Tadiran TL-4920/V Lithium Battery C 8.5 Ah 3.6V XOL Custom Battery Pack with Leads

Tadiran Disposal Guide for Lithium Batteries

Lithium Battery Information Sheet

Tadiran TL-4920/V Spec Sheet

Product Overview

The Tadiran TL‑4920/V is a 3.6V Lithium Thionyl Chloride (LiSOCl₂) non‑rechargeable primary cell designed for ultra‑long‑life, low‑drain industrial applications that require stable voltage, high energy density, and dependable multi‑year performance. As part of Tadiran’s TL‑49xx bobbin‑type family, the TL‑4920/V is engineered for vertical mounting, making it ideal for compact PCBs and embedded systems where board orientation and mechanical stability matter.

Chemistry and Long‑Duration Performance

The TL‑4920/V uses Tadiran’s bobbin‑type LiSOCl₂ primary chemistry, optimized for applications with low continuous current draw and long standby periods. Key performance characteristics include:

• 3.6V nominal voltage with a flat, predictable discharge curve

• Extremely low self‑discharge, typically under 1% per year

• High energy density for compact, long‑duration system designs

• Wide operating temperature range, often −55°C to +85°C

• 10–20+ year service life, depending on load and environmental conditions

This chemistry is ideal for devices that must operate reliably for years without maintenance or battery replacement.

Electrical Behavior in Low‑Drain Systems

The TL‑4920/V is optimized for low continuous currents, making it well‑suited for long‑duration monitoring, metering, and sensing applications. Electrical advantages include:

• Stable 3.6V output for low‑power electronics

• Predictable, linear discharge characteristics

• Minimal voltage drop during long‑term standby

• High energy capacity for multi‑year deployments

• Reliable performance in extreme environmental conditions

This performance profile supports decade‑long, maintenance‑free operation in sealed or remote systems.

Mechanical and Environmental Durability

The TL‑4920/V is engineered for rugged industrial and outdoor environments:

• Hermetically sealed stainless‑steel housing

• Vertical‑mount construction for PCB stability

• High resistance to shock, vibration, and mechanical stress

• Excellent performance in extreme cold and heat

• Long shelf life suitable for extended storage

• Proven reliability in remote or inaccessible installations

Its vertical‑mount design is especially valuable in compact electronics where footprint and mechanical orientation are critical.

Typical Applications

The TL‑4920/V is widely used in systems requiring long‑life, low‑drain primary power, including:

• Utility metering (gas, water, heat meters)

• Industrial IoT sensors and wireless modules

• Smart city and environmental monitoring nodes

• Asset tracking and geolocation beacons

• Oil & gas instrumentation and pipeline monitoring

• Security and intrusion detection systems

• SCADA and remote telemetry equipment

• Memory backup and RTC power

These applications rely on the TL‑4920/V’s ability to deliver years of stable, maintenance‑free performance.

Why Engineers Choose the TL‑4920/V

• Ultra‑long‑life LiSOCl₂ primary chemistry

• Vertical‑mount package for PCB‑optimized designs

• High energy density in a compact form factor

• Stable 3.6V output for low‑drain electronics

• Exceptional temperature resilience for harsh environments

• Rugged, maintenance‑free construction

• Proven reliability in industrial, remote, and mission‑critical systems

The TL‑4920/V is selected when designers need a high‑reliability, non‑rechargeable lithium cell that supports long‑term autonomous operation in a vertical PCB configuration.

Product Description