The invention supplies a method and system used to test electrolyte type storage battery performance. The method includes the following steps: connecting the storage battery to the test load with different resistance values at different time quantum; controlling the test load unit and the connection state; utilizing the discharge characteristic to gain internal resistance detecting value; correcting the detecting value and comparing it with given initial state to gain current residual capacity state value according to the relation curve between the different residual capacity state values andinternal resistance; then testing the storage battery performance. Thus the invention can be used to improve the test precision, realize remote testing, and further satisfy the routine maintenance demand for valve controlled sealed type lead-acid battery.