1425O 3.6V ER 14250 LS14250 Li-SOCL2 1/2AA 1200mAh Bateria Battery

LS14250 | Saft 1/2AA Lithium Thionyl Chloride Battery — 3.6V / 1.2Ah / Ø14.5×25mm / −60°C to +85°C / Bobbin Construction

Half the Size, Same Chemistry — Saft's 1/2AA Li-SOCl₂ Cell

The LS14250 is Saft's 1/2AA format lithium thionyl chloride cell — physically half the height of the standard AA-format LS14500 (25mm versus 50.5mm), but using identical Li-SOCl₂ chemistry. The 1/2AA format fits in space-constrained devices where the full AA length cannot be accommodated, while still delivering the 3.6V output and multi-year service life that Li-SOCl₂ is known for.

The LS14250 is not simply a shorter LS14500 — it is a distinct product designed and optimised for the specific current profiles of its target applications: low continuous drain with occasional moderate-current pulses.

Key Specifications

Bobbin Construction — Maximising Energy in a Compact Cell

The LS14250 uses bobbin electrode geometry — the construction optimised for the 1/2AA cell's specific application profile:

Concentric electrode design: The lithium anode wraps the outside of the electrode assembly; the thionyl chloride electrolyte fills the space between; the carbon cathode collector occupies the centre. This concentric arrangement maximises the volume of active material within the cell's small 14.5mm × 25mm envelope.

Maximum energy density: Bobbin construction packs more active material into the available volume than spiral-wound construction — delivering the highest possible energy density within the 1/2AA form factor.

Low-to-moderate rate optimisation: Bobbin cells are optimised for the low continuous currents (few µA for base loads) and moderate pulse currents (up to 150mA for communications and sensor readings) that characterise the LS14250's target applications.

Applications

Smart utility metering: Gas, water, and electricity meters requiring battery life matching the meter's service interval — 10 to 15 years without battery replacement in inaccessible residential or commercial meter locations.

Wireless security sensors: PIR detectors, door and window contacts, glass break sensors, and smoke detectors in wireless security systems — typically requiring 5–10 year battery life with minimal maintenance.

Industrial IoT and remote monitoring: Temperature loggers, vibration monitors, pressure sensors, and condition monitoring nodes in factories and infrastructure — deployed in locations with limited access for periodic maintenance.

Siemens SIMATIC S5 memory backup: The LS14250 is confirmed in the cross-reference table for Siemens S5 PLC memory battery applications (6ES5-980-0MA11 equivalent) — maintaining programme and data RAM in legacy S5 controllers.

Real-time clock and memory backup: Embedded systems and industrial controllers requiring stable 3.6V backup for RTC and SRAM — where the 1/2AA form factor fits the PCB-mounted battery holder directly.

FAQ

Q1: What is the maximum continuous and pulse current for LS14250?

The LS14250 bobbin construction supports a few µA continuous base load and periodic pulses up to approximately 5–150mA for short durations. Exceeding 150mA pulse current causes excessive voltage drop on the bobbin cell's higher internal resistance — size up to a spiral-wound cell or add a supercapacitor to buffer higher pulse demands.

Q2: How does LS14250 (1/2AA) compare to LS14500 (AA) in the same chemistry?

LS14250 = 1.2Ah at 3.6V, Ø14.5×25mm. LS14500 = 2.6Ah at 3.6V, Ø14.5×50.5mm. The LS14250 offers exactly half the height and approximately half the capacity. Select LS14250 where the 25mm 1/2AA length fits the available space; select LS14500 where the full 50.5mm AA height can be accommodated and the higher 2.6Ah capacity is needed.

Q3: Does LS14250 suffer from passivation voltage delay, and does it matter for memory backup applications?

Yes — after extended storage, Li-SOCl₂ cells including LS14250 develop a passivation layer that briefly suppresses voltage on initial discharge. For memory backup applications drawing µA or single-mA levels, this is typically not problematic — the memory load is so light that voltage quickly recovers. For applications starting with a higher-current demand immediately on battery connection, a brief conditioning discharge or supercapacitor buffer eliminates the passivation effect.

Q4: What are the shipping requirements for LS14250?

LS14250 contains lithium thionyl chloride — classified as Class 9 hazardous material for air transport. Ground shipping follows standard lithium primary battery regulations. Quantities above the exemption limits require UN3090/UN3091 hazardous goods declaration for air freight — coordinate with the carrier for correct labelling and packaging when ordering in bulk.