LiFePO4wered/Pi+ is a Safer and Longer Lasting UPS for Raspberry Pi (Crowdfunding)

We’ve already covered several UPS solution for Raspberry Pi boards, but LiFePO4wered/Pi+ is a little different because instead of relying on LiPo (Lithium Ion Polymer) batteries, it comes with LiFePO4 (Lithium Iron Phosphate) battery which are said to be safer and longer-lasting albeit at the cost of lower capacity.

LiFePO4wered/Pi+LiFePO4wered/Pi+ specifications:

  • Two battery size options:
    • 18650 size – 1,500 mAh 3.2 V LiFePO4 cell with up to 2A max continuous load current
    • 14500 size – 600 mAh, 3.2 V LiFePO4 cell with up to 0.75 A max continuous load current
  • Smart charge controller – Over-charge protection, auto-adjusting charge current, customizable maximum power point (MPP) voltage
  • Smart power manager:
    • I2C communication
    • Power manager and daemon – work together to ensure clean shutdowns and provide over-discharge protection
    • Continuous monitoring – input voltage, battery voltage, output voltage, and load current
    • On/off button
    • Green PWR LED & Red CHRG LED
    • Wake timer – Wakes up RPi as needed for low duty cycle applications.
    • Real-time clock
    • Auto boot
    • Auto shutdown when input power is removed, either immediately or after a programmable amount of time.
    • Application watchdog – Flash the PWR LED or trigger a shutdown/reboot if the user application fails to service the timer within a configurable amount of time.
  • Dimensions
    • 18650 size – 52 mm x 75 mm
    • 14500 size – 47 mm x 65 mm

Beside the Raspberry Pi boards, the board has been tested with Odroid-C2, NanoPi S2, some Allwinner H3 boards, and ASUS Tinker Board. It should work with any board compatible with the 40-pin RPi header.

18650 vs 14500 Batteries
18650 (left) vs 14500 (right) Battery Option

LiFePO4wered/Pi+  board can power a Raspberry Pi for up to nine hours from its battery.  Silicognition LLC – the company behind the project – provide several open source host-side tools and software package namely LiFePO4wered daemon that takes care of shutdown and RTC management, lifepo4wered-cli command line tool for configuration and access to all features, as well as shared libraries  with language bindings for C/C++, Python and Node.js, all of which can be found in their GitHub repo.

Some of the advantage of Lithium Iron Phosphate (LiFePO4) batteries over LiPo batteries include:

  • High continuous load current
  • Longer lasting with thousands of recharge cycles, instead of just hundreds
  • Safer, as they don’t catch fire or explode
  • More Stable: 3.2 – 3.3 V during most of discharge
  • More durable with low self-discharge rate, no memory effects, no degradation from extended charging
  • Environmentally friendly with no heavy metals, RoHS compliant, and reusable thousands of times
  • Better suited to rough environments, as they can operate in both cold (down to -20°C) and hot (up to 60°C) temperatures.

The UPS / battery management board is now offered on CrowdSupply where you can pledge $39 for the 14500 kit with a 600 mAh battery, or $45 for the 18600 kit with a 1,500 mAh battery. Shipping is free to the US, but adds $10 to the rest of the world. Delivery is scheduled for the end of October 2018 (14500 battery kit) or January 2019 (18600 battery kit).

Share this:

Support CNX Software! Donate via cryptocurrencies or become a Patron on Patreon

ROCK Pi 4C Plus
Notify of
The comment form collects your name, email and content to allow us keep track of the comments placed on the website. Please read and accept our website Terms and Privacy Policy to post a comment.
Weller PCB manufacturer