![]() An onboard chip protects the batteries from over charging or over discharging ‐ both of which could damage the batteries.A temperature sensor monitors the temperature and suspends charging operation if the temperature rises to unsafe levels.The battery is protected in several ways: The external switch has to be normally off, with momentary on toggle.Ħ) Battery Protection. Should you plan to use an external switch or encase the Pi (with Pi-UpTimeUPS) in an enclosure, you can use this connection point to connect an external reset switch. There is also an additional connection for an external reset switch. A red LED turns on to signal the Pi power reset. A Power-Reset switch on Pi-UpTimeUPS resets the Pi after a shutdown. Pi-UpTimeUPS allows a restart of the Raspberry Pi after a software shutdown or whenever needed. With Pi-UpTimeUPS, there is no need to plug or unplug the external power source to reset the Pi. The software is downloaded here.ĥ) Power Reset switch. Sample code is provided to monitor the status of the GPIO and shutdown the Pi properly when the battery level is low. This status is indicated on GPIO 26, pin 37. The battery charge level is monitored by hardware. Pi-UpTimeUPS recharges the battery when the power comes back on after a power failure.Ĥ) Auto shutdown. This enables Pi-UpTimeUPS to charge the battery and Power the Pi at the same time.ģ) Automatic recharge. Make sure the power source is connected to the Pi-UpTimeUPS board and not the Pi power port. The same power source to a Raspberry Pi can be used with the Pi-UpTimeUPS board. 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. Pi-UpTimeUPS protects the Raspberry Pi from brown-outs as well as power failures preventing unwanted downtime. ![]() The larger the battery size the longer the UPS run time.Ģ) Provides steady power to the Raspberry Pi. Batteries take approximately 5 hours to charge. 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. Pi-UpTimeUPS provides the following capabilities:ġ) Battery backup power and UPS. Pi-UpTimeUPS provides continuous operations for up to ten (10) hours (depending on battery type used). Pi-UpTimeUPS fits 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 is an Uninterrupted Power Supply (UPS) for a Raspberry Pi. Note ‐ batteries or the Raspberry Pi shown are not included. Pi-UpTimeUPS provides power mobility to the Raspberry Pi.
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