Raspberry Pi UPS HAT User Guide

Introduction

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

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

Specifications

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

Hardware

The 8.4V interface is the charge port. You can plug the 8.4V 2A charger provided for charging the batteries.
The switched is the power switch, you can turn it into ON/OFF to turn on/off Jetson Nano Developer Kit
WARNING LED are the indicators of batteries, they turn on if you reverse batteries.
Note 1: Please check the WARNING LED when you mounting batteries, make sure that you set all the batteries in the correct way. You cannot charge batteries if you reverse them.
Note 2: The board may not work when you mount the batteries for the first time, you need to charge batteries on board for a while to activate them.
Note 3: Please use the charger provided, the module may be destroyed by other unsuitable power adapters/chargers.

How to use

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

OLED will display 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.

Demo codes

• Demo codes
  

Document

• Schematic
  
• INA219 Datasheet
  
• HY2120 Datasheet
  
• HY2213 Datasheet
  

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