Mainboard battery detection device

A mainboard battery detection device is suitable for detecting a battery and comprises a transistor, a first resistor, a second resistor, a substrate management controller and a voltage follower; thesubstrate management controller controls the transistor to be conducted or not conducted; the voltage follower receives a first input voltage from the second resistor, receives a same second input voltage, and outputs the same voltage as the second input voltage to the substrate management controller. The substrate management controller receives a first output voltage and a second output voltage from the voltage follower respectively when the transistor is not conducted and conducted; the substrate management controller compares whether the difference between the first output voltage and the second output voltage is larger than a default voltage value or not to judge whether the battery does not exist or not. 一种主板电池侦测装置，适用于侦测一电池，包含一晶体管、一第一电阻、一第二电阻、一基板管理控制器，及一电压随耦器，该基板管理控制器控制该晶体管导通或不导通，该电压随耦器自该第二电阻接收一第一输入电压，并接收一相同的