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Rectangular lithium battery pack, grey plastic casing, two terminal contacts visible

Estry

Estry 16000mAh 3.6V Lithium Battery 2XER18505M

SKU CH-PXX6-B00CW

Replacement lithium battery with 16000mAh capacity for DSC PG9901 and PG9911 sirens

  • Battery pack size1-pack
  • Battery typeLithium
  • Battery capacity16,000 mAh
  • Battery voltage rating3.6
  • Product typeBatteries
  • Exact-match replacement for DSC siren models PG9901 and PG9911
  • 16000mAh lithium capacity delivers extended standby power for security sirens
  • Built-in overcharge, over-discharge and short-circuit protection safeguards battery life
  • Certified to ISO9001, RoHS, CE and UN38.3 safety standards
  • Compact 51.0 x 37.0 x 21.5 mm form factor fits original battery compartment

Direct replacement for DSC sirens

This 16000mAh 3.6V lithium pack matches the 2XER18505M part number used in PG9901, Burg PG9901 and PG9911 sirens. It delivers 57.6Wh in a 51.0 x 37.0 x 21.5mm form factor weighing 153.5g. Protection circuits guard against overcharge, over-discharge, over-voltage and short circuits.

Replaces original DSC packs when capacity fades

Swap this cell in when the factory battery no longer holds a full charge or triggers low-battery alerts on the panel. The jump is worth it if your siren shows reduced run-time during extended alarms or fails self-tests after prolonged mains outages. ISO9001, RoHS, CE, UN38.3 and MSDS certifications confirm compliance with the original safety envelope.

Verify model and part number before ordering

Confirm the siren label reads PG9901, Burg PG9901 or PG9911 and that the existing pack is stamped 2XER18505M. Check that the compartment accepts the 51.0 x 37.0 x 21.5mm dimensions and that the connector polarity matches the original. Only proceed when both identifiers align exactly.

How it compares

Measured against everything we stock in Alkaline & Coin Cell Batteries, at today’s prices. Recalculated every night.

Price $27.99
Pricier than about 63% of the 190 comparable items (median $18.49).

Specifications

Product
Brand nameDSC
Product typeBatteries
Power
Battery typeLithium
Battery capacity16,000 mAh
Battery voltage rating3.6
In the box
Battery pack size1-pack

Questions about this item

Will the 51.0 x 37.0 x 21.5 mm dimensions fit my PG9901 siren housing?

The pack measures 51.0 by 37.0 by 21.5 mm and weighs 153.5 g, matching the original 2XER18505M form factor for PG9901, PG9911 and Burg Siren models.

How do I install the replacement without triggering a tamper alert?

Power down the panel, open the siren cover, disconnect the old 2XER18505M pack, connect the new 3.6 V 16000 mAh unit observing polarity, then close the cover before re-arming the system.

When should I plan to replace this 57.6 Wh lithium pack again?

Expect several years of standby service; replace when the panel reports low battery or after any deep discharge, using another 2XER18505M-compatible 3.6 V 16000 mAh pack.

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