Portable small lithium battery for desert exploration

The utility model discloses a portable small-sized lithium battery for desert exploration. The portable small-sized lithium battery comprises a lithium battery body, a heat dissipation protection cover, first heat dissipation holes and a sand prevention unit, the lithium battery body is sleeved with a heat dissipation protection cover in a clearance manner; the sliding baffle plate presses the sponge plate through the elastic piece to extrude the upper end opening of the heat dissipation protection cover, so that the charging interface end is kept isolated and sealed when the lithium battery body is not used, and when charging is needed, the sliding baffle plate is pushed by fingers to expose the upper end interface of the lithium battery body, and after a charging wire is inserted, the sliding baffle plate is put down; and the sponge plate is in contact with the charging wire and then deforms to be opened with the upper end of the heat dissipation protection cover again, so that the upper end interface of th