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Cylindrical 1/2 AA lithium battery with button top, metallic grey finish

Tadiran

Tadiran TL-5902/S 3.6V 1/2 AA 1.2Ah lithium standard battery

SKU CH-GR83-2V3JX

A 3.6 V 1/2 AA lithium thionyl chloride cell delivering 1.2 Ah capacity, 50 mA continuous current, 100 mA pulse capability and a 10-year shelf life across -60 °C to +85 °C

  • High operating voltage stable at 3.6V
  • 2Ah capacity among the highest available
  • 10+ year shelf life with less than 1% annual self-discharge
  • Operates from -60°C to +85°C in humid conditions
  • Button-top 1/2 AA size fits compatible devices

Tadiran TL-5902/S 3.6V 1/2 AA 1.2Ah lithium battery

The Tadiran TL-5902/S is a 3.6V 1/2 AA lithium thionyl chloride cell delivering 1.2 Ah capacity with a button-top termination. It suits industrial electronics, utility metering, security sensors and memory-backup circuits that require long-term primary power in a compact ER14250 form factor. The chemistry provides a stable high operating voltage across most of the discharge curve and a shelf life exceeding 10 years with less than 1% annual self-discharge at +20°C.

Integration into a 14.5 mm by 25.2 mm footprint

The cylindrical cell measures 14.5 mm in diameter and 25.2 mm in height, weighing 9.6 g, so it fits standard 1/2 AA holders without adapter hardware. Continuous loads must stay at or below 50 mA while pulse demands up to 100 mA are supported, freeing the designer from adding parallel cells for brief current spikes. Operation is rated from -60°C to +85°C, allowing outdoor or cold-chain deployment without thermal management, and the inorganic electrolyte is non-flammable and non-pressurised at ambient temperature.

Direct replacements simplify procurement

The TL-5902/S is compatible with Tadiran TL-4902, TL-2150, TL-5101, TL-5902 and TL-5111 models as well as Saft LS-14250 and LS-14250c, Toshiba ER3v and Sonnenschein SL-350/S, SL-750/S and SL-150/S references. This cross-reference list lets purchasing consolidate stock around a single part number instead of qualifying multiple vendor codes. The cell is not rechargeable; attempting to recharge it will cause permanent damage and safety risk.

How it compares

Measured against everything we stock in Household Batteries & Chargers, at today’s prices. Recalculated every night.

Price $7.99
Cheaper than about 85% of the 10,440 comparable items (median $10.99).

Specifications

No published specifications for this item yet.

Questions about this item

What continuous current can the TL-5902/S sustain without exceeding its 50 mA limit?

The maximum recommended continuous current is 50 mA; drawing more will reduce capacity and may damage the cell.

How much does the cell heat up during all-day operation at the rated 50 mA draw?

Lithium thionyl chloride chemistry generates minimal heat at 50 mA; the battery operates reliably across the -60 °C to +85 °C range.

Which devices already accept the 14.5 mm diameter button-top form factor?

Compatible models include Tadiran TL-4902, TL-2150, TL-5101, TL-5111, TL-5902, Saft LS-14250 and LS-14250c, Toshiba ER3v, and Sonnenschein SL-350/S, SL-750/S, SL-150/S.

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