The utility model provides a JHDL-ZX full online storage battery test maintenance system which is characterized by comprising a test host, a control system and a storage battery set, wherein the test host and the control system are mounted in a matched way; the storage battery set is connected with the test host through an electrical wire and connected with a direct-current charge device; the direct-current charge device is connected with a power supply; the storage battery set also comprises a Bluetooth data acquisition box. According to the system, during discharging, storage batteries do not need to be disconnected from a charger, so that the safety is relatively high; unqualified batteries can be discovered in time in a storage battery maintenance process, so that the unqualified batteries can be replaced in time and potential safety hazards are eliminated; the residual capacity of the battery set can be mastered in real time in the storage battery maintenance process; compared with an original discharge instrument, the controllability is relatively good and a worker does not need to nervously work.