How to charge Xiaomi phone without wire

Owners of modern Xiaomi and Redmi smartphones often face a situation where there is no usual cable at hand, and the battery level is critically low. Wireless charging is no longer a rarity and has become the standard for many flagship and mid-budget models. However, not all users know the full range of capabilities of their devices, beyond simply applying to a “pancake” charger.

In this article, we will discuss in detail all the existing ways to transfer power to your gadget without using physical USB Type-C or Micro-USB connectors. We will consider not only standard induction panels, but also the reverse charging function that allows you to turn your phone into a power bank for other devices.

Before you get to the bottom of it, it's important to know if your particular model supports the technology you need. Some budget Redmi or POCO series may not have a built-in receiver, which requires special adapters. Let's figure out how to determine your device's capabilities and use them effectively in the home.

Verification of wireless charging support

The first step is to determine the specifications of your device. Not all Xiaomi smartphones have an integrated induction charging module. Usually, this feature is provided by the flagship Mi series (for example, Mi 9, Mi 10, Mi 11) and the upper models of the Mi Mix series. Budget lines often lack this component to reduce the final cost.

There are several ways to check for a module, and the easiest way to do this is to look at the specifications on the official website or the settings menu, and if there is no wireless charging item in the Settings → Battery section, there is probably no hardware module, and you can also look at the documentation that comes with the package, which lists all the supported standards.

⚠️ Warning: Do not try to disassemble your smartphone for visual reel search unless you have professional skills.This will result in a loss of warranty and may damage the waterproofing.

There is also a software method of checking through the engineering menu or special diagnostic applications available on Google Play, which reads information about the hardware components of the phone and gives a report on the availability of the phone. NFC-If the module is detected, you can safely proceed to the choice of charger.

Use of external induction panels

If your smartphone supports Qi, the charging process is as simple as possible. You need a special charger that connects to the power grid. The principle of operation is based on electromagnetic induction: the current in the base coil creates a magnetic field that puts current in the receiver coil inside the phone.

To start using, you need to place your smartphone strictly in the center of the charging pad. A shift of even a few millimeters can interrupt contact or significantly reduce the rate of energy transfer. Modern Xiaomi panels are often equipped with active cooling system and LED indicators that signal the status of the process.

It is important to consider that thick cases or cases with metal elements can block the signal. In such cases, the protection will have to be removed. It is also worth noting that the induction charging speed is usually lower than that of wired ones, especially if a power supply is used with a weak power supply.

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Use at least 20W chargers for optimal speed, even if the phone only supports 10W wireless reception.

Below is a table of compatibility of popular models with different power standards:

Reversible wireless charging function

Many of Xiaomi’s flagships today have a unique capability: they can act as a charger themselves, a feature called reverse wireless charging, which allows you to charge other gadgets just by putting them on the back of your phone, and is the perfect solution for emergency charging headphones, smartwatches or other smartphones.

To activate this mode, go to the Settings menu → Advanced Settings → Wireless Recharge (the path may vary slightly in different versions of MIUI). Once the switch is turned on, the phone will emit a magnetic field. On the back of the device, you need to put a device that supports Qi charging.

It's worth remembering that this mode consumes the main battery quite quickly and has low efficiency due to the double energy conversion. So using it to fully charge the tablet is not advisable, but "reviving" the dead headphones is a great idea.

⚠️ Warning: Do not leave your phone in reverse charging mode unattended for a long time.The devices can get very hot, which will negatively affect the battery life.

Receiver adapters for models without Qi support

What if your Redmi or POCO doesn't have a built-in coil, but you really want to get rid of the wires? The accessories market offers a one-stop solution, wireless charging receivers, which are thin plastic plates with a built-in coil that plug into the smartphone charging connector.

Installing such an adapter is simple: it is inserted into a USB Type-C or Micro-USB port, and then glued to the back of the phone or inserted under the case. For owners of phones with a removable battery, there are models that are connected directly to the battery contacts, which allows you to close the lid normally.

However, this method has its drawbacks: First, the charging port is always busy, which prevents you from connecting to your computer or using wired headphones (if you don't have an adapter); Second, the charge rate through such adapters rarely exceeds 1A, which makes the process very slow. However, this is the only way to make wireless charging available on budget models without opening the case.

When choosing a receiver, it is important to pay attention to the thickness of the structure, too thick an adapter may prevent the cover from closing tightly or create a gap that prevents the induction panel from working properly, and cheap models may not have protection against overheating.

Alternative and non-standard methods

In the pursuit of technology, users sometimes look for ways to charge that seem fantastic, such as charging from a Wi-Fi router or through a sound wave, which at this stage of technology, are either myths or work with negligible efficiency, not even enough to keep the phone awake.

There are experimental over-the-air technologies that are being demonstrated by major companies including Xiaomi, and the Mi Air Charge concept involves a special base station that forms a narrowly-directed millimeter wavelength beam, but at the time of writing, the technology is not mass-produced and is only available as prototypes.

Also worth mentioning are solar panels built into cases, which, while technically allowing you to charge your phone without an outlet, the actual area of the panel on your smartphone case is too small to charge quickly, only for very slow maintenance of charge levels in camping conditions in bright sun.

Optimization and process safety

Regardless of the method chosen, the safety of lithium-ion batteries should be a priority. Wireless methods often lead to more intense heating of the device than wired ones. High temperature is the main enemy of the battery, accelerating its degradation.

To minimize the risks, it is recommended to remove the protective case during intensive wireless charging, if it is dense and does not remove heat, and do not cover the phone with a cloth or other materials that prevent air circulation.

Using original or certified Xiaomi accessories ensures compliance with safety protocols. Cheap Chinese counterparts may not have protection against voltage surges, which creates a risk of damage to the power controller inside the smartphone.

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The optimal temperature for charging is between 10 and 30 degrees Celsius, and avoid direct sunlight on your phone during the process.

Check the status of the charging port regularly, even if you switch to wireless format. Dust and pile stuffed into the connector can oxidize the contacts, which in the future will lead to problems with data transmission or wired charging if the wireless suddenly stops working.

Frequently Asked Questions (FAQ)