Uninterruptible Power Supply UPS HAT For Raspberry Pi

Introduction

UPS HAT For Raspberry Pi, 5V Uninterruptible Power Supply, Multi Battery Protection Circuits

Model: RPA20901S

Features

• Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards
• I2C bus communication, monitoring the batteries 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, along with the equalizing charge feature, more safe and stable
• Onboard 5V regulator, up to 2.5A continuous output current
• 5V USB output, convenient for powering other boards
• Batteries warning indicators, easy to check if the battery is connected correctly

Specification

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

Usage

You can just attach the UPS HAT on the 40PIN GPIO of Raspberry Pi or connect the i2c interface and to Raspberry Pi by wires. VCC should be connected to 3.3V Open a terminal and run the following commands:

sudo apt-get install p7zip
wget https://www.waveshare.com/w/upload/d/d9/UPS_HAT.7z
7zr x UPS_HAT.7z -r -o./UPS_HAT
cd UPS_HAT
python3 INA219.py

The terminal will print the IP address, battery voltage, current and the percentage of battery quantity, as well as the CPU, GPU and memory information after starting the server

Note: if the current value is negative, it means that the batteries are feeding the Raspberry Pi. If the current value is positive, it means that the batteries are charging.