In this study, manganese ion was used as a dopant to improve the electrochemical characteristics of SrO3–BaCO3–B2O3, a manganese-based cathode material. Manganese-doped strontium barium borate (MSBB) glass was synthesized using the melt quenching procedure. UV–Vis spectroscopy was used to investigate linear optical characteristics such as optical band-gap energy (Eg), extinction coefficient (k), refractive index (n) and, optical and electrical conductivity. Furthermore, spectroscopy was employed to determine the existence of Mn2+ and Mn3+ oxidation states of manganese oxide in the glass composition. The dielectric characteristics (εr and tan δ) and ac conductivity (σac) were examined at 30°C in the frequency range of 100 Hz to 5 MHz, and the space charge polarisation is dominant at the lower frequency domain, resulting in a high dielectric constant. The increase in frequencywas accompanied by an increase in ac conductivity over shorter distances,which might be explained by the mobility carrier hopping process. The paramagnetic features of prepared glass at room temperature were confirmed by vibrating sample magnetometry (VSM). The electrochemical characteristics of the prepared glass electrode in a 6 M KOH electrolyte were investigated using cyclic voltammetry (CV), galvanostatic charge–discharge, and electrochemical impedance spectroscopy (EIS). The MSBB glass electrode has the highest specific capacitance of 84 F g–1 at 2 A g–1 and the highest power density of 1388 W kg–1, with a specific energy density of 2 Wh kg–1. The mechanical behavior of the prepared glass under various stresses was examined using Vickers hardness measurement. The mass attenuation coefficient (μ/ρ), the mean free path (MFP) and the half-value layer (HVL) of the prepared glass were all evaluated.