<p>This study explores the development and application of pure anatase crystals of titanium dioxide (TiO₂)-glass fiber-reinforced polymer composites (TGRPC) in battery management, focusing on enhanced structural integrity, thermal regulation, and electrical insulation. The samples integrate TiO₂ for its heat resistance and possible conductive properties with glass fiber to provide structural strength and resilience. The innovation of this work lies in the ultrasonic-assisted synthesis of highly crystalline anatase TiO₂ nanoparticles and their uniform incorporation into a fiber-reinforced polymer matrix as fillers, offering a new multifunctional composite solution for next-generation battery management systems. Firstly, the synthesis of highly crystalline TiO₂ nanoparticles in their pure crystalline anatase form and their infusion in polymer matrix for developing TGRPC was performed. Ultrafine nanoparticles were prepared via sonication, ensuring smaller particle size and higher crystallinity, which was confirmed by X-ray diffraction analysis. Later on, a range of experimental analyses, i.e., thermal conductivity, electrical resistivity, and mechanical testing, assess the suitability of TGRPC samples for battery applications were performed. Unlike conventional fillers, our approach ensures enhanced nanoparticle dispersion, crystallinity, and interfacial adhesion, resulting in significant improvements in tensile strength and thermal stability. The results indicate that TGRPC exhibit favorable thermal and mechanical properties, suggesting potential for improved battery efficiency and safety. An optimal tensile strength of 1352.15&#xa0;MPa was achieved with parameters of 6 mL TTIP, 5 mg TiO₂, and a 20% glass fiber volume fraction. This work highlights the potential of TGRPC for applications requiring enhanced mechanical properties.</p>