Nickel-metal hydride storage battery inspection method

Provided is a method for inspecting a nickel-hydrogen storage battery having a positive electrode having nickel hydroxide as an active material, a negative electrode containing a hydrogen storage alloy, and an electrolyte solution formed from an aqueous alkali solution, the method comprising: a charging/discharging step for charging and discharging a nickel-hydrogen storage battery having a positive electrode containing nickel hydroxide as an active material, a negative electrode containing a hydrogen storage alloy, and an electrolyte solution formed from an aqueous alkali solution; charging and discharging the target nickel-metal hydride storage battery at a set multiplying power to obtain a charging and discharging curve; a dQ/dV conversion step of replacing the charge and discharge curve with a dQ/dV curve; a damage index calculation step for calculating a damage index by adding the absolute values of the maximum peak at the time of charging and the minimum peak at the time of discharging in the dQ/dV curv