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BatteryClerk Prime FAST 1-2 day shipping to most of the USA
BatteryClerk Prime FAST 1-2 day shipping to most of the USA

Alarm Batteries

Replacement Alarm Batteries ensure your alarm system continues to operate even during a power outage or when the electricity is cut. Browse our current selection of replacement Alarm Batteries for some of the top alarm brands like ADT, Honeywell and Ademco.

  • Original price $18.59 - Original price $18.59
    Original price
    $18.59
    $18.59 - $18.59
    Current price $18.59

    Silent Knight 12V 7Ah Alarm Replacement Battery

    In stock

    Info AJC® replacement compatible with Silent Knight All Alarm Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance free...

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    Original price $18.59 - Original price $18.59
    Original price
    $18.59
    $18.59 - $18.59
    Current price $18.59
  • Original price $18.59 - Original price $18.59
    Original price
    $18.59
    $18.59 - $18.59
    Current price $18.59

    Silent Knight SK-5208 12V 7Ah Alarm Replacement Battery

    In stock

    Info AJC® replacement compatible with Silent Knight SK-5208 Alarm Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance ...

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    Original price $18.59 - Original price $18.59
    Original price
    $18.59
    $18.59 - $18.59
    Current price $18.59
  • Original price $18.59 - Original price $18.59
    Original price
    $18.59
    $18.59 - $18.59
    Current price $18.59

    Silent Knight 6712 12V 7Ah Alarm Replacement Battery

    In stock

    Info AJC® replacement compatible with Silent Knight 6712 Alarm Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance fre...

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    Original price $18.59 - Original price $18.59
    Original price
    $18.59
    $18.59 - $18.59
    Current price $18.59
  • Original price $16.99 - Original price $16.99
    Original price
    $16.99
    $16.99 - $16.99
    Current price $16.99

    Silent Knight N5HR 12V 5Ah Alarm Replacement Battery

    In stock

    Info AJC® replacement compatible with Silent Knight N5HR Alarm Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance fre...

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    Original price $16.99 - Original price $16.99
    Original price
    $16.99
    $16.99 - $16.99
    Current price $16.99
  • Original price $16.99 - Original price $16.99
    Original price
    $16.99
    $16.99 - $16.99
    Current price $16.99

    Silent Knight ENERJET 12V 5Ah Alarm Replacement Battery

    In stock

    Info AJC® replacement compatible with Silent Knight ENERJET Alarm Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance ...

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    Original price $16.99 - Original price $16.99
    Original price
    $16.99
    $16.99 - $16.99
    Current price $16.99
  • Original price $18.59 - Original price $18.59
    Original price
    $18.59
    $18.59 - $18.59
    Current price $18.59

    Silent Knight 5395 12V 7Ah Alarm Replacement Battery

    In stock

    Info AJC® replacement compatible with Silent Knight 5395 Alarm Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance fre...

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    Original price $18.59 - Original price $18.59
    Original price
    $18.59
    $18.59 - $18.59
    Current price $18.59
  • Original price $16.99 - Original price $16.99
    Original price
    $16.99
    $16.99 - $16.99
    Current price $16.99

    Silent Knight S121 12V 5Ah Alarm Replacement Battery

    In stock

    Info AJC® replacement compatible with Silent Knight S121 Alarm Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance fre...

    View full details
    Original price $16.99 - Original price $16.99
    Original price
    $16.99
    $16.99 - $16.99
    Current price $16.99
  • Original price $16.99 - Original price $16.99
    Original price
    $16.99
    $16.99 - $16.99
    Current price $16.99

    Silent Knight N7HR 12V 5Ah Alarm Replacement Battery

    In stock

    Info AJC® replacement compatible with Silent Knight N7HR Alarm Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance fre...

    View full details
    Original price $16.99 - Original price $16.99
    Original price
    $16.99
    $16.99 - $16.99
    Current price $16.99
  • Original price $16.99 - Original price $16.99
    Original price
    $16.99
    $16.99 - $16.99
    Current price $16.99

    Silent Knight 712 12V 5Ah Alarm Replacement Battery

    In stock

    Info AJC® replacement compatible with Silent Knight 712 Alarm Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance free...

    View full details
    Original price $16.99 - Original price $16.99
    Original price
    $16.99
    $16.99 - $16.99
    Current price $16.99
  • Original price $16.99 - Original price $16.99
    Original price
    $16.99
    $16.99 - $16.99
    Current price $16.99

    Silent Knight 680 12V 5Ah Alarm Replacement Battery

    In stock

    Info AJC® replacement compatible with Silent Knight 680 Alarm Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance free...

    View full details
    Original price $16.99 - Original price $16.99
    Original price
    $16.99
    $16.99 - $16.99
    Current price $16.99
  • Original price $16.99 - Original price $16.99
    Original price
    $16.99
    $16.99 - $16.99
    Current price $16.99

    Silent Knight S122 12V 5Ah Alarm Replacement Battery

    In stock

    Info AJC® replacement compatible with Silent Knight S122 Alarm Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance fre...

    View full details
    Original price $16.99 - Original price $16.99
    Original price
    $16.99
    $16.99 - $16.99
    Current price $16.99
  • Original price $16.49 - Original price $16.49
    Original price
    $16.49
    $16.49 - $16.49
    Current price $16.49

    Silent Knight S122 12V 4.5Ah Alarm Replacement Battery

    In stock

    Info AJC® replacement compatible with Silent Knight S122 Alarm Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance fre...

    View full details
    Original price $16.49 - Original price $16.49
    Original price
    $16.49
    $16.49 - $16.49
    Current price $16.49
  • Original price $16.49 - Original price $16.49
    Original price
    $16.49
    $16.49 - $16.49
    Current price $16.49

    Silent Knight LCR12V4PF 12V 4.5Ah Alarm Replacement Battery

    In stock

    Info AJC® replacement compatible with Silent Knight LCR12V4PF Alarm Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenanc...

    View full details
    Original price $16.49 - Original price $16.49
    Original price
    $16.49
    $16.49 - $16.49
    Current price $16.49
  • Original price $16.99 - Original price $16.99
    Original price
    $16.99
    $16.99 - $16.99
    Current price $16.99

    Silent Knight LCR12V4PF 12V 5Ah Alarm Replacement Battery

    In stock

    Info AJC® replacement compatible with Silent Knight LCR12V4PF Alarm Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenanc...

    View full details
    Original price $16.99 - Original price $16.99
    Original price
    $16.99
    $16.99 - $16.99
    Current price $16.99
  • Original price $21.79 - Original price $21.79
    Original price
    $21.79
    $21.79 - $21.79
    Current price $21.79

    Silent Knight 6712 12V 8Ah Alarm Replacement Battery

    In stock

    Info AJC® replacement compatible with Silent Knight 6712 Alarm Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance fre...

    View full details
    Original price $21.79 - Original price $21.79
    Original price
    $21.79
    $21.79 - $21.79
    Current price $21.79
  • Original price $8.59 - Original price $8.59
    Original price
    $8.59
    $8.59 - $8.59
    Current price $8.59

    Silent Knight 5207 6V 4.5Ah Alarm Replacement Battery

    In stock

    Info AJC® replacement compatible with Silent Knight 5207 Alarm Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance fre...

    View full details
    Original price $8.59 - Original price $8.59
    Original price
    $8.59
    $8.59 - $8.59
    Current price $8.59
  • Original price $38.89 - Original price $38.89
    Original price
    $38.89
    $38.89 - $38.89
    Current price $38.89

    Silent Knight 5204 12V 12Ah Alarm Replacement Battery

    In stock

    Info AJC® replacement compatible with Silent Knight 5204 Alarm Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance fre...

    View full details
    Original price $38.89 - Original price $38.89
    Original price
    $38.89
    $38.89 - $38.89
    Current price $38.89
  • Original price $16.99 - Original price $16.99
    Original price
    $16.99
    $16.99 - $16.99
    Current price $16.99

    Silent Knight 5107 12V 5Ah Alarm Replacement Battery

    In stock

    Info AJC® replacement compatible with Silent Knight 5107 Alarm Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance fre...

    View full details
    Original price $16.99 - Original price $16.99
    Original price
    $16.99
    $16.99 - $16.99
    Current price $16.99
  • Original price $21.79 - Original price $21.79
    Original price
    $21.79
    $21.79 - $21.79
    Current price $21.79

    Silent Knight 5104B 12V 8Ah Alarm Replacement Battery

    In stock

    Info AJC® replacement compatible with Silent Knight 5104B Alarm Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance fr...

    View full details
    Original price $21.79 - Original price $21.79
    Original price
    $21.79
    $21.79 - $21.79
    Current price $21.79