The 1/2AA Li-MnO₂ battery supports continuous currents up to 500 mA and pulse demands common in wireless modules, trackers, and small pumps, while maintaining stable operation from –40 °C to +85 °C. Precision winding and electrolyte purification ensure minimal internal resistance and consistent performance, and SUNJ’s ISO9001-certified production lines subject every cell to batch-traceable quality checks and full UL/IEC certification, delivering the dependable high-drain power your advanced IoT devices require.