ReplacementBatteryfortheABBTA521-7.2V3600mAhLithium

This 7.2V 3600mAh lithium thionyl chloride (Li-SOCl2) battery is a direct replacement memory-backup cell for the ABB TA521 application. This higher-capacity pack serves ABB control equipment that specifies a 7.2V backup battery. It is built as a form-fit-function replacement for the original backup battery, so it installs without rewiring, reprogramming, or controller reconfiguration, and protects stored programs, RAM, and real-time clock data during power loss.

This battery cross-references to ABB 3HAC020536-003, 3HAC020536-005, 3HAC020536-006, 3HAC020536-007, 3HAC020536-011, and 3HAC020536-012, plus 34 additional cross-referenced part numbers. Match your existing OEM battery by part number or by the equipment it powers to confirm fit. Verify your equipment calls for the 7.2V pack rather than the 3V TA521 coin cell before ordering. Lithium thionyl chloride primary cells deliver high energy density and a very low self-discharge rate, holding a stable 7.2V nominal output over long standby periods, which suits low-drain memory-backup duty.

Technical Specifications