1/29/2019

Pi-UpTimeUPS - UPS and power mobility for Raspberry Pi - Alchemy Power Inc.

http://alchemy-power.com/pi-uptime-ups/

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I. Pi-UpTimeUPS Overview

Pi-UpTimeUPS is an Uninterrupted Power Supply (UPS) for a Raspberry Pi. Pi-UpTimeUPS ts snugly on top

of a Raspberry Pi making the Raspberry Pi mobile by providing a power source for an extended period of

time.

Pi-UpTimeUPS provides the following capabilities:

1)      Battery backup power and UPS. Pi-UpTimeUPS provides continuous operations for up to ten (10)

hours (depending on battery type used). On tests done, we have measured around twelve (12) hours  using

two 18650-3000 mAh fully charged batteries (as measured on a Pi-3 model B board, with Wi-Fi and

Bluetooth on.) The run time will vary depending on the model of the Raspberry Pi used and the peripherals

connected to the Raspberry Pi. Batteries take approximately 5 hours to charge. The larger the battery size

the longer the UPS run time.

2)      Provides steady power to the Raspberry Pi. Pi-UpTimeUPS protects the Raspberry Pi from brown-

outs as well as power failures preventing unwanted downtime. Pi-UpTimeUPS accepts power input from an

external power source and charges its batteries at the same time it provides clean uninterrupted power to

Raspberry Pi. A new power source is not needed. The same power source to a Raspberry Pi can be used

with the Pi-UpTimeUPS board. Make sure the power source is connected to the Pi-UpTimeUPS board and

not the Pi power port. This enables Pi-UpTimeUPS to charge the battery and Power the Pi at the same time.

3)      Automatic recharge. Pi-UpTimeUPS recharges the battery when the power comes back on after a

power failure.

4)      Auto shutdown. The battery charge level is monitored by hardware. This status is indicated on GPIO

26, pin 37. Sample code is provided to monitor the status of the GPIO and shutdown the Pi properly when

the battery level is low.  The software is downloaded here.

Pi-UpTimeUPS. Power mobility and UPS for a Raspberry Pi.

Pi-UpTimeUPS. Power mobility and UPS for a Raspberry Pi.

Pi-UpTimeUPS. Power mobility and UPS for a Raspberry Pi.