The parking brake is one of the important parts of any aircraft. The function of parking brake system is to stop the aircraft safely at desired place on the ground. The purpose of using the hydraulic accumulator in parking brake system is to store the hydraulic liquid under system pressure. For proper brake operation, the accumulator is charged to the pressure of 207 bars. Earlier the manual hand pumping is used to charge the accumulator which is time-consuming not so accurate pressure is filled in an accumulator to overcome such problems, the battery operated hydraulic rig is developed.