The Panasonic BR‑2/3AGCT4A is a 6 V primary (non-rechargeable) lithium battery pack composed of four BR‑2/3A cells in series, complete with connector leads. It's engineered primarily for industrial memory backup in CNC systems, programmable logic controllers (PLCs), and automation controllers, notably serving as a replacement for FANUC part A98L‑0031‑0025. It delivers stable long-term voltage, low self-discharge, and proven reliability under harsh conditions.