Replacing the battery on Xiaomi Redmi Note 4X: prices 2026, where cheaper and how to save

Why the Redmi Note 4X Battery Fails and When to Change It

Xiaomi Redmi Note 4X (model index mido) was released in 2017, but still remains popular among users due to its balanced characteristics and low price. However, after 5-7 years of operation, even the most reliable battery loses up to 50-70% of capacity, which leads to a sharp reduction in battery life. If your device discharges in 2-3 hours with moderate use or suddenly shuts down at 20-30% charge, these are sure signs of battery wear.

The manufacturer claimed a battery life of 500-800 charge cycles, but the real life depends on the operating conditions: overheating, using non-original chargers, deep discharges to 0% and constant charging to 100% accelerate degradation. In 2026, most owners of the Redmi Note 4X face the need to replace — but how much does it cost and where is better to do it?

Before you run to the service, check the actual status of the battery.

• 📱 Install the AccuBattery app (available on Google Play) and analyze battery health data.
• 🔋 Enter the code ##4636### in the phone number, go to the Battery Information menu and compare the current capacity with the nominal capacity (3860 mAh for the original battery).
• ⚡ If the capacity has fallen below 2500-3,000 mAh, replacement is inevitable – further operation can lead to bloating of the battery and damage to the motherboard.

Cost of battery replacement in service centers (2026)

The price of battery replacement in the Redmi Note 4X varies depending on the type of battery, region and status of the service center. The official Mi Service (if they still serve this model) will cost more, but you will get a warranty for work and the original battery. Informal workshops offer lower prices, but the risk of running into a fake or poor-quality repair increases.

Below is the current price table for Russia for June 2026 (includes the cost of work and battery):

In Moscow and St. Petersburg, prices are 10-15% higher than in the regions, for example, at the FixPrice Service Center, a replacement will cost a lot of money. ~3 000 ₽ 6 months warranty, and in small towns you can find workshops with a price tag of 2,200 ₽. It is important to specify whether the price is included in the diagnosis (sometimes it is put in a separate line for 300-500). ₽).

⚠️ Some services may offer “ultra-budget” batteries for 800-1000 ₽. These are usually low-quality fakes with a capacity of 2000-2500 mAh, which will last no more than a year. ₽ for analogue and from 2,500 ₽ original.

Previous Previous post: What to Choose for Redmi Note 4X

The main question when replacing is which battery to install. Original batteries from Xiaomi are more expensive, but guarantee compatibility and long life. Analogues are cheaper, but their quality varies greatly.

• ✅ Original battery:
• ❌ Cons: price from 2,500 ₽, It is hard to find in small towns.
• ✅ Premium analogues (ZOP Power, Baseus, Remax):
• ❌ Cons: Possible problems with charge calibration, less cycle life.
• ❌ Low-quality fakes (no-name):

If you have a budget, you can choose a premium analogue from a well-known brand (e.g., ZOP Power), which is often superior in capacity and equipped with overheating protection.

• 📦 Presence of hologram and factory packaging.
• 📄 Certificate of Conformity (can be requested from the seller).
• 🌡️ Temperature sensor (must be included).

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Before buying a battery, check it for authenticity with the Xiaomi Authenticity Check app (scan it). QR-Counterfeiting often fails to be verified.

Self-replacement: step-by-step instructions and risks

Replace the battery in the Redmi Note 4X You can do it yourself if you have experience in disassembling smartphones and the tools you need, and that saves you up to 1,500 dollars. ₽ at work of the master, but requires care: damage to plumes or motherboard can turn into expensive repairs.

The work will require:

• 🔧 Set of screwdrivers (cross-haul) PH00, flat-scapula).
• 🔥 Hair dryer or thermo-air station (for softening glue).
• 🧲 Screen suction cup.
• 🔋 New battery with adhesive base.
• 🛠️ Alcohol or isopropyl alcohol for cleaning contacts.

Turn off your smartphone and remove it. SIM-map|Discharge the battery to 20-30% (minimizes the risk of fire)|Prepare a workplace with good lighting|Make a backup copy of the data (in case of emergency situations)|Wear an antistatic bracelet (optional but recommended)-->

Step-by-step process:

1. Heat the back cover with a hair dryer (a temperature of ~60°C) for 2-3 minutes to soften the glue.
2. Put a plastic blade on the lid, starting at the bottom edge (where the charging connector is), and be careful, the fingerprint scanner plume is glued to the lid!
3. Unscrew 10 screws that fix the metal plate over the battery (use a magnetic screwdriver to avoid losing the screws).
4. Disconnect the battery plume from the motherboard, and gently attach the connector to the plastic blade.
5. Put a plastic card on the battery, and then you put the isopropyl alcohol under it to dissolve the glue. Don't use metal tools, you're at risk of puncture.
6. Install a new battery, plug in the plume and assemble the phone in reverse order.

⚠️ Warning: If the smartphone does not turn on after replacement or the battery does not charge, check: Density of the connections of the plume (sometimes light pressing helps). Integrity of the adhesive base (the battery should not "walk" inside the housing). Correct connection of all the plumes (especially the display and power buttons).If the problem persists, contact the service - it may be damaged motherboard.

Where to buy a battery for Redmi Note 4X: checked stores

When buying a battery, it is important to avoid counterfeits that not only fail quickly, but can also damage your smartphone.We recommend the following proven sites (for June 2026):

When buying on AliExpress, pay attention to the seller’s rating (not lower than 98%) and the number of orders (from 100)+). Best analog brands for Redmi Note 4X:

• 🔋 ZOP Power - capacity of 4000 mAh, protection against overheating.
• 🔋 Baseus – budget option with good reviews.
• 🔋 Remax – premium segment, 12-month warranty.

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Before buying, check with the seller whether the battery is suitable for the model Redmi Note 4X (mido).

How to prolong the life of a new battery: 7 rules

Even the best battery will not last long if you do not follow the rules of operation, following these recommendations, you will extend the life of the battery by 20-30%:

• 🔌 Avoid full discharge and 100% charge. Optimal range is 20-80%. Use apps like AccuBattery to control your battery.
• 🌡️ Do not overheat your smartphone. Do not leave it in the sun or near heat sources (e.g., on a torpedo in a car).
• ⚡ Use original or certified RAM. Fast charging higher power 10W precipitate.
• 📵 Disable unnecessary functions. GPS, Bluetooth and mobile data in the background consume charge.
• 🔄 Calibrate the battery every 3 months. Completely discharge the smartphone, then charge to 100% without interruptions.
• 🛌 Don't leave your phone charging overnight. Modern smartphones turn off power at 100 percent, but a constant network connection reduces resource.
• 🔋 Store your smartphone with 40-50% charge. If you don't use your phone for a long time (for example, it's in reserve), once a month, bring the charge to 50 times a month%.

If you play heavy games or watch videos often, consider buying a powerbank with passive cooling, which will reduce battery load and prevent overheating.

Frequent battery replacement errors and how to avoid them

Even experienced users sometimes make mistakes that lead to a smartphone breakage or a new battery wears out quickly.

• 🛠️ Using metal tools to remove the battery, which can puncture the battery and cause a short circuit, use only plastic blades or special devices.
• 🔌 If the phone doesn't turn on after you've changed, check if the battery connector is tight. Sometimes, a light tap on the train helps.
• 🧹 Residues of old glue under the new battery, which can lead to poor contact or overheating, clean the case with isopropyl alcohol and remove any traces of glue.
• 🔋 Buying a battery without a thermal sensor. Without a sensor, the battery temperature is not controlled, which increases the risk of bloating.
• 📱 Not observing polarity when connected "+" And the "-" contacts can disable the power controller.

⚠️ Warning: If the battery runs out too quickly after replacement (e.g., 1% per minute in standby mode), it is most likely not the battery that is the problem, but the power controller on the motherboard.

FAQ: Answers to Frequent Questions