OTR Platinum AGM Heavy Duty Group 31S Truck Battery 825 CCA 3/8" Stud. This sealed Absorbent Glass Mat (AGM) battery delivers a rated 825 cold cranking amps (CCA) in a Group 31S footprint with 3/8" stud terminals, offering a clearly measurable baseline for fleet starting performance. The batterys sealed AGM construction eliminates the need for routine water service and minimizes electrolyte loss, enabling maintenance intervals aligned with modern fleet service schedules. With the 825 CCA rating, fleet managers can specify a minimum starting capacity that aligns to engine and ambient starting requirements, supporting predictable cold-start performance reporting and allowing like-for-like replacement across vehicles using Group 31S batteries and stud terminal configurations. From an operational perspective, the sealed design and low self-discharge characteristics reduce off-vehicle storage recharge cycles and simplify logistics for spare battery pools. The AGM architecture supports higher charge acceptance rates compared with traditional flooded lead-acid designs, which can shorten time required to recover state-of-charge after engine-off accessory loads or repairs that require battery recharging during depot maintenance. Sealed terminals and a robust case reduce leak and corrosion risks during handling and installation, cutting time spent on corrective maintenance tasks. The product is intended for heavy-duty truck use where a defined starting capacity, reliable terminal attachment, and sealed, maintenance-free operation are priorities for uptime. Specification highlights are presented in operational terms: a measurable 825 CCA starting capacity, Group 31S size for inventory standardization, 3/8" stud terminals for consistent connection torque and retention, and sealed AGM construction for maintenance-free service intervals and reduced storage recharge demands. These attributes support simplified inventory, predictable starting performance, and lower routine service touchpoints for fleet operations.