Owners of the popular Xiaomi Redmi Note 7 smartphone often wonder about the possibility of switching to a more convenient way to replenish battery power. Although this model does not originally have a built-in inductance coil for the Qi standard, it is technically possible to implement wireless power transfer, which requires the purchase of additional equipment in the form of an external receiver that integrates into the device body.
The upgrade process is not complicated, but requires accuracy and understanding of the principles of operation of induction currents. Proper installation of the receiver allows you to forget about the constant connection of the cable and use any compatible charging stations. In this article, we will discuss in detail how to turn your smartphone into a device with wireless charging, which accessories to choose and how to avoid common errors in operation.
It's worth noting that the rate of energy recharge will be different from the wired method, and the heat output may be higher than usual, but the comfort you get just by putting your phone on a panel often outweighs these minor drawbacks. Next, we'll look at all the technical nuances necessary to successfully implement this feature on your gadget.
Technical features of the Redmi Note 7 power system
Xiaomi Redmi Note 7 is based on the Qualcomm Snapdragon 660 platform, which supports modern fast charging protocols. The device is equipped with an 18W adapter and a USB Type-C connector. This provides a high recovery rate of 4,000 mAh battery capacity. However, the lack of native support for the Qi standard means that there is no necessary receiving module inside the case.
So to implement the wireless method, you need to use an external receiver that connects to the charging port, and these modules act as an intermediary between the charging station and the phone's power controller, and they convert the electromagnetic field into an electric current that then goes into the battery, and it's important to understand that the energy transfer efficiency here is lower than it is with direct contact.
- ⚡ Standard wired charging provides maximum speed and minimum heating.
- 📡 The wireless method requires the installation of an additional receiver about the thickness of 1-2 mm.
- 🔋 The efficiency of wireless energy transmission is usually 70-80% wired.
The use of external receivers does not violate the warranty if the installation is made without damage to internal components. Most modern modules have built-in protection against overheating and overcharging. This makes them safe to use with MIUI and the hardware of the smartphone.
Choosing the Right Wireless Charging Receiver
The accessories market offers many receiver options, but not all of them are equally effective for the Redmi Note 7. The key is the thickness of the module and the location of the contact group. Since the smartphone has a glass back cover, the signal passes through it without obstacles, which is a big plus. However, the thickness of the receiver itself can affect the density of the attachment to the charging station.
It is recommended to choose models with a Type-C connector, as this provides reliable contact and support for sufficient current. Cheap analogues with a Micro-USB connector through the adapter can work unstable and warm up, and you should also pay attention to the presence of a control chip that coordinates the voltage with the smartphone controller.
⚠️ Warning: When buying a receiver, make sure that its dimensions match the interior space under the back cover of your phone.A module that is too thick can cause the case to deform or the glass to detach.
The best choice is to use a Fast Charge or QC 2.0/3.0 receiver if your transmitter also supports it, which will reduce latency, visually a thin plate with a contact pad and an output plume, and the quality of the plume's execution directly affects the longevity of the device.
Instructions for installing the receiver in the body
The process of installing the receiver requires a minimum set of tools: a suction cup, a thin plastic blade (mediator), and possibly a dryer to soften the glue. Before starting work, you need to completely turn off the Xiaomi Redmi Note 7 smartphone. This will prevent short circuit and damage to the electronics in the event of careless handling.
First, gently peel off the back glass panel. To do this, warm the body perimeter with a hair dryer to 60-70 degrees so that the glue becomes elastic. Then use a suction cup to lift the edge of the glass, and insert a mediator. Move the blade along the perimeter, gradually separating the lid from the frame. Act carefully so as not to damage the glass or plume scanner (if it is located at the back, although in this model it is at the rear).
☑️ Checklist before disassembly
Once the lid is removed, you'll see the battery and other components. The receiver needs to be placed on the back of the battery or on the inside of the lid if space permits. The plume gently connects to the USB Type-C port. Make sure the connector is plugged in to the end and fixed. The extra wire can be gently stacked along the edge of the housing, avoiding overbending.
| Work segment | Action required | Risks. |
|---|---|---|
| Heating the hull | Warming up the perimeter with a hair dryer 2-3 minutes | Battery overheating |
| Autopsy | Separation of glass by mediator | Cracking on the glass |
| Installation | Laying the receiver and connecting the plume | Damage to the plume |
| Assembly | Sticking the lid onto a new glue | Flawed fit |
The final step is to apply a new layer of glue (B-7000 or special tape) and install the back cover in place. For better fixation, it is recommended to press the edges with rubber harnesses for several hours. After assembly, turn on the phone and check the reaction to the charger. The indicator should inform you that the charging process has begun.