Owners of Xiaomi Redmi 6 often face the question: what is the optimal charging current (in amperes) for their device? The answer depends on several factors: the original charger, battery status and even ambient temperature. Many people mistakenly believe that the higher the amps, the faster the phone will charge - but this is not always the case.
Redmi 6
3,000 mAh
Quick Charge 3.0
1A-2A
It’s worth noting that Xiaomi’s original Redmi 6 power supply delivers 5V/2A (10W), but the phone’s charging controller automatically adjusts the current consumed depending on the battery temperature and charge level, which means that even if you plug in the RAM on 2.4A, the phone will take exactly as much as it thinks is safe.
Technical Charging Specifications of Xiaomi Redmi 6
To understand how many amperes it really takes to charge the Redmi 6, let’s analyze its technical parameters:
- 🔋 Battery capacity: 3000 mAh (typical), 2900 mAh (minimum)
- ⚡ Support for fast charging: Quick Charge 3.0 (partially up to 10W)
- 🔌 Original Zoo: 5V/2And (10W), model MDY-08-EQ
- 📱 Maximum incoming current: up to 2A (limited by controller)
The power controller in Redmi 6 is designed to prevent the battery from overheating. If you use a charger with a current greater than 2A, the phone simply won't consume any extra amperes. However, that doesn't mean you can use any RAM without consequences. For example, cheap Chinese 3A-4A power supplies can give off unstable voltages that will damage the battery over time.
It is important to understand the difference between rated current (as indicated on the power supply) and actual consumption (as determined by the phone). Even if you connect the Redmi 6 to a 5V/3A charge, it will take no more than 1.8-2A in the initial charging stages and reduce current to 0.5-1A when it reaches 80-90% charge.
What is dangerous too high charging current?
Using chargers with currents above 2.4A for the Redmi 6 can lead to several problems:
- 🔥 Battery overheating: Lithium-ion batteries are sensitive to high currents, especially at temperatures above 30°C. This accelerates the degradation of the capacitance.
- ⚡ Unstable voltage: Cheap RAMs can give off voltage surges, resulting in micro-damage to the power controller.
- 📉 Reduced battery life: Continuous charging above 2A reduces charging cycles by 15–20%.
It is especially dangerous to use fast charging from other brands (for example, Samsung Adaptive Fast Charging or Huawei SuperCharge), as they can produce 9V-12V voltage, which the Redmi 6 is not designed for.
⚠️ Warning: If the phone starts to heat up very much after the charger is connected (more than 40).°C, immediately disconnect it from the mains, which is a sign that the power supply is giving out incorrect current or voltage parameters.
To check the actual charging current, you can use apps like AccuBattery (available on Google Play), which shows not only the current current, but also the battery temperature, and also estimates battery wear.
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If you frequently charge your phone from a power bank, choose models that support Power Delivery (PD) and no more than 2A. This will extend the life of the Redmi 6 battery by 20-30%.
Original vs. Third-party charger: which is better?
The original charger from Xiaomi for Redmi 6 is marked MDY-08-EQ and gives stable 5V/2A.
- ✅ Optimized for the phone's power controller
- ✅ Protection against overheating and surges of tension
- ✅ Complies with safety standards CE ROHS
However, if the original RAM is lost, you can use analogues with the same parameters, the main thing is to avoid "no-name" charging without certification.
| Brand | Model Zoo | Parameters | Compatibility |
|---|---|---|---|
| Anker | PowerPort 1 (A2011) | 5B/2.4A | ✅ It's fine, but the current is limited to 2A. |
| Baseus | BS-AIC01 | 5B/2A | ✅ Full compatibility |
| Samsung | EP-TA20E | 5B/2A | ✅ Suitable (used in Galaxy) S7/S8) |
| Ugreen | CD209 | 5B/2.4A | ⚠️ Possible surges of current (it is better not to use constantly) |
If you choose wireless charging, note that Redmi 6 does not support it out of the box. You will need a special adapter with a Micro-USB connector, but the efficiency of such charging will be lower - the current will not exceed 1A, and the charging time will increase by 30-40%.
Check the markings (should be) 5V/2And)|Use branded charging (Anker, Baseus, Belkin)|Avoid CU with damaged cable|Do not charge your phone at a temperature higher 35°C|Give preference to certified products (CE, UL)-->
How to charge Xiaomi Redmi 6 to extend the battery life?
Even if you use the right charger, following a few rules will help keep your battery capacity for years to come:
- Avoid full discharge. The optimal charging range is 20-80%. Full discharge (0%) and overcharging (100%) reduce battery life.
- Do not charge in heat or cold. The ideal temperature is 10–30°C. At 0°C, the capacity temporarily drops, and at 40°C, degradation accelerates.
- Use the original cable. Cheap Micro-USB cables can have poor contact, causing current to drop and overheat.
- Turn off overnight fast charging. If your phone stays on charging for more than 8 hours, it’s best to use 1A RAM (like an old iPhone).
To monitor the status of the battery, we recommend using the Battery Guru app or the built-in statistics in Settings → Battery. If the capacity has fallen below 80% of the original (2400 mAh), you should think about replacing the battery.
⚠️ Warning: If after a year of use, the phone runs out in 3-4 hours with moderate use, this is a sign of critical battery wear, in which case even the right charging will not restore capacity - you need a replacement.
Fun fact: Xiaomi Redmi 6 features a Smart Charging feature that automatically shuts down power when it reaches 100% if the phone stays connected to the network. However, this feature doesn’t always work correctly, so it’s best not to leave the device on charge all night.
What to do if the phone is not charging?
Can I use charging from other Xiaomi models?
Many users are wondering whether you can charge the Redmi 6 power supplies from other Xiaomi smartphones, for example, from the Redmi Note 5 or Mi 9.
- 🔄 Charging from Redmi. 4/5/Note 4: It's perfect (5V/2And).
- ⚡ Charging from Mi. 8/9/10 (Quick Charge 4+): You can use it, but the phone will charge in mode. 5V/2A (fast charging is not activated).
- ❌ Charging from POCO F1 Black Shark: High voltage (9B-12V) and can damage the Redmi 6 power controller.
If you use a different model, keep track of the temperature of the phone for the first 10-15 minutes. If it heats up more than with the original RAM, it is better to return the native power supply.
Redmi 6 does not support reverse charging (OTG), so you can’t use it as a power bank for other devices.
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Xiaomi’s MDY-08-XX chargers (where XX is any symbol) are fully compatible with Redmi 6 and safe for long-term use.
How to check the actual charging current?
To find out how much amps your Redmi 6 actually consumes, there are several methods you can use:
- AccuBattery: Install from Google Play. Connect charging and open the Charging tab. The app will show the current current in milliamperes (e.g., 1800 mA = 1.8A).
USB-tester:
Devices like Xiaomi USB Tester or VC840 connect between the RAM and the cable, showing current, voltage and energy consumed, they cost inexpensively (about 500-1000 rubles), but give the most accurate data.
Hidden menu of engineering settings:
Type ##4636## in the dialer, then select Battery Information, which shows charging status, temperature and charge level, but not current.
If you see the charging current jumping continuously (e.g., 0.5A to 1.5A) during testing, this may indicate:
- Problems with cable (poor contact)
- Micro-USB connector malfunction.
- Failure of the power controller (diagnosis is required in the service center).