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BatteryClerk Prime FAST 1-2 day shipping to most of Canada
BatteryClerk Prime FAST 1-2 day shipping to most of Canada

Alarm Batteries

Ensure your property stays protected, even during a power outage, with BatteryClerk’s reliable backup replacement alarm batteries. Our selection includes high-quality, compatible OEM batteries designed to fit top alarm brands like ADT, Acme, and Ademco, so you can trust your security system to perform when it matters most. Don’t let a dead battery leave you vulnerable—explore our collection today and keep your alarm system running smoothly 24/7!

  • Zareba SP3 6V 4.5Ah Alarm Replacement Battery
    $10.29 - $10.29
    $10.29
    $10.29 - $10.29
    $10.29

    AJC Battery Compatible with Zareba SP3 6V 4.5Ah Alarm Battery

    In stock

    Information 6V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed ...

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    $10.29 - $10.29
    $10.29
    $10.29 - $10.29
    $10.29
  • UltraTech UT-1240 12V 9Ah Alarm Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with UltraTech UT-1240 12V 9Ah Alarm Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • UltraTech UT12180 12V 9Ah Alarm Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with UltraTech UT12180 12V 9Ah Alarm Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • UltraTech UT-12180 12V 18Ah Alarm Replacement Battery
    $57.19 - $65.49
    $57.19 - $65.49
    $57.19 - $65.49
    $57.19

    AJC Battery Compatible with UltraTech UT-12180 12V 18Ah Alarm Battery

    In stock

    $57.19 - $65.49
    $57.19 - $65.49
    $57.19 - $65.49
    $57.19
  • UltraTech UT-12180 12V 22Ah Alarm Replacement Battery
    $65.49 - $65.49
    $65.49
    $65.49 - $65.49
    $65.49

    AJC Battery Compatible with UltraTech UT-12180 12V 22Ah Alarm Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $65.49 - $65.49
    $65.49
    $65.49 - $65.49
    $65.49
  • UltraTech IM-1240 12V 9Ah Alarm Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with UltraTech IM-1240 12V 9Ah Alarm Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • UltraTech IM-12180 12V 9Ah Alarm Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with UltraTech IM-12180 12V 9Ah Alarm Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • Simplex 2350 12V 8Ah Alarm Replacement Battery
    $29.19 - $29.19
    $29.19
    $29.19 - $29.19
    $29.19

    AJC Battery Compatible with Simplex 2350 12V 8Ah Alarm Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $29.19 - $29.19
    $29.19
    $29.19 - $29.19
    $29.19
  • Simplex 20819276 12V 35Ah Alarm Replacement Battery
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29

    AJC Battery Compatible with Simplex 20819276 12V 35Ah Alarm Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29
  • Simplex 2081-9276 12V 22Ah Alarm Replacement Battery
    $65.49 - $65.49
    $65.49
    $65.49 - $65.49
    $65.49

    AJC Battery Compatible with Simplex 2081-9276 12V 22Ah Alarm Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $65.49 - $65.49
    $65.49
    $65.49 - $65.49
    $65.49
  • Simplex 20819276 12V 1.3Ah Alarm Replacement Battery
    $12.49 - $12.49
    $12.49
    $12.49 - $12.49
    $12.49

    AJC Battery Compatible with Simplex 20819276 12V 1.3Ah Alarm Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $12.49 - $12.49
    $12.49
    $12.49 - $12.49
    $12.49
  • Simplex 20819275 12V 22Ah Alarm Replacement Battery
    $65.49 - $65.49
    $65.49
    $65.49 - $65.49
    $65.49

    AJC Battery Compatible with Simplex 20819275 12V 22Ah Alarm Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $65.49 - $65.49
    $65.49
    $65.49 - $65.49
    $65.49
  • Simplex 2081-9274 12V 22Ah Alarm Replacement Battery
    $65.49 - $65.49
    $65.49
    $65.49 - $65.49
    $65.49

    AJC Battery Compatible with Simplex 2081-9274 12V 22Ah Alarm Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $65.49 - $65.49
    $65.49
    $65.49 - $65.49
    $65.49
  • Simplex 2081-9274 12V 18Ah Alarm Replacement Battery
    $57.19 - $65.49
    $57.19 - $65.49
    $57.19 - $65.49
    $57.19

    AJC Battery Compatible with Simplex 2081-9274 12V 18Ah Alarm Battery

    In stock

    $57.19 - $65.49
    $57.19 - $65.49
    $57.19 - $65.49
    $57.19
  • Simplex 20819274 12V 12Ah Alarm Replacement Battery
    $38.69 - $46.89
    $38.69 - $46.89
    $38.69 - $46.89
    $38.69

    AJC Battery Compatible with Simplex 20819274 12V 12Ah Alarm Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $38.69 - $46.89
    $38.69 - $46.89
    $38.69 - $46.89
    $38.69
  • Simplex 20819274 12V 10Ah Alarm Replacement Battery
    $37.49 - $46.89
    $37.49 - $46.89
    $37.49 - $46.89
    $37.49

    AJC Battery Compatible with Simplex 20819274 12V 10Ah Alarm Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $37.49 - $46.89
    $37.49 - $46.89
    $37.49 - $46.89
    $37.49
  • Simplex 2081-9272 12V 22Ah Alarm Replacement Battery
    $65.49 - $65.49
    $65.49
    $65.49 - $65.49
    $65.49

    AJC Battery Compatible with Simplex 2081-9272 12V 22Ah Alarm Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $65.49 - $65.49
    $65.49
    $65.49 - $65.49
    $65.49
  • Simplex 2081-9272 12V 18Ah Alarm Replacement Battery
    $57.19 - $65.49
    $57.19 - $65.49
    $57.19 - $65.49
    $57.19

    AJC Battery Compatible with Simplex 2081-9272 12V 18Ah Alarm Battery

    In stock

    $57.19 - $65.49
    $57.19 - $65.49
    $57.19 - $65.49
    $57.19
  • Simplex 20013072 12V 12Ah Alarm Replacement Battery
    $38.69 - $46.89
    $38.69 - $46.89
    $38.69 - $46.89
    $38.69

    AJC Battery Compatible with Simplex 20013072 12V 12Ah Alarm Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $38.69 - $46.89
    $38.69 - $46.89
    $38.69 - $46.89
    $38.69
  • Simplex 20013072 12V 10Ah Alarm Replacement Battery
    $37.49 - $46.89
    $37.49 - $46.89
    $37.49 - $46.89
    $37.49

    AJC Battery Compatible with Simplex 20013072 12V 10Ah Alarm Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $37.49 - $46.89
    $37.49 - $46.89
    $37.49 - $46.89
    $37.49
  • Simplex 112-133 12V 10Ah Alarm Replacement Battery
    $37.49 - $46.89
    $37.49 - $46.89
    $37.49 - $46.89
    $37.49

    AJC Battery Compatible with Simplex 112-133 12V 10Ah Alarm Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $37.49 - $46.89
    $37.49 - $46.89
    $37.49 - $46.89
    $37.49
  • Simplex 112-113 12V 12Ah Alarm Replacement Battery
    $38.69 - $46.89
    $38.69 - $46.89
    $38.69 - $46.89
    $38.69

    AJC Battery Compatible with Simplex 112-113 12V 12Ah Alarm Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $38.69 - $46.89
    $38.69 - $46.89
    $38.69 - $46.89
    $38.69
  • Simplex 112-113 12V 10Ah Alarm Replacement Battery
    $37.49 - $46.89
    $37.49 - $46.89
    $37.49 - $46.89
    $37.49

    AJC Battery Compatible with Simplex 112-113 12V 10Ah Alarm Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $37.49 - $46.89
    $37.49 - $46.89
    $37.49 - $46.89
    $37.49
  • Simplex 112-113 12V 100Ah Alarm Replacement Battery
    $286.99 - $286.99
    $286.99
    $286.99 - $286.99
    $286.99

    AJC Battery Compatible with Simplex 112-113 12V 100Ah Alarm Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $286.99 - $286.99
    $286.99
    $286.99 - $286.99
    $286.99