Leveraging the standard AA form factor’s widespread compatibility, the AA smart meter battery combines 3.6 V Li-SOCl₂ chemistry with a 10-year shelf life and under 0.3% annual self-discharge, making it ideal for both new installations and retrofits in large-format meters and data loggers. Produced on SUNJ’s cutting-edge lines and individually inspected, each cell ensures consistent voltage delivery and reliability, reducing field maintenance and operational costs while meeting UL, IEC, and RoHS compliance standards.