Xiaomi Redmi Note 7, released 2019 It is still a popular smartphone due to its balanced characteristics and affordable price. 4-5 In the years of operation, even the most reliable battery begins to lose capacity: the phone discharges in half a day, turns off when the battery is used. 20-30% If you're facing these problems, it's time to think about replacing the battery.
In this article, we will look at how much the battery costs on the Redmi Note 7 in 2026, where to buy it (in a service center, on marketplaces or from private sellers), how to distinguish the original from a fake and what to look for when choosing, and how much it will cost to replace the battery in the workshop and whether you can manage yourself.
Original battery vs analogues: what is the difference and what to choose
The first thing a Redmi Note 7 owner faces when looking for a new battery is choosing between the original Xiaomi battery and third-party battery, the difference between the two not only in price, but also in quality, life and safety.
Original battery (article) MB-J10 or MB-J10B) Has a capacity of 4000 mAh and is manufactured to order Xiaomi in factories ATL (Amperex Technology Limited) or Sunwoda:
- 🔋 Accurate compliance with the technical characteristics of the smartphone.
- 🛡️ Safety guarantee: Original batteries undergo multiple overheating and short circuit tests.
- ⏳ Longer holds charge (when properly operated — 2-3 year without appreciable degradation).
However, the original has disadvantages: high price (from 2,500 to 4000 rubles depending on the seller) and the risk of running into a fake, as the market is full of counterfeit batteries with a sticker "Original".
Analog batteries are cheaper (from 800 to 1,800 rubles), but their quality varies from "acceptable" to "dangerous".
- 🔹 Baseus – offers batteries with capacity 4200 mAh 5-10% more than the original).
- 🔹 Remax - budget option with a guarantee of 6 months.
- 🔹 Patona is a German brand specializing in smartphone batteries.
⚠️ Attention: Cheap batteries without brand name (price below) 700 RUB often has a real capacity for 30-40% Not only does this reduce the time of the phone, it also increases the risk of bloating or fire.
Current battery prices for Redmi Note 7 in 2026
Battery prices for Xiaomi Redmi Note 7 vary by type (original/analogue), seller and region. Below is a table with current offers for June 2026. note that prices may change due to the dollar or shares of sellers.
| Type of battery | Brand/model/model/model/model/ | Capacity | Price (rupe) | Where to buy |
|---|---|---|---|---|
| Original. | Xiaomi MB-J10 (ATL) | 4,000 mAh | 2 800 – 3 500 | Official service centers, AliExpress (verified sellers) |
| Original. | Xiaomi MB-J10B (Sunwoda) | 4,000 mAh | 2 500 – 3 200 | Wildberries, Ozon, certified workshops |
| Premium analogue | Baseus Power Bank Inside | 4200mAh | 1 500 – 1 900 | AliExpress, Yandex Market |
| Budgetary analogue | Remax RNB-7 | 4,000 mAh | 900 – 1 300 | Wildberries, local accessories stores |
| Analogue of economy | No Brand (China) | 3,500 to 4,000 mAh | 600 – 900 | AliExpress, markets, private sellers |
* The actual capacity of unbranded batteries is often underestimated, for example, the claimed 4,000 mAh may be 2,800-3,200 mAh.
The cost of replacing the battery in the service center varies from 800 to 1,500 rubles (depending on the region), some workshops offer free installation when buying a battery from them. Self-replacement will cost less, but requires skills with small parts and a special tool (suction cup, mediator, hair dryer).
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Check the reviews of the seller on the marketplace before you buy, and pay attention to photos of real customers, because fakes often show poor stickers or connector mismatch.
Where to buy a battery for Redmi Note 7: the pros and cons of each option
The choice of the place of purchase is as important as the choice of the battery itself, and let’s look at the main options, their advantages and pitfalls.
1. Official Xiaomi Service Centers
Pros:
- 🔹 100% original battery with warranty (usually 6-12 months).
- 🔹 Professional replacement with phone check for other malfunctions.
- 🔹 Diagnostics before purchase (sometimes free).
Cons:
- 💸 The highest price (from 3 000 rubles per battery) + job).
- ⏳ Long wait (in some cities, queue for 1-2 weeks).
2 Marketplaces (Wildberries, Ozon, AliExpress)
Pros:
- 💰 Wide price range (you can find both the original and budget analogues).
- 📦 Quick delivery (1–3 day-to-day Wildberries/Ozon).
- 🔄 The possibility of returning the goods within 14-30 days.
Cons:
- 🎭 High risk of getting faked (especially on AliExpress).
- 📦 You need to check compatibility yourself (some sellers indicate the wrong article).
3. Local shops and workshops
Pros:
- 🏠 You can touch the product before buying.
- 🔧 Often offer a "gift" installation".
- 💬 It is easier to negotiate a guarantee or refund.
Cons:
- 🏷️ Prices may be overpriced (due to the cost of intermediaries).
- 🔋 Limited range (not always originals).
4. Private sellers (Avito, Yula, groups in social networks)
The riskiest option, plus only one, you can sometimes find a used battery for 1,000-1,500 rubles.
- 🚫 There is no guarantee (even if the seller promises to do so).
- 🔋 High probability of buying a battery with wear and tear (for example, taken from another phone).
- 📉 It is impossible to check the real container without special equipment.
⚠️ Note: If the seller on Avito offers "original battery for 1,200 rubles", most likely, it is a fake or used battery with wear of 30-50%. Original spare parts cheaper than 2,500 rubles retail are not sold.
How to distinguish the original battery from a fake: 5 key signs
The fake batteries for the Redmi Note 7 are almost indistinguishable from the original ones, but there are a few details to look out for.
1. Packaging and stickers
The original Xiaomi battery comes in a white box with the brand logo or in an antistatic package with a hologram.
- 🏷️ Clear sticker with the article (MB-J10 or MB-J10B).
- 🔢 Serial number (can be checked on Xiaomi website).
- 📏 QR-code leading to the official product page.
Print quality
Fakes are often found in:
- 🖨️ Blurred or curved inscriptions.
- 🎨 Color mismatch (for example, gray text instead of black).
- 📐 Misplacement of Xiaomi logo.
3. Weight and dimensions
The original battery weighs ~45 gramme 154.5 × 73.5 × 3.8 Counterfeiting is often lighter (due to lower capacity) or thicker (due to poor-quality assembly).
4.Contacts and connectors
The original has contacts:
- 🔌 Perfectly smooth, no barbs.
- 🟡 Golden color (fakes are often silvery or dull).
- 🔋 The connector for connecting to the phone board fits tightly.
5. Verification through the annex
After installing the battery, check its real capacity using the following applications:
- 📱 AccuBattery (shows wear and real capacity).
- 🔋 AIDA64 (displays battery data in the "Power" section").
How to check the serial number of the original battery?
Cost of battery replacement in service center vs self-repair
If you're not sure about your skills, you'd better trust a professional battery replacement, but the prices at service centers can be very different. Let's look at both.
1. Replacement at the service centre
The cost of work depends on the level of the workshop:
- 🏢 Official Xiaomi service: 1,200-1,800 rubles (with a guarantee of 6-12 months).
- 🔧 Local workshops: 600-1 200 rubles (guarantee 1-3 months).
- 🛠️ Private masters: 400-800 rubles (guarantees may not be available).
Some services offer a “comprehensive service” for 2,500-3,000 rubles, which includes battery replacement, plug cleaning and board diagnostics, which is advantageous if the phone is already “glutching” or charging for a long time.
2. Self-substitution
If you want to change the battery yourself, you will need to:
- 🛒 New battery (800-3500 rubles).
- 🔧 Toolkit: plastic mediator, sucker, screwdriver T3 and T5, hair dryer (to soften glue).
- 📹 Video Instructions (Recommended by Repair Universe on YouTube).
Step-by-step:
Turn off the phone and remove it. SIM-map|Heat the back cover with a hair dryer (temperature 60–70)°C)|Carefully tuck the cover with the mediator, starting at the bottom edge|Unscrew 12 screws on the inner panel|Disconnect the battery plume and remove it carefully.|Install a new battery and assemble the phone in reverse order.-->
⚠️ Important: It's easy to damage the plumes or tear off contacts when you replace them yourself. If you've never taken your smartphones apart, you'd better not risk it.
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Even if you are confident in your abilities, make a backup before disassembling the phone. If you make a mistake during repairs, the phone may stop turning on and you will lose all files.
Frequent mistakes when buying and replacing a battery
Many Redmi Note 7 owners have experienced battery replacement problems due to errors, and these are the most common:
1. Buying the wrong battery capacity
Some vendors offer 4,500mAh or 5,000mAh batteries, claiming they are "improved."
- 🔋 These batteries often have a real capacity of 3,500-4000 mAh.
- 🔥 Increased capacity can lead to overheating or bloating.
- ⚠️ Smartphone may incorrectly display the percentage of charge.
Ignoring calibration after replacement
After installing a new battery, it must be calibrated:
- 🔌 Charge your phone to 100% and keep charging for another 1-2 hours.
- 📵 Discharge until automatically switched off.
- 🔄 Repeat the cycle 2-3 times.
If you don’t, the phone may show an incorrect percentage of charge (for example, jumping sharply from 50% to 20%).
3. Use of a non-original charger
After replacing the battery, many continue to use cheap charging, which leads to:
- ⚡ Slow charging (or lack thereof).
- 🔥 Battery overheating.
- 📉 Rapid degradation of the new battery.
We recommend using the original Xiaomi ZU (5V/2A or 9V/2A) Certified analogues (Baseus, Anker).
4. Failure to check the battery before buying
Even if the seller claims that the battery is new, check:
- 📅 Production date (original batteries on the sticker) Lithium battery life is 2 years, and if the battery is larger, the battery capacity is reduced.
- 🔋 Voltage (must be 3.7–3.85V new battery).