Battery Replacement for SIGNALINK Fire-Link II Fire Alarm by innoVolta IVC541866-3S225PIA Made in USA


  • Replacement Battery for SIGNALINK Fire-Link II Fire Alarm
  • ISD-2500 Series (Horn Only) or ISD-2500 Series (Horn + LED Strobe).

Meet Mandated Security Industrial Requirements:

  • Selected Security Industrial Grade, Ultra Long Life, NMC Power Cells
  • In-Cell Construction by Thermal Runaway Safer Material up to 210 Degree C
  • Individual Cell Carries UL 1642 and RoHS Certificates
  • Build-in Reinforced Insulation between Cells
  • Build-in Industrial Grade PCM (Protections: Short Circuit, Over-Charge, Over-Discharge)
  • Never worry about an explosion owing to an accidental short circuit or a human mishandling

High Performance:

  • 11.1 V 2,200 mAh
  • Short Circuit Protection Current (up to 5 A)

Ultra Long Life:

  • Real-Time Tested Cycle Life (individual cells): Over 1,000 Deep Cycles
  • Excellent Cell Matching ACIR @1 kHz < 2 mOhm/bin
  • Excellent Cell Matching Capacity < 20 mAh/bin


  • Assembled with 2.5 mm pitch 2-circuit AMP 3-640440-3 connector
  • Avoiding any accidental inverse polarity of power connection because AMP 3-640440-3 connector is polarized.
  • 5″ long flexible wires rated UL 1007, 22AWG, 80 degC, 300V, VW-1


This is the battery replacement dedicated to replace the aged original battery for SIGNALINK Fire-Link II Fire Alarm,

ISD-2500 Series (Horn Only) or ISD-2500 Series (Horn + LED Strobe).

Note: The original battery is rated as 11.1 V 2,200 mAh

Please contact us if you own a different mandated Fire Alarm and can’t find a compatible battery for replacement! 

To know about innoVolta’s product capability, please visit


  • Brand: innoVolta USA
  • Model: IVC541866-3S225PIA
  • Nominal Voltage: 11.1 V
  • Capacity: 2,200 mAh
  • Energy: 24.4 Wh
  • Charge Current: 1.1 A (Standard)
  • Short Circuit Protection Current: up to 5 A
  • Battery Pack Size (maximum): 55.0 mm Wide * 19.0 mm High * 68.5 mm Long
  • Weight: 137 g (average)
  • Connector: 2.50 mm pitch 2-circuit AMP 3-640440-3 connector
  • Wire: Red/Black, 5″ long, UL 1007,  22AWG, 80 degC, 300V, VW-1


Additional information

Weight 0.50 lbs

You may also like…