Raspberry Pi PICO UPS Pico Lite V0.4 User Guide

   Product description

  • This is a portable power supply for the Raspberry Pi Pico. Supports the use of a single 18650 lithium battery for power supply, freeing your pico from the shackles of cables and making it more convenient for your DIY Pico projects. The remaining battery power can be read from 4 LED indicators. You can also read battery voltage and current information by connecting a USB to TTL cable to the serial port pins of the UPS. The charging prompt when charging is very intuitive. When the battery is fully charged, it will stop charging and the "standby indicator" on the panel will light up. All GPIOs are lead out and provide clear silkscreen, which is very convenient for Pico experiments.
  • It is a plug and play module.
  • This device is a power supply device, please pay attention to the positive and negative poles of the battery. Reversing the battery can damage your UPS device or Pico development board. Please check the circuit carefully before turning on the power switch to avoid short circuit damage to the device.


  • Plug and Play
  • Only supports Raspberry Pi Pico
  • Monitor battery voltage (error ±2%), monitor battery current (error ±10%).
  • Monitor charging current.
  • If not in charging mode, the power LED indicator will not light, wake up every 2 minutes for 5 seconds to reduce light pollution.
  • In charging mode, you can judge whether it is fully charged, and stop flashing when fully charged.
  • In charging mode, the LED will flash when not fully charged.
  • Evenly distribute the power ratio of each LED to prevent the load from popping up.
  • Static power consumption is less than 10mA.
  • Serial output data.
  • Only supports 18650 lithium battery

   Serial output data format

  • The parameters are read from the onboard serial port, you can connect the USB-To-TTL line to the pins (TX and RX), Silkmark is JP3.
  • NOTE: It is normal to still be able to read the current draw without connecting the PICO and turning the power switch on. After all, the board also consumes less power, which can be ignored.
  • Data format: [Battery voltage mV] | [Charging current mA] | [Discharging current X10] mA
  • Battery Voltage | Charge Current In | Battery Current


  • When the data shows a negative sign it means the battery is charging.
  • When the data is displayed as positive, it means the battery is draining.
  • Data parameters are separated by pipe symbols (delimiter is "|")
  • microPython can use the split method to split data information.

  • Insert the battery (18650) into the slot.

  • Connect GP0 to the RX pin and GP1 to the TX pin on the UPS JP3 header.

  • Open a new file and paste the following code, then press the run button on Thonny IDE.
  • Thonny IDE download: [ https://thonny.org/ ]

   Pin Definition


Price: $21.89
Part Number: UPS Pico Lite V0.4
Brand: Spotpear
SKU: 0102146