Tadiran TL-5151 MBU Series Lithium Battery 1/2 AA 0.7 Ah 3.6V

Tadiran Disposal Guide for Lithium Batteries

Lithium Battery Information Sheet

Tadiran TL-5151 Spec Sheet

Product Overview

The Tadiran TL‑5151 is a 3.6V Lithium Thionyl Chloride (LiSOCl₂) non‑rechargeable primary cell engineered for ultra‑long‑life, low‑drain industrial applications that demand exceptional reliability, stable voltage, and multi‑decade operating life. As part of Tadiran’s TL‑series of bobbin‑type cells, the TL‑5151 delivers very low self‑discharge, high energy density, and excellent performance in extreme temperatures, making it a preferred choice for remote, mission‑critical, and maintenance‑restricted systems.

Chemistry and Performance Characteristics

The TL‑5151 uses Tadiran’s bobbin‑type LiSOCl₂ primary chemistry, optimized for applications requiring long‑term, low‑current operation. Key characteristics include:

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

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

• High energy density for compact, long‑life designs

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

• 10–20+ year operational life, depending on load profile

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

Electrical Behavior in Low‑Drain Systems

The TL‑5151 is engineered for low continuous currents, making it ideal for long‑duration standby applications. Electrical advantages include:

• Stable 3.6V output for low‑drain electronics

• Minimal voltage drop during long‑term standby

• High energy capacity for multi‑year deployments

• Predictable, linear discharge characteristics

• Reliable operation in extreme environmental conditions

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

Mechanical and Environmental Durability

The TL‑5151 is built for rugged industrial and outdoor environments:

• Hermetically sealed stainless‑steel housing

• 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 construction supports mission‑critical deployments where battery failure is not an option.

Typical Applications

The TL‑5151 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 infrastructure and environmental monitoring

• Asset tracking and geolocation beacons

• Oil & gas instrumentation and pipeline monitoring

• Security and intrusion detection systems

• SCADA and remote telemetry nodes

• Memory backup and RTC power

These applications benefit from the TL‑5151’s ability to deliver years of stable, maintenance‑free performance.

Why Engineers Choose the TL‑5151

• Ultra‑long‑life LiSOCl₂ primary chemistry

• High energy density in a compact form factor

• Stable 3.6V output for low‑drain electronics

• Exceptional temperature resilience

• Rugged, maintenance‑free construction

• Proven reliability in industrial and remote systems

The TL‑5151 is selected when designers need a high‑reliability, non‑rechargeable lithium cell capable of powering autonomous devices for a decade or more.

Product Description