The Xiaomi Redmi Note 7, released in 2019, is still a popular smartphone due to its price-performance balance. But over the years, many users have wondered what kind of charge to use if the original one is lost or failed? The answer is not as obvious as it seems - an inappropriate adapter can not only slow down charging, but also damage the battery.
In this article, we will discuss the technical requirements for the chargers for the Redmi Note 7, compare the original and third-party options, and give recommendations on safety.
Charging specifications for Redmi Note 7
Xiaomi Redmi Note 7 is equipped with a battery capacity of 4000 mAh and supports Quick Charge 4.0 technology (backward compatibility with QC 3.0).
- 🔌 Connector: USB Type-C (not Micro-USB as in older Redmi models!).
- ⚡ Maximum power: 18 Watt (9V/2A or 12V/1.5A) — This is the type of adapter that came with it.
- 📱 Supports Quick Charge 4.0, but it works with the QC 3.0, PD (Power Delivery up to 18W.
- ⚠️ Limitation: When using charging power of more than 20 watts, the smartphone will automatically limit consumption to 18 watts.
Important: Redmi Note 7 does NOT support charging with a power of 27 W, 30 W or 33 W — such adapters will not give a boost in speed, but can overheat the power controller. the original power supply from Xiaomi is marked MDY-08-EQ (18 W) is the best option.
| Parameter | Original charging | Compatible analogues |
|---|---|---|
| Max. Power. | 18 W (9V/2A) | 18–20 W (with QC 3.0/4.0 or PD support) |
| Connector. | USB Type-C | USB Type-C (required!) |
| Protocols | Quick Charge 4.0, QC 3.0 | QC 3.0/4.0, PD, AFC (partially) |
| Charging time 0-100% | ~2 hours | 2–2.5 hours (depending on cable) |
If you lose the original charge, do not rush to buy the first one you find. For example, the power supply from the Redmi Note 8 (18 watts) will do, but the charging from the POCO X3 (33 watts) will work in reduced power mode.
Original vs Third-Party Charging: Which to Choose?
Xiaomi’s original adapter guarantees stable performance, but it’s not always easy to find, especially in 2026.Third-party charging can be just as good as it is if it meets key requirements:
- ✅ Certification: Look for marking CE, RoHS or UL case.
- ✅ Brands: Anker, Baseus, Ugreen, Belkin - proven manufacturers.
- ❌ Fakes: Avoid “no-name” charges with AliExpress without reviews – they often don’t match the declared power.
Advantages of original charging:
- 🔋 Optimized for the Redmi Note 7 power controller (less battery heat).
- ⚡ Stable charging speed without “dumping".
- 🛡️ Safety guarantee (protection against overheating, short circuit).
When you can use third-party charging:
- 💡 If you support Quick Charge 3.0/4.0 or Power Delivery.
- 🔌 If the plug USB Type-C (not Micro-USB!).
- 📊 If the power does not exceed 20 watts (more is meaningless).
⚠️ Attention: Charging with USB-A (The old connector will be slower even at the same power, because of protocol limitations. → Type-C cable.
Power 18–20 Watt|Connector. USB Type-C|Support QC 3.0/4.0 or PD|Security certificates (CE/UL)|Current-supported cable 2And-->
Can I use charging from other smartphones?
Many users are trying to charge the Redmi Note 7 with power supplies from other devices.
| Smartphone model | Charging power | Compatible with Redmi Note 7 | Notes |
|---|---|---|---|
| Redmi Note 8/9 | 18 W. | ✅ Complete. | The best option is if the original is lost. |
| POCO X3/X3 Pro | 33 Watts | ⚠️ Partial | It will run at 18 watts, but overheating is possible. |
| Samsung Galaxy A52 | 25 W. | ✅ Yes (with Type-C cable) | Uses PD, speed ~18 watts. |
| iPhone 12/13 | 20 W. | ✅ Yes. | Type-C cable required → Type-C. |
| Old Redmi (Note 5/6) | 10-15 W. | ❌ Slow charging. | They don't support QC 4.0. |
If you are charging from another device, pay attention to two points:
- Cable: Even if the power supply is powerful, the old USB-A → Type-C cable can choke current up to 1.5A.
- Protocol: Charges from Samsung (with AFC) or Huawei (with SCP) will run slower than Quick Charge.
⚠️ Warning: The Redmi Note 7 Pro (Indian version) has a different power controller! its power supply (18W) is externally identical, but may not work smoothly with the regular Note 7.
What happens if you use a 65 watt charger?
How to check that the charging is working correctly?
Poor or inappropriate charging can not only slowly charge your smartphone, but also damage the battery.
- 🔋 Charging time: 0 to 100% should go ~2 hours (at 18 watts). If longer, the problem is in the block or cable.
- 🌡️ Heating: Light heat is the norm, but if charging or smartphone is hot, it's a worrying sign.
- ⚡ Indication: The lock screen should display the inscription "Quick Charging" (if not, the protocol is not activated).
How do you measure the actual power?
Download the AccuBattery (Android) or Ampere app, and they'll show the current and voltage in real time. The Redmi Note 7's normal values are:
- 📊 Current: 1.5–2A at 9V (18 W).
- 📉 Voltage: 8.8–9.2V (at QC 4.0).
If the application shows a current of less than 1A or a voltage of 5V, then:
- ❌ The cable does not support fast charging.
- ❌ Charging is not compatible with Quick Charge.
- ❌ Connector contaminated or damaged.
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If the smartphone charges only at a certain position of the cable, the problem is the Type-C connector – it needs to be cleaned or replaced.
Top.-5 Charging for Xiaomi Redmi Note 7 into 2026 year
If the original adapter is lost, here are proven alternatives (prices are up to mid-2026):
- Xiaomi Original 18W (MDY-08-EQ) 💰 ~1 200 rubles. | ✅ Full compatibility, optimal choice.
- Anker PowerPort III Nano (20W, PD) 💰 ~1 500 rubles. | ✅ Compact, supportive PD and QC 3.0.
- Baseus 18W (GaN, QC 4.0) 💰 ~900 rubles. | ✅ Lightweight, with GaN technology (less warms up).
- Ugreen 20W (PD + QC) 💰 ~1 100 rubles. | ✅ Universal, suitable for other devices.
- Belkin BoostCharge 18W 💰 ~1 800 rubles. | ✅ Premium quality, long service life.
What to look for when buying:
- 🛒 Shop: Buy in official retailers (Svyaznoy, M. Video, Wildberries with verified sellers).
- 📦 Some charging units are sold without cable – it will have to be purchased separately.
- 🔍 Look for mentions of the Redmi Note 7 – some models may not work well.
⚠️ Note: Charges with AliExpress for 300-500 rubles. often have overrated characteristics. For example, the block on "30 W" in fact gives 10-12 W. Check the reviews from the photo tests!
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The best choice is the original charging Xiaomi 18W or certified analogues from Anker/Baseus with support for QC 4.0 or PD.
Frequent errors when charging Redmi Note 7
Many users are unconsciously shortening battery life, and here are the most common mistakes:
- 🔥 Using a smartphone while charging (especially gaming/video) – increases battery heat.
- 🌙 Charging for the whole night - after 100%, the smartphone periodically "powers up", which wears out the battery.
- 🔌 Cheap cables can not only slow down charging, but also damage the controller.
- ☀️ Charging in the sun or in the car in summer - overheating above 40°C critical for lithium-ion batteries.
How to extend the life of the battery:
- 🔋 Keep the charge in the range of 20-80% (use AccuBattery for reminders).
- ❄️ Avoid extreme temperatures (optimum: 10-35)°C).
- ⚡ Every 3 months, perform a full discharge-charging cycle (0–100%) for calibration.
If the battery starts to run down quickly (less than 4-5 hours), check its condition in Settings → Battery condition. The value of "good" means wear less than 20%, "replace" - more than 50%.
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Turn off the Optimized Charging feature in your settings if you want your smartphone to charge faster, but remember, this will shorten battery life.