Gravity：I2C 3.7V 鋰電池電量計

• Maxim專利算法，鋰電池電壓和剩餘電量的準確讀數
• 沒有完全到空的重新學習過程，沒有偏移累積錯誤，即插即用
• 寬輸入電壓，兼容 3.3V 和 5V 控制器
• 可編程低功耗警報中斷閾值
• 電池反接保護

• 太陽能氣象站、路燈
• 鋰電池充電器
• 機器人技術

• 輸入電壓（VCC）：3.3V~6.0V
• 電池輸入電壓（BAT IN）：2.5V~4.2V
• 電池類型（BAT IN）：3.7V 鋰聚合物/鋰離子電池
• 工作電流：50 uA
• 接口：重力I2C（邏輯電平：0-3.3V）
• 尺寸：22.0*30.0mm/0.86*1.18 英寸

• 產品維基
• 更多文件

• Gravity：I2C 3.7V 鋰電池電量計 x1
• XH2.54-2P 接頭 x1
• Gravity-4P I2C/ UART 傳感器線 x1

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 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.

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