Owners of the popular Xiaomi Redmi Note 8 Pro smartphone often face natural wear and tear of the power source, especially given the high performance of the device and the frequent use of energy-intensive applications. Battery life is a critical parameter, and when the phone starts to run out in half a day or suddenly turn off at 20% charge, the question of replacing the battery is raised, the cost of this procedure varies widely and depends on many factors that must be considered before going to the service.
The price is not only the cost of the battery itself, but also the complexity of the dismantling, as the design of the Redmi Note 8 Pro involves the use of adhesive joints and a glass back cover, which increases the risk of damage to the case if you sloppy opening. In this article, we will discuss in detail the pricing in the market, compare the original components with analogues and explain why a cheap replacement can cost more in the long run.
It’s important to understand that Xiaomi uses a variety of Quick Charge 4.0 and Power Delivery fast charging technologies that require quality power controllers inside the battery. Cheap copies often don’t support these protocols correctly, leading to overheating and further degradation of the motherboard.
Factors affecting the total cost of replacement
The first thing that determines the price on the service center's check is the origin of the battery. The market is saturated with offers where the cost can vary by two or three times. BM4C and are much more expensive, as they pass strict quality control and provide the stated 4500 mAh capacity. At the same time, budget counterparts often have real capacity. 3000-3500 mAh, although the sticker will indicate the standard value.
The second important aspect is the complexity of the work: Replacing the Redmi Note 8 Pro is more difficult than many other smartphones because of the design of the case, the wizard needs to carefully heat and remove the rear window without damaging it, and disconnect the plume of the fingerprint scanner, which often comes with a lid, Any careless movement can lead to cracks or rupture of the plume, which automatically increases the cost of repair.
The third factor is the status of the service center: authorized Xiaomi centers use only certified parts and give an official guarantee, but their rates are higher. Private workshops can offer a lower price by using refurbished or used batteries recovered from other devices, but in this case you risk getting a device with unstable operation of the charge controller.
Geographical factors are also important: in large metropolitan areas, rent and salaries are higher, which translates into the final cost of service for the client. In smaller cities, the price may be lower, but the choice of quality components is often limited.
Comparative table of prices for batteries and work
To help you navigate your budgets, we have compiled a table with approximate prices relevant for the current period. Please note that prices are quoted in rubles and may vary depending on the region and the particular retail outlet.
| Component type | Cost of battery (ruble) | Cost of work (ruble) | Total amount (ruble) |
|---|---|---|---|
| Original Xiaomi (New) | 1800 - 2500 | 1000 - 1500 | 2800 - 4000 |
| Quality analogue (OEM) | 900 - 1400 | 800 - 1200 | 1700 - 2600 |
| Refurbished (Refurbished) | 500 - 800 | 600 - 1000 | 1100 - 1800 |
| Premium copy (High Copy) | 1200 - 1600 | 800 - 1200 | 2000 - 2800 |
As you can see from the table, the difference between the cheapest and the most expensive option can be as high as three times. However, refurbished batteries often have a bloated body or altered chemical structure, which makes their use potentially dangerous. Saving 1,000 rubles can lead to battery bloating and damage to the display or touchscreen after a couple of months of operation.
The cost of the work is also not taken from the ceiling, and the price includes consumables: a special glue B-7000 or T-7000, new moisture pads and tools for safe opening. Cheap replacement often means that the master will save on glue, and after a month the back cover will begin to peel off or dust will fill into the gaps.
Original vs. analogue: what can not be saved
Choosing between the original and the copy is always a balance between budget and expected life. The original battery for the Redmi Note 8 Pro has a chip that interacts correctly with the MIUI system. This allows you to display the real percentage of charge and adjust currents correctly when charging fast. If you buy a cheap counterpart, the system can show 100% charge, and after 10 minutes of operation the phone will suddenly turn off.
There are several categories of analogs. There are so-called "high copies" that are visually indistinguishable from the original and have good characteristics. But there is also a frank marriage, where instead of a lithium-polymer cell, there is an old technology with fewer recharge cycles. The difference in price here is due to the resource: the original lasts 2-3 years, good analogue 1 year, cheap 3-6 months.
- 🔋 Resource Capacity: Originals are retained to 80% post-container 500 cycles, analogues - after 200-300.
- 🌡️ Heat output: Cheap batteries warm up more when charging, which harms the processor and display.
- 📉 Degradation: Analogues lose their ability to hold load faster, the phone begins to “brake” when the charge is low.
It is important to consider that Xiaomi does not sell batteries separately in retail packaging for users, as some brands do. Anything sold in boxes on marketplaces labeled "Original" is most likely a quality copy or a restored item.The real original can only be obtained from an authorized service or bought from a new phone (which is rare).
⚠️ Warning: If the battery replacement is being replaced by a wizard who tells you to "sweat the controller" from the old battery to the new one, refuse.
Technical nuances of replacement on Redmi Note 8 Pro
The battery replacement process on this model has its own characteristics that directly affect the price of work: the back of the smartphone is made of glass and glued around the perimeter. It requires heating to 80-90 degrees and using thin metal blades. An inexperienced craftsman can easily break the glass or damage the plume of the fingerprint scanner that runs under the lid.
Inside the case, the battery is also attached to a double-sided tape, which requires careful removal so as not to damage the display plumes and motherboard. In the Redmi Note 8 Pro, the battery connector is located at the bottom, but access to it is blocked by a metal protective plate that needs to be unscrewed.
Another nuance is calibration: Once the new battery is installed, it is recommended that you perform a calibration cycle: completely discharge the phone before turning off, then charge it to 100% when it is off, which will help the power controller correctly determine the real capacity of the new cell.
Some services offer water protection restoration services, and while it is not possible to restore the full IP53 factory level in a workshop, using quality sealants and gaskets will significantly improve spray and dust protection, especially for a glass-body model where gaps play a key role.
How to extend the life of a new battery
Once you've spent the money to replace it, you want the new battery to last as long as possible. Modern lithium polymer cells are sensitive to temperature and depth of discharge. Overheating is the main enemy of any battery, so try not to use heavy games while charging.
The optimal charge range for a long cell life is 20 to 80 percent. Constant charging to 100 percent and zero discharge accelerates the degradation of chemistry. MIUI has a charging optimization feature that you can activate in the settings. It learns your habits and delays charging the last 20 percent until you normally wake up.
- 🌡️ Avoid using your phone in the cold below -10 degree.
- 🔌 Use original cables and charging units with Quick Charge support.
- 📱 Don’t leave your phone on charge all night if there’s no optimization feature.
Also worth paying attention to background apps. Redmi Note 8 Pro has a powerful processor, and some applications may not work properly, causing constant heating and discharge. Regular cleaning of the cache and removing unused software will help reduce the load on the power system.
Where to change: service or on your own
Self-substitution is possible if you have experience with small electronics and the tools you need: hair dryers, suckers, screwdriver sets. However, the risk of damaging expensive components is high. The cost of a toolkit can be half the cost of working in a service, and the probability of error without experience is very high.
The service center takes responsibility. If something goes wrong in the replacement process, they have to fix it at their own expense. In addition, professionals have access to special glues and tools that are not available to the average user. If you replace yourself, you risk losing the leakiness and aesthetics of the device.
⚠️ Warning: When replacing yourself, be sure to turn off the battery plume before disconnecting the other plumes.Sparking can disable the power controller on the motherboard.
If you do decide to change it yourself, buy a battery with the glue layer installed already. This will make it easier to install. But remember, the warranty on the phone when you do it yourself burns out completely. For the Xiaomi Redmi Note 8 Pro, which is not new anymore, this may not be as critical, but the risk remains.