Overview

The CSB HR1221W is a compact, high-rate 12V, 5.28Ah valve-regulated lead-acid (VRLA) battery engineered for applications requiring strong bursts of power in a short time. Featuring advanced Absorbent Glass Mat (AGM) technology, it delivers maintenance-free, leak-proof performance with excellent gas recombination efficiency. Designed to provide reliable high-discharge output, it is ideal for UPS systems, emergency lighting, security systems, medical equipment, and other backup power applications where space is limited but high performance is essential. Its durable construction, low self-discharge, and consistent operation across a wide temperature range make it a trusted choice for critical standby power needs.