LITHIUM PRIMARY BATTERY AND LIQUID NON-AQUEOUS ELECTROLYTE FOR LITHIUM PRIMARY BATTERY

A lithium primary battery includes a positive electrode, a negative electrode, and a liquid non-aqueous electrolyte. The positive electrode contains a positive electrode material mixture including LixMnOwhere 0≤x≤0.05. The negative electrode contains at least one of metal lithium and a lithium alloy. The liquid non-aqueous electrolyte contains a cyclic imide component and an organic silyl borate component. The concentration of the cyclic imide component in the liquid non-aqueous electrolyte is 1 mass % or less, the concentration of the organic silyl borate component in the liquid non-aqueous electrolyte is 5.5 mass % or less, and the mass ratio of the cyclic imide component to the organic silyl borate component contained in the liquid non-aqueous electrolyte is 0.02 or more and 10 or less.