Safety mobile power supply

The invention provides a safe mobile power supply, which belongs to the technical field of mobile power supplies and comprises a power supply box body, L-shaped sliding seats are symmetrically mounted on two sides of the power supply box body, a first heat dissipation opening is formed in one side of the upper part of each L-shaped sliding seat, a pull rod is inserted into the upper part of each L-shaped sliding seat, second heat dissipation openings are formed in two sides of the power supply box body, and hidden buffer seats are slidably connected to the L-shaped sliding seats. The hidden buffer seat comprises four groups of carriage seats, the carriage seats are connected through reset extension springs, and hidden support plates are arranged on two sides of the power supply box body. According to the invention, the buffer seat can be conveniently changed in two use states through the L-shaped slide rail, the buffer seat can start a buffer function when the power supply moves, and heat dissipation is not h