Tramegger battery detection device

The invention provides a tramegger battery detection device. The tramegger battery detection device is mainly composed of a CPU (Central Processing Unit) module, an internal resistance detection module, a liquid crystal display module, an operation key module, a detection voltage/current port and an auxiliary switch power source; the detection voltage/current port is connected with a battery anode/cathode output port of RS232 interfaces of a tramegger and further connected to the CPU module by use of the detection voltage/current port; the operation key module is used for controlling the work of the internal resistance detection module in such a manner of being connected with the CPU module and by arranging related parameters of internal resistance detection; the CPU module is capable of obtaining the internal resistance and the electric quantity of the built-in battery of the tramegger by processing and calculating voltage and current signals transmitted by the internal resistance detection module, and the CPU module is further used for driving the liquid crystal display module connected with the CPU module to display the test results. The tramegger battery detection device has the characteristics of simple structure, convenient operation, reliable performance and the like.