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Twenty cylindrical 1/2AA lithium cells with black plugs in a bulk pack

TOPMAO

TOPMAO CR14250SE 1800mAh 3V 1/2AA Lithium Battery 20-Pack

SKU CH-658M-2MX1S MPN CR14250SE

A 20-pack of 3V 1/2AA lithium batteries delivering 1800mAh each for PLC backup and industrial equipment

  • TypeBatteries
  • Voltage3V
  • Amps1800mah
  • 1800mAh capacity powers equipment longer
  • 3V lithium chemistry ensures stable voltage
  • Wide -40°C to +85°C operating range
  • 20-pack supplies multiple backup units
  • 1/2AA size fits 1747-BA compatible devices

Industrial backup power

This 20-pack of TOPMAO CR14250SE lithium batteries delivers 3 V and 1800 mAh each, designed as direct replacements for FDK PLC 1747-BA cells in industrial equipment. The non-rechargeable chemistry suits CNC machine tools, servo drives, programmers, PLCs, injection moulding machines, printing machines, touch screens, electricity meters, water meters, real-time clocks and backup memory supplies.

Black-plug connector

Every cell ships with a factory-fitted black plug that matches the original 1747-BA form factor, removing the need for soldering or adapter cables during maintenance swaps. The 33.5 × 17 mm dimensions and 20-unit packaging let technicians stock spares for multiple machines without rewiring each installation.

Wide-temperature endurance

Rated for continuous operation from -40 °C to +85 °C, the chemistry maintains low self-discharge and high energy density across the extremes found in unheated factories or outdoor metering cabinets. Buyers who need rechargeable cells or a different voltage platform cannot use this pack.

Highlights

  • 1800mAh capacity powers equipment longer
  • 3V lithium chemistry ensures stable voltage
  • Wide -40°C to +85°C operating range
  • 20-pack supplies multiple backup units
  • 1/2AA size fits 1747-BA compatible devices

Specifications

TypeBatteries
BrandTOPMAO
ModelCR14250SE 1747-BA
Voltage3V
Amps1800mah

Questions about this item

How often will the 1800mAh CR14250SE cells need replacement in a PLC backup role?

These are non-rechargeable lithium batteries; once the 1800mAh capacity is depleted the cell must be replaced. Service life depends on the load of the specific PLC or CNC memory circuit.

What operating limit is reached first when the battery runs continuously in a CNC machine?

The specified temperature ceiling is +85 °C; sustained operation above that point will degrade the chemistry faster than normal discharge.

Does the pack generate noticeable heat or noise during all-day backup duty?

Lithium primary cells produce no audible noise and negligible heat under the low currents typical of real-time clock or memory backup.

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