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Black rectangular Li-SOCl2 battery pack, two cells, 51 by 37 by 21.5 mm

Cameron & Co

Cameron & Co DS-CS-DSG990BT 3.6V 16000mAh Li-SOCl2 surveillance accessory

SKU CH-ZH3C-APY71

Non-rechargeable Li-SOCl2 battery delivers 3.6V 16000mAh for FANSO MCS-720B, MCS-740 and TYCO PG9901 sirens

  • TypeBattery
  • Li-SOCl2 chemistry provides long shelf life for standby security devices
  • 6 V 16000 mAh capacity powers sirens through extended alarm events
  • Direct replacement for FANSO MCS-720B and MCS-740 models
  • Compatible with TYCO PG9901 and Visonic 103-304742 part numbers
  • Compact 51 x 37 x 21.5 mm twin-cell pack fits existing enclosures

Purpose-built power for security sirens

This 3.6 V 16000 mAh lithium-thionyl chloride pack replaces the original cell in FANSO MCS-720B and MCS-740 sirens, TYCO Burg Siren PG9901 and compatible Visonic and DSC wireless indoor models. It is a primary, non-rechargeable unit designed for long-term standby in life-safety devices.

Twin-cell construction with direct-fit dimensions

Two black cells measuring 51.00 x 37.00 x 21.50 mm each slide into the existing battery compartment without adapters or wiring changes. The OEM-compatible layout matches the original 2XER18505M and 103-304742 part numbers, so installers can swap the pack during routine maintenance without tools.

Primary chemistry imposes single-use replacement

Li-SOCl2 delivers high energy density and a wide temperature range but cannot be recharged; once depleted the entire pack must be replaced. The 57.60 Wh capacity supports extended supervisory periods, yet the chemistry rules out any solar or mains trickle-charge scheme, so budgeting for periodic swap-outs is essential.

Highlights

  • Li-SOCl2 chemistry provides long shelf life for standby security devices
  • 6 V 16000 mAh capacity powers sirens through extended alarm events
  • Direct replacement for FANSO MCS-720B and MCS-740 models
  • Compatible with TYCO PG9901 and Visonic 103-304742 part numbers
  • Compact 51 x 37 x 21.5 mm twin-cell pack fits existing enclosures

Specifications

BrandCameron Sino
ModelDS-CS-DSG990BT
TypeBattery

Questions about this item

What voltage and capacity does the Li-SOCl2 pack provide?

The pack delivers 3.6 V and 16000 mAh, giving 57.60 Wh of energy for the siren.

Will the two cells fit inside the MCS-720B or PG9901 housing?

Each cell measures 51.00 x 37.00 x 21.50 mm; the pair matches the original 2XER18505M footprint.

How do I install the replacement without damaging the connector?

Power off the siren, remove the old pack, observe the polarity markings, then press the new cells in until the connector seats fully.

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