is certified third-party brands like Nohon or Baseus, which often outperform stock batteries in quality and capacity.They have built-in protection against overheating and overcharging, which prolongs the life of the smartphone.

Don't skimp on battery by buying the cheapest options without a name. The risk of getting a device that will soar in a month or damage the power controller is too great. A quality replacement will ensure comfortable use of the smartphone for another 2-3 years.