Template: Pico UPS B Spec

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The Pico-UPS-B is a dedicated UPS (Uninterruptible Power Supply) module designed for Raspberry Pi Pico. It incorporates a Li-po battery switching charger with power path management, and a voltage/current monitoring chip that allows monitoring the battery operating status via the I2C bus. What's more, the male pin header makes it possible to "stack" other modules on top.


  • Standard Raspberry Pi Pico header supports Raspberry Pi Pico series boards.
  • Incorporates Li-po battery switching charger with dynamic power path management, a more stable power supply.
  • I2C bus communication, monitoring the battery voltage, current, power, and remaining capacity in real-time.
  • Multi battery protection circuits: overcharge/discharge protection, over current protection, short circuit protection, and reverse protection, more safe and stable.
  • Onboard recharging indicator, power indicator, easy to check the battery status.


  • Recharge voltage: 5V
  • Control bus: I2C
  • Battery support: 600mAh 3.7V Li-po battery
  • Dimensions: 60 × 21mm






  • Li-ion and Li-po batteries are quite unstable. They may cause fire, personal injury, or property damage if they're not properly recharged or used.
  • Do not reversely connect the polarities when recharging or discharging the battery. Do not use an inferior charger/charging panel to recharge the battery.
  • When buying a Lithium battery, should always make sure the battery specification is compatible with the expansion board. Choose batteries from the formal manufacturer, and ensure the batteries will work stably and safely by aging test.
  • Lithium batteries have limited cycle life, they will also deteriorate as time goes by. Should be replaced with new ones when the batteries reach their max cycle life, whichever comes first.
  • Should be placed carefully and properly, keep it away from inflammable and explosive articles, away from children, and avoid any safety accident caused by careless storage.