Replacement Battery for the Tadiran TL-4920 - 3.6V 8500mAh Lithium

Protect stored programs, RAM, and real-time clock data on Tadiran, Generic (IEC), Saft, Tekcell (Vitzrocell), and other industrial control systems with this 3.6V 8500mAh lithium thionyl chloride (Li-SOCl₂) direct-replacement backup battery. It is built as a form-fit-function replacement for the original memory-backup cell, so it installs without rewiring, reprogramming, or controller reconfiguration.

This battery cross-references to Tadiran TL-5920/B, Generic (IEC) ER26500, Saft LS26500, Tadiran TL-4920, Tadiran TL-2200, and Tekcell (Vitzrocell) SB-C01, giving you a single verified replacement across these part numbers. Match your existing OEM battery by part number or by the equipment it powers to confirm fit. Lithium thionyl chloride cells deliver a high energy density and an exceptionally low self-discharge rate, holding a stable 3.6V nominal output over long standby periods—ideal for the low-drain memory-backup duty this battery is built for. It is a primary (non-rechargeable) cell and should be replaced rather than recharged once depleted.

Technical specifications

• Chemistry: Lithium Thionyl Chloride (ER/TL/LS)
• Nominal voltage: 3.6V
• Capacity: 8500mAh
• Battery type: Primary (non-rechargeable)
• Application: PLC / industrial control memory backup
• Cross-references: 6 equivalent OEM part numbers