The Amptek AT6-3.3 is a 6V 3.3Ah sealed maintenance-free (SMF) rechargeable industrial battery designed for reliable performance in UPS systems, emergency lighting, toys, security devices, and other backup applications. With a durable black ABS casing, it offers high energy density, deep discharge recovery, and long service life. Its sealed lead-acid (SLA) technology ensures leak-proof operation and maintenance-free usage, making it ideal for both cyclic and standby applications.