Pallet truck comprising two forks for lifting and transporting a pallet, a hydraulic lifting system comprising a first hydraulic pump and a hydraulic cylinder; a tiller arm that is operable for powering the first hydraulic pump by a manual lifting an lowering movement of the tiller arm, such that a load is lifted by actuating of the hydraulic cylinder on the forks to a maximal height H and at a maximal weight M, further comprised are a main wheel that are hinged in a vertical axle to which they are attached, the tiller arm is connected to said wheels for steering them by rotating in the vertical axle, wherein the pallet truck comprises an electric motor and a second hydraulic pump powered by said motor, wherein said electric motor and the second hydraulic pump are operable to lift the forks to the maximal height h, wherein h < H, and/or wherein the electric motor and second hydraulic pump has a capacity to lift a maximal load of mass m, wherein m < M. There is also disclosed a methodof modifying a pallet truck a first method of operating a pallet truck and a second method of operating a pallet truck. Further disclosed is computer readable software for executing any of the methods.