Xiaomi Redmi 5 Plus: what is charging, features and compatibility

Owners of the popular Xiaomi Redmi 5 Plus smartphone often face the question of which charger will be the most effective for their gadget. Despite the fact that the model was released a few years ago, it is still actively used due to its autonomy.

Many users mistakenly believe that any USB-The adapter will work equally well, but the specifications of the device dictate their conditions. In this article, we will discuss in detail what charging is required for the Redmi 5 Plus, whether it is possible to use more powerful units and how to avoid damaging the battery. Understanding these nuances will help to avoid buying incompatible accessories.

We will also discuss the topic of fast charging, as this aspect is often confusing, and you will learn whether this model supports Quick Charge technology, and whether it is worth overpaying for expensive original adapters, the information will be useful for those who have lost their power supply, and those who want to buy a second one for use in the office or car.

Technical characteristics of the battery and connector

At the heart of the Redmi 5 Plus, a 4,000mAh lithium polymer battery is a pretty impressive number that gives the device up to two days of moderate operation. However, it takes not only time but also the right current to fully charge such a capacity. The standard cable connector in this smartphone is the Micro-USB.

Importantly, unlike more modern models, it does not use a Type-C connector. This puts certain restrictions on the choice of cables and docking stations. The speed of power transfer through the Micro-USB port in budget and mid-budget devices of the time was often limited to the USB 2.0 standard.

⚠️ Note: Do not use cables with damaged insulation or oxidized contacts, as this may cause the Micro-USB port to overheat and unstable charge current.

The Micro-USB connector is a trapezoidal shape and requires a neat connection because it is not symmetrical. Frequent careless use can shatter the socket, leading to poor contact and increased resistance when charging. So the condition of the socket itself in the phone also plays a critical role in the battery recharge rate.

Support for fast charging technology

One of the most common questions concerns support for Quick Charge technology.The Redmi 5 Plus is based on the Snapdragon 625 processor, which, according to Qualcomm specifications, supports Quick Charge 3.0. However, the implementation of this feature depends on the manufacturer and the specific firmware modification.

In most cases, the Redmi 5 Plus is capable of receiving increased current, but the charging speed is limited by software and hardware for safety.The maximum input power the device can take is about 10 watts (5V/2A). Using an 18 watt or 24 watt power supply will not speed up the process, since the power controller inside the phone will take exactly as much as it needs.

• 🔋 Standard charging: 5V/1A (5W) – charges very long, over 4 hours.
• ⚡ Optimal charging: 5V / 2And (10 W) - standard mode, full time around 2.5-3 hours.
• 🚀 Fast charging: Support QC 3.0 Yes, but it works in a very gentle manner until 10-12 Watt.

It is also worth mentioning that using too powerful power supplies from flagship models (for example, 65 W or 120 W) is absolutely safe for the Redmi 5 Plus. Modern power controllers independently negotiate (agree) the current. The phone simply will not take more than it should, so you should not be afraid to "burn" the battery with a powerful unit.

Compatibility with power supply units of different power

Many users are wondering: what happens if you connect the Redmi 5 Plus to a power supply from a tablet or other smartphone with a current of 2.4A or 3A? As mentioned, the device itself adjusts the consumption. If you connect it to the adapter 2.1A, the phone will take its maximum (about 1.8-2.0A), which is the optimal scenario.

The reverse situation, when a weak power supply is used (for example, from an old 0.5A or 0.8A headset), will lead to extremely slow charging. In this case, if the screen is on and power-intensive applications are running, the battery may even run out despite being connected to the grid, this is due to the fact that the system consumption exceeds the energy supply.

So, "what kind of charging" is a matter of finding the middle ground. You don't need exotic solutions, a reasonably high-quality unit labeled Output: 5V 2A. This will provide a balance between speed and temperature.

The effect of cable on charging speed

Remember, the power supply is only half the equation. Micro-USB cables are just as important. Cheap cables often have thin veins and high internal resistance, which causes voltage to drop on the way to the phone, and as a result, even a powerful power supply can give off insufficient current.

For the Redmi 5 Plus, it is recommended to use cables no longer than 1 meter long with a high-quality shielding. If the cable is too long (2 meters or more), voltage losses can be significant, especially if the wire is not certified. Visually, such cables often look thick and dense to the touch.

• 🔌 Length: Optimum to 100 cm to minimize resistance.
• 🛡️ Material: The presence of ferrite filters (cylinders at the ends) improves signal quality and power supply.
• 💰 Price: Too cheap cables (up to 100 rubles) often do not withstand current 2A and warm up.

You can check the quality of the cable indirectly: if the screen reacts to late touches or "jumps" when connecting the phone to charging, then the cable creates severe interference or does not allow enough current to pass, in which case it is better to replace it.

Optimizing the charging process to extend battery life

For your Redmi 5 Plus battery to last, it's not just about "what charge" you use, but how you use it. Lithium polymer batteries don't like extreme states. Deep zero discharge or constant 100 percent charge-on-charge charge accelerates the degradation of the cell's chemistry.

Try to keep the charge in the range from 20% to 80%. This is a "comfort zone" for the battery. It is also critical to avoid overheating. Do not cover the phone with a blanket while charging or leave it in direct sunlight. High temperatures are the main enemy of the battery.

⚠️ Warning: Using your phone while charging (especially gaming or navigation) causes simultaneous heating from the processor and charging circuit, which can cause the battery to bloat.

If you charge your phone at night, modern Xiaomi controllers are able to stop the current after reaching 100%, but it is better not to leave the device on charging for days. MIUI Helps to extend battery life by learning your habits.

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Use flight mode while charging if you want to charge your phone as quickly as possible, which will turn off network search and background processes, reducing the power consumption of the device itself.

Charging problems and methods of their solution

Sometimes users are faced with a situation when the phone stops charging or is charged with jerks, most often the problem lies in the contamination of the Micro-USB port. In pockets, a pile is stuffed into it, which compresses and prevents the cable from entering to the end.

You can use a wooden toothpick or plastic spatula to clean the sleeves, and metal objects (needles, pins) are not recommended because you risk closing contacts and damaging the power controller.

If cleaning didn't work, try another power supply. If that didn't work, it could be the battery itself or the charger board, which would require a diagnosis at the service center. Software resetting (Settings → Advanced Settings → Recovery and Reset) can also help if the problem is caused by a software failure.

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In 90% of cases, the problem with charging Redmi 5 Plus is solved by replacing cheap cable with quality or cleaning the port from dust.

Frequently Asked Questions (FAQ)