DFRobot
Gravity: I2C 3.7V Li Battery Fuel Gauge
3.7V lithium batteries are commonly used in many projects. However, the remaining power and voltage of the lithium battery are highly nonlinear. We can only...
3.7V lithium batteries are commonly used in many projects. However, the remaining power and voltage of the lithium battery are highly nonlinear. We can only roughly judge whether the battery is full or almost empty according to its voltage. The Gravity I2C 3.7V Lithium Battery Fuel Gauge employs Gravity I2C interface, ultra-low operating current, and real-time tracking of the relative state of charge (SOC) of the battery through Maxim's patented algorithm, eliminating the need for full-to-empty relearning and offset accumulation errors. Plug and play to accurately measure the voltage and remaining power of the battery. The module also features as a low battery power alert interrupt function. When the battery power falls below specified threshold, the ALR pin generates a falling pulse to trigger the external interrupt of the controller.
You will find it a great help to estimate the battery life by learning the power consumption of the system with this module. In the solar powered projects, it helps to record the status of the battery power change in a day or even months, which benefits to understand the power balance of charge and discharge of the solar system.
Gravity: 3.7V Li Battery Fuel Gauge Connection Diagram (Arduino UNO)
Gravity: 3.7V Li Battery Fuel Gauge Connection Diagram (Raspberry Pi 3B)
FEATURES
- Maxim's Patented Algorithm, accurate voltage and remaining power readings of lithium battery
- No Full-to-Empty Relearning Process, No Offset Accumulation Errors, Plug and Play
- Wide Input Voltage, Compatible with 3.3V and 5V Controllers
- Programmable Low Power Alert Interrupt Threshold
- Battery Reverse Connection Protection
APPLICATIONS
- Solar Weather Station, Street Light
- Lithium Battery Charger
- Robotics
SPECIFICATION
- Input Voltage (VCC): 3.3V~6.0V
- Battery Input Voltage (BAT IN): 2.5V~4.2V
- Battery Type(BAT IN): 3.7V Li-polymer/Li-ion battery
- Operating Current: 50 uA
- Interface: Gravity I2C (logic level: 0-3.3V)
- Dimension: 22.0*30.0mm/0.86*1.18 inches
DOCUMENTS
Jargon buster
Plain-language definitions for the technical terms used above.
- Gravity
- Gravity is DFRobot’s plug-in connector system for sensors, motors and modules, using standard cables to reduce loose jumper wiring. It matters because Gravity-compatible parts can connect directly to these ports, while non-Gravity parts may need adapters or manual wiring.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- State of charge
- The estimated remaining battery capacity, usually shown as a percentage. It helps you decide when to warn the user, reduce power use, or recharge the battery.
Find this product in
Brands
Power & Batteries
Supplier page — dfrobot.com
Supplier Description · 674.3 KB · Click any page to view full size
Related Tutorials
Free guides on learn.littlebird.com.au
