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Small cylindrical lithium battery with wire leads and connector, 17 mm diameter, 26 mm length

DUSLAN

DUSLAN Siemens A5E00331143 PCU50 3V Lithium standard battery

SKU CH-T0WT-TF0A2

3 V lithium cell with wire-lead connector powers memory backup in Siemens Simatic BOX, Panel, Microbox and PG industrial PCs

  • Battery typeA5E00331143
  • Reliable PLC backup power with 950 mAh lithium capacity
  • Wide operating range from -60 °C to +85 °C
  • Direct-fit wire leads with connector for simple installation
  • Compact 17 mm diameter by 26 mm length fits tight enclosures
  • Compatible with Simatic BOX PC 620, 627, 820, 840 and Panel PC 577, 670, 677

Siemens PLC Battery Replacement

This 3 V lithium cell replaces the Siemens A5E00331143 PCU50 battery used for memory backup in Simatic BOX PC, Panel PC, Microbox PC and PG programmer units. It supplies 950 mAh capacity with wire leads and a connector for direct board attachment.

Critical Fit Verification

The single specification that decides compatibility is the exact part number A5E00331143; the cell measures 17 mm diameter by 26 mm length and weighs 54 g, matching the original mechanical and electrical footprint.

Industrial Temperature Performance

Rated for continuous operation from -60 °C to +85 °C, the lithium chemistry maintains stable voltage with negligible self-discharge and no audible noise in typical PLC backup duty.

How it compares

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

Price $14.99
Pricier than about 67% of the 10,440 comparable items (median $10.99).

Specifications

Power
Battery typeA5E00331143

Questions about this item

How long will the 950 mAh capacity keep my PLC running?

The 950 mAh cell provides long-term backup power for the real-time clock and memory in Siemens Simatic BOX PC 620, 627, 820, 840 and Panel PC 577B, 670, 677 units.

What does the wire-lead connector mean for installation?

The pre-fitted wire leads with connector plug directly into the motherboard header on compatible Simatic Microbox PC 420, 427B and PG720, 740, 760 models — no soldering required.

Will the 17 mm diameter and 26 mm length fit my device's battery compartment?

Yes, the 17 mm by 26 mm cylindrical case matches the original CR1/2AA-SWC form factor used across the listed Simatic BOX PC, Panel PC, Microbox PC and PG series.

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