This power supply is not capable of supplying 5V at 5APower to peripheralswill be restricted. Power Raspberry pi 5 with battery pack problem error solution- Fixing the 5A Current Limit

Error -
"This power supply is not capable of supplying 5V at 5APower to peripheralswill be restricted." 
If we supply power via battery or buck converter.

Solution- 1
  1. Open Terminal CMD and follow commands
  2. sudo rpi-eeprom-config --edit
  3. Enter Password
  4. Add line- PSU_MAX_CURRENT=5000
  5. save and reboot- press Ctrl + O, then Enter to save and Ctrl + X to exit
  6. sudo reboot


Solution-2
Ignore the power supply check and allow the USB ports to draw the maximum current (up to 1.6A total for Pi 4/5).

  1. Open the Terminal (Press Ctrl + Alt + T).

  2. Open the Config File: Type the following command to open the configuration file with administrative privileges: sudo nano /boot/firmware/config.txt (Note: On older OS versions, the path might just be /boot/config.txt).

  3. Add the Line: Scroll to the very bottom of the file and add this exact line: usb_max_current_enable=1

  4. Save and Exit: * Press Ctrl + O then Enter to save.

    • Press Ctrl + X to exit the editor.

  5. Reboot: Apply the changes by restarting your Pi: sudo reboot


If you can't access the terminal on the Pi, you can do it from your laptop/desktop.(If the Pi won't boot or you have no screen)

  1. Shutdown the Pi and remove the microSD card.

  2. Insert the card into your PC’s card reader.

  3. Open the partition named "boot" or "bootfs".

  4. Find the file named config.txt (or config) and open it with a text editor like Notepad.

  5. Add usb_max_current_enable=1 to the bottom of the file.

  6. Save the file, eject the card, and put it back in your Pi.











AI Generated-

Unlocking Full Power on Raspberry Pi 5: Fixing the 5A Current Limit

If you’ve recently hooked up your Raspberry Pi 5 to a battery or a buck converter, you’ve likely run into the dreaded warning:

"This power supply is not capable of supplying 5V at 5A. Power to peripherals will be restricted."

By default, the Pi 5 looks for a specific "handshake" from the official Raspberry Pi 27W USB-C PD power supply. When you use a DIY power source (like an XL4015 or LM2596 buck converter), that handshake never happens. The Pi plays it safe and limits the current to USB peripherals to 600mA.

Here are the two best ways to "tell" your Pi that your power source is actually up to the task.

Method 1: The EEPROM Way (Recommended for Pi 5)

This is the most professional method. It modifies the Pi's internal bootloader settings, making the fix permanent across different OS installs on the same board.

Steps:

  1. Open your terminal and run the EEPROM editor:

    sudo rpi-eeprom-config --edit

  2. Scroll to the bottom of the configuration file.

  3. Add this line:

    PSU_MAX_CURRENT=5000

  4. Press Ctrl + O and Enter to save, then Ctrl + X to exit.

  5. Reboot your system:

    sudo reboot

Method 2: The Config.txt Way (The Quick Software Fix)

If you don't want to mess with the EEPROM, you can apply a fix within the operating system’s configuration file. This is great for quick testing.

Steps:

  1. Open the terminal and access the config file:

    sudo nano /boot/firmware/config.txt

  2. Add the following line at the very end:

    usb_max_current_enable=1

  3. Save (Ctrl + O, Enter) and exit (Ctrl + X).

  4. Reboot:

    sudo reboot



Editing via PC (If the Pi won't boot or you have no screen)

If you can't access the terminal on the Pi, you can do it from your laptop/desktop.

  1. Shutdown the Pi and remove the microSD card.

  2. Insert the card into your PC’s card reader.

  3. Open the partition named "boot" or "bootfs".

  4. Find the file named config.txt (or config) and open it with a text editor like Notepad.

  5. Add usb_max_current_enable=1 to the bottom of the file.

  6. Save the file, eject the card, and put it back in your Pi.


Hardware Reality Check: Don't Forget the Wiring!

Software can unlock the limit, but it can't fix bad hardware. If your battery or buck converter can't actually deliver the current, your Pi will crash or throttle.

  • Dial in the Voltage: Set your buck converter to 5.1V or 5.2V. Standard 5.0V often drops too low under load.

  • Check your Gauge: Use thick wires (at least 20 AWG). Thin jumper wires act like resistors and will cause the "Low Voltage" lightning bolt to appear.

  • Cooling: High-current buck converters get hot! Make sure your power module has a heatsink if you plan on drawing close to 5A.

  1. Verdict: If you are building an industrial IoT project or a mobile robotics rig, Method 1 (EEPROM) is your best bet for a stable, long-term solution. Happy making!

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