Delivering up to 800 mAh in a tiny 2/3AA coin-cell footprint, the 2/3AA Li-SOCl₂ battery offers unmatched energy density, a 10-year shelf life with >90% retained capacity, and compliance with UL, IEC, and RoHS standards, making it the premier choice for ultra-compact transmitters, sensing modules, and life-saving emergency instrumentation in the tightest spaces.