> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Gravity: I2C 3.7V Li Battery Fuel Gauge

**Type:** Product page · **SKU:** DFR0563 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/gravity-i2c-3-7v-li-battery-fuel-gauge.html ([markdown](https://core-electronics.com.au/gravity-i2c-3-7v-li-battery-fuel-gauge.html.md))

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...

## Pricing

- **Price:** $18.10 (inc GST) — $16.45 AUD, exc GST
- **Quantity discounts:** 6+ $15.64 (exc GST) · 12+ $14.97 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Sep 02 and Sep 07.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=DFR0563:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/DFR0563:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

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 a 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 understanding the power balance of charge and discharge of the solar system.

![](https://core-electronics.com.au/attachments/localcontent/DFR0563-Arduino_22091d092e5.jpg)

Gravity: 3.7V Li Battery Fuel Gauge Connection Diagram (Arduino UNO)

![](https://core-electronics.com.au/attachments/localcontent/DFR0563-Raspberry_188093741e2.jpg)

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

- [Product wiki](https://www.dfrobot.com/wiki/index.php/Gravity:_3.7V_Li_Battery_Fuel_Gauge_SKU:_DFR0563)
- [More Documents](https://www.dfrobot.com/wiki/index.php/Gravity:_3.7V_Li_Battery_Fuel_Gauge_SKU:_DFR0563#More_Documents)
 
### Parts List

- Gravity: I2C 3.7V Li Battery Fuel Gauge x1
- XH2.54-2P Header x1
- Gravity-4P I2C/ UART Sensor Wire x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/d/f/dfr0563-900x600.jpg)