[RETIRE] UPS HAT for Raspberry-Pi - Uninterruptible Power Supply

18650 based UPS Hat for Raspberry-Pi - 5V 2.5A

Firstly, it is a HAT so you can plug it directly on the Raspberry-Pi GPIO. Add two 18650 batteries, plug it onto the Pi and Voilà: your hat can load the batteries from external PSU and powier up the Raspberry-Pi. Once the batteries loaded, then disconnect the PSU and the HAT automagicaly switch over the batteries to power up the Raspberry-Pi.

This UPS fits a protection circuitery for  overload/over-dischage/over-current as well as short circuit and reverse polarity.
Next to the voltage regulator delivering 2.5A @ 5V (continuous supply), this HAT do also have load balancing circuitery.

It also feature a voltage monitoring as well as a current monitoriing (based on INA219) all available via I2C bus. Thanks to this, you can keep an eye on the 18650 Lipo Load/Unload status. Great to save working files before final power outage.

It is also possible to power-up external project thanks to the USB output fitted on the HAT.

The two warning LEDs on the board alert the user about the over-discharged batteries. Notice that LED are blinking when the battery is connected the wrong way.

Note:

• This product requires 2x 18650 battery to work.
• Delivred with US/EU PSU to reload the battery everywhere in the world. So this product contains a US -> EU adapter.

Technical details

• Output voltage：5V 2.5A continuous
• Charger：8.4V 2A US/EU
• Control bus：I2C
• Battery supported：18650 Li battery (NOT included)
• Dimensions：56mm × 85mm
• Mounting hole：3.0mm

Content

For each order, you will receive tge UPS Hat, a 8.4V battery charger, some spacer.
Raspberry-Pi and 18650 Lipo batteries not included.

Tutorial

• Demo code (based on INA219)