The temperature-concentration dependence of the electrical conductivity of Li₂O-B₂O₃ glasses in the temperature range of ∼180-310 C has been studied. For pure boron anhydride, the dependence logσ = f([1/T]) is linear, whereas for glasses with ∼2 mol % ≤ [Li₂O] < ∼10 mol %, similar curves are kinked. At higher Li₂O concentration the kinks disappear. Occurrence of kinks is attributed to variation of essence of current carriers from proton pattern for B₂O₃ to mixed proton-ion pattern for low-alkali glasses. Conductivity of glasses at [Li₂O] ≥ 20 mol % is stipulated by the formation of a continuous sublattice of polar structuralchemical entities (entities) [BO_4/2]^-Li⁺ and the migration of lithium ions.