How to turn off fast charging on Xiaomi Redmi 7: 3 proven ways

Why do Redmi 7 owners want to turn off fast charging?

Fast charging is one of the key advantages of modern smartphones, but it doesn’t always benefit the device. Xiaomi Redmi 7, released in 2019, supports Quick Charge 3.0 technology (up to 18 watts), which allows you to charge the battery up to 50% in 30-40 minutes. However, this convenience has the flip side: accelerated battery wear, overheating of the case and even the risk of sudden shutdown during heavy use.

Research shows that the Li-ion batteries used in Redmi 7 lose up to 20-30% of capacity after 300-500 fast charging cycles. For comparison, with standard charging (5 watts), this figure increases to 800-1000 cycles. Especially relevant for users who keep a smartphone on charge all night or use non-original adapters. If you notice that the battery has become more quickly set down and the phone heats up even at minimal load, you may want to consider turning off fast charging.

In this article, we will discuss three working methods: through standard settings, engineering menus and third-party applications, and you will learn how to check whether fast charging is actually turned off, and what alternatives exist for caring for the battery.

📊 Why you want to turn off fast charging on Redmi 7?
Battery wears out fast
Phone overheats
I'm using a non-original charger.
Experimenting with settings
Other

Method 1: Disconnect via MIUI settings (the easiest method)

The safest and most recommended way is to use the built-in MIUI options. Unfortunately, the standard firmware Redmi 7 (Android 9 Pie) does not have a direct option to turn off fast charging, but there is a workaround through the developer mode.

Here's the step-by-step instruction:

  1. Activate Developer Mode: Go to Settings → About Phone. Click 7 times in a row on MIUI Version until the notification “You are a developer” appears.
  2. Turn on USB debugging: Return to Settings → Additional → Developer. Find the USB debugging option and activate it.

Turn off the fast charger:

  • In the same Developer Menu, scroll down to the Network section.
  • Find the USB Charging Configuration (or USB Charging Configuration).
  • Select the Standard (500 mA) value instead of Fast (1500 mA).

Important: Some versions of MIUI may have their engineering menu blocked. If nothing happens after you enter the code, try using the MTK Engineering Mode app (available on Google Play), but note that it requires root rights.

What to do if the engineering menu is not opened?
If the ##4636### code doesn’t work, try the following options: 1. Install the Shortcut Maker app and search through it for EngineeringMode. 2. Check if the operator has blocked access to the engineering menu (relevant to branded devices). 3. Update the firmware to the latest version of MIUI – sometimes this restores access to hidden settings.

Method 3: Third-party applications for charging control

If the first two methods didn’t work or seemed too complicated, you can use specialized utilities. For example, the AccuBattery app (available on Google Play) not only displays detailed battery statistics, but also allows you to limit the charging current.

How it works:

  • 📊 Battery Health Monitoring: App shows the real battery capacity and the degree of wear.
  • ⚡ Current Limitation: You can set a limit of 1000 mA, which corresponds to standard charging.
  • 🔋 Overheating Notifications: You will receive a warning if the battery temperature exceeds the safe 40°C.
  • 📉 Cycle statistics: track how many full charge cycles your battery has gone through.