Xiaomi Redmi 4X is one of the most popular budget smartphones of the brand, released in 2017. Despite its age, the device is still actively used due to reliable “stuffing” and the ability to install custom firmware. However, over the years, many owners have wondered: what charge to choose for the Redmi 4X, if the original lost or failed?
In this article, we will discuss the specifications of chargers compatible with Redmi 4X, explain the differences between original and third-party adapters, and give recommendations on safety, paying special attention to hidden parameters that manufacturers often do not specify on the package, but which critically affect battery life.
Spoiler: Not all charges with the right Micro-USB connector are equally useful. Wrong choices can lead to slow charging, overheating, or even battery damage. Next, a detailed parsing.
Charging specifications for Xiaomi Redmi 4X
The original charger, which came with the Redmi 4X, has the following options:
- 🔌 Type of connector: Micro-USB (not Type-C!)
- ⚡ Power output: 5V/2A (10 Watt)
- 📏 Adapter sizes: compact, without removable cable
- 🔋 Support for protocols: standard USB 2.0 without fast charging (Quick Charge not supported!)
Important: The Redmi 4X doesn’t have a fast-charging controller, so using 18W or 30W adapters won’t give you any speed gain, and it can overload your smartphone’s power circuits if you don’t have the right current-limiting circuitry.
The table below compares the key parameters of the original charging and popular analogues:
| Parameter | Original charging Xiaomi | Third-party adapter 5V/2A | Charging 5V/1A (slow) | Charge 9V/2A (Quick Charge) |
|---|---|---|---|---|
| Charging speed | ~2.5 hours to 100% | ~2.5-3 hours | ~4-5 hours | ~2.5 hours (but it is possible to overheat!) |
| Compatibility | 100% | 90% (depending on quality) | 100% (but very slowly) | 50% (risk of battery damage) |
| Price (2026) | ~800–1200 ₽ (new) | ~300–600 ₽ | ~200–400 ₽ | ~1000–1500 ₽ |
⚠️ Note: If you see Quick Charge 3.0 or Power Delivery on your adapter, it does NOT mean it is suitable for Redmi. 4X. The smartphone simply will not be able to use increased power, and in some cases this will lead to accelerated wear of the battery due to unstable voltage.
Original charging vs. analogues: which is better?
Xiaomi’s original accessories are traditionally considered benchmarks of quality, but their price is often overpriced.
- ✅ Pros of the original: 🛡️ Guaranteed compatibility with smartphone firmware (no problems with determining the type of charging). 🔥 Optimized temperature control (less risk of overheating). ⚡ Stable voltage without jumps.
- ❌ Cons of the original: 💰 High price (in 2-3 times more expensive than analogues). 🔌 Non-removable cable (when the cliff will have to buy a new adapter).
Third-party adapters can be no worse if you choose proven brands:
- 🔹 Baseus (Gallium Nitride series) - compact and reliable).
- 🔹 Anker (PowerPort line with overload protection).
- 🔹 Ugreen (budget, but with good reviews).
How do you tell a quality analog from a fake?
- Adapter weight (too light = cheap parts inside)
- Inscriptions on the body (should be clear, without spelling errors).
- Certificates (CE, RoHS, UL)
⚠️ Caution: Cheap charging without certification can damage the smartphone's power controller.Symptoms: the phone doesn't turn on from charging, but runs from a battery. USB-In this case, the motherboard will need repair (cost) ~2000–3000 ₽).
Can I use charging from other smartphones?
Yes, but with reservations. Redmi 4X is compatible with any USB 2.0 charging standard with a 5V/2A output.
- 📱 Charging from: 🔹 Redmi 3/3S/4/4A — Compatible (similar characteristics). 🔹 Samsung Galaxy (models up to) 2018 years, if the exit is appropriate 5V/2A. 🔹 iPhone (5W) — will charge very slowly (~5–6 hourly 100%).
- ❌ Not recommended: 🔹 Charging from POCO X3, Redmi Note 8 Pro and newer (have Quick Charge). 🔹 Output adapters 9V/12V (even if there is support 5V).
Why not use powerful charging? In the Redmi 4X installed power controller MT6737T, which is not designed to be a current above 2A. When connected to charging 18W or 30W smartphone will still consume only 10W, but:
- 🔥 Increased heating of the adapter and cable.
- 🔋 The battery wears out faster due to unstable current.
- ⚡ Risk of voltage surges with poor adapter quality.
☑️ Checking the compatibility of charging
How to extend the life of the battery when charging?
Redmi 4X is equipped with a lithium-ion battery capacity of 4100 mAh. If you do not charge it correctly, its life is reduced after 1-2 years.
- 🔋 Optimal charge level: keep the battery in the range of 20-80%. Full discharge and charge up to 100% accelerate degradation.
- 🌡️ Temperature: Do not charge at temperatures below 0°C or higher than 40°C.
- 🔌 Cable: Use only high-quality cables with thick veins (at least 24 cross-sections) AWG).
- ⏱️ Time: Do not leave your phone on charge overnight (after 100% microcharging begins, harmful to the battery).
Myths about charging, which you should not believe:
- ❌ «You need to completely discharge the phone once a month" - this was true for nickel batteries, but not for lithium-ion batteries.
- ❌ «Charging from the computer spoils the battery – not if the port gives 5V/0.5A more.
- ❌ «Fast charging kills battery – Redmi 4X It just doesn’t exist, so the question is irrelevant.
💡
If your phone is running out quickly, check the battery status through the engineering menu, and enter the phone app code ##4636##, then select Battery Information, and a health value below 80% indicates you need to replace it.
What to do if the phone is not charging?
If the Redmi 4X does not respond to the charging connection, perform the diagnostics by the following steps:
- Check the cable and adapter: 🔌 Connect another device to this charger. 📱 Try charging the Redmi. 4X from another adapter.
- Clean the Micro-USB connector: 🧹 Carefully remove dust with a toothpick (not a metal object!). 💧 Wash with alcohol (at least 70%).
- Reboot the phone: 🔄 Sometimes a forced reset helps (Power) + Vol Up for 10 seconds).
Check the port on your phone:
- 🔍 Connect your phone to your computer – if it is detected, the problem is charging.
- 🛠️ If not, the contact on the motherboard may have left (repair is required).
Common causes of malfunction:
- 🔌 Damaged cable (most often broken at the base of the connector).
- 🔥 Burned power controller (symptom: the phone is switched on only from the USB-port).
- 🔋 Bloated battery (seen by deformation of back cover).
⚠️ Warning: If the phone gets too hot when charging and the battery doesn't charge, turn it off immediately.This could be a sign of a short circuit in the battery or power controller!
How to check the power controller without disassembly?
Where to buy a charger for Xiaomi Redmi 4X in 2026?
Original and high-quality analogues can be found in the following places:
- 🛒 Official shops: 🔹 Mi Store (original accessories). 🔹 Xiaomi Shop (Russia).
- 🌍 Marketplaces: 🔹 Wildberries (look for sellers with a rating above 4.8). 🔹 Ozon (check out reviews for compatibility with Redmi) 4X). 🔹 AliExpress (only from trusted vendors, for example, Xiaomi Official Store).
- 🏬 Offline stores: 🔹 «The Svyazny, M. Video (sometimes available). 🔹 Lots with accessories (risk of running into a fake!).
Buying tips:
- 🔍 Before buying, check the photos of the adapter – the original should be a hologram Xiaomi.
- 📦 Included with the original charging is a white cable with the Mi logo.
- 💳 Payment through secure systems (for example, Payment upon receipt of the WB) help avoid deception.
Pricing for Xiaomi’s original charging for the Redmi 4X in 2026:
- 🔌 New: 800-1200 ₽.
- 🔄 B/u (good condition): 300-500 ₽.
- 🔋 Quality analogue: 400-700 ₽.
💡
Don't buy chargers labeled "For Xiaomi" or "Compatible with" - these are most often fakes. The original always carries the MDY-08-EM or MDY-08-EQ marking on the adapter.