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

Emergency Light Batteries

Ensure your building is equipped to handle any power outage with reliable emergency light batteries from BatteryClerk. We offer a wide selection of high-quality replacement batteries designed to keep your emergency lights shining bright when it matters most. Our batteries meet rigorous safety standards and are compatible with all major emergency lighting brands. With competitive prices, expert advice, and fast shipping, BatteryClerk makes it easy to keep your building safe and compliant.

  • Big Beam ETXFLD 12V 35Ah Emergency Light Replacement Battery
    $101.59 - $101.59
    $101.59
    $101.59 - $101.59
    $101.59

    AJC Battery Compatible with Big Beam ETXFLD 12V 35Ah Emergency Light 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
    $101.59 - $101.59
    $101.59
    $101.59 - $101.59
    $101.59
  • Big Beam Windsor 6 12V 200Ah Emergency Light Replacement Battery
    $742.09 - $742.09
    $742.09
    $742.09 - $742.09
    $742.09

    UPG Battery Compatible with Big Beam Windsor 6 12V 200Ah Emergency Light Battery

    AJC® Brand replacement compatible with a Big Beam Windsor 6 Emergency Light Battery Voltage: 12V (12 Volts) Capacity: 200Ah (200000mAh) Terminals:...

    View full details
    $742.09 - $742.09
    $742.09
    $742.09 - $742.09
    $742.09
  • Big Beam H2ECXL 12V 35Ah Emergency Light Replacement Battery
    $101.59 - $101.59
    $101.59
    $101.59 - $101.59
    $101.59

    AJC Battery Compatible with Big Beam H2ECXL 12V 35Ah Emergency Light 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
    $101.59 - $101.59
    $101.59
    $101.59 - $101.59
    $101.59
  • Big Beam ETX 12V 35Ah Emergency Light Replacement Battery
    $101.59 - $101.59
    $101.59
    $101.59 - $101.59
    $101.59

    AJC Battery Compatible with Big Beam ETX 12V 35Ah Emergency Light 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
    $101.59 - $101.59
    $101.59
    $101.59 - $101.59
    $101.59
  • Big Beam E4XL 12V 35Ah Emergency Light Replacement Battery
    $101.59 - $101.59
    $101.59
    $101.59 - $101.59
    $101.59

    AJC Battery Compatible with Big Beam E4XL 12V 35Ah Emergency Light 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
    $101.59 - $101.59
    $101.59
    $101.59 - $101.59
    $101.59
  • Big Beam COM 12V 35Ah Emergency Light Replacement Battery
    $101.59 - $101.59
    $101.59
    $101.59 - $101.59
    $101.59

    AJC Battery Compatible with Big Beam COM 12V 35Ah Emergency Light 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
    $101.59 - $101.59
    $101.59
    $101.59 - $101.59
    $101.59
  • Best Technologies RMR-16-WP 12V 7Ah Emergency Light Replacement Battery
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99

    AJC Battery Compatible with Best Technologies RMR-16-WP 12V 7Ah Emergency Light 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
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99
  • Big Beam 2ESDX 12V 18Ah Emergency Light Replacement Battery
    $53.39 - $58.99
    $53.39 - $58.99
    $53.39 - $58.99
    $53.39

    AJC Battery Compatible with Big Beam 2ESDX 12V 18Ah Emergency Light 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
    $53.39 - $58.99
    $53.39 - $58.99
    $53.39 - $58.99
    $53.39
  • Big Beam ETXFL 12V 35Ah Emergency Light Replacement Battery
    $101.59 - $101.59
    $101.59
    $101.59 - $101.59
    $101.59

    AJC Battery Compatible with Big Beam ETXFL 12V 35Ah Emergency Light 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
    $101.59 - $101.59
    $101.59
    $101.59 - $101.59
    $101.59
  • Best Technologies R-7 12V 7Ah Emergency Light Replacement Battery
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99

    AJC Battery Compatible with Best Technologies R-7 12V 7Ah Emergency Light 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
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99
  • Best Technologies R-5HO 12V 7Ah Emergency Light Replacement Battery
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99

    AJC Battery Compatible with Best Technologies R-5HO 12V 7Ah Emergency Light 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
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99
  • Best Technologies R-2 12V 7Ah Emergency Light Replacement Battery
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99

    AJC Battery Compatible with Best Technologies R-2 12V 7Ah Emergency Light 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
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99
  • Best Technologies TFX-2 12V 9Ah Emergency Light Replacement Battery
    $27.19 - $27.19
    $27.19
    $27.19 - $27.19
    $27.19

    AJC Battery Compatible with Best Technologies TFX-2 12V 9Ah Emergency Light 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
    $27.19 - $27.19
    $27.19
    $27.19 - $27.19
    $27.19
  • Best Technologies R-16HO 12V 7Ah Emergency Light Replacement Battery
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99

    AJC Battery Compatible with Best Technologies R-16HO 12V 7Ah Emergency Light 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
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99
  • Best Technologies R-1 12V 7Ah Emergency Light Replacement Battery
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99

    AJC Battery Compatible with Best Technologies R-1 12V 7Ah Emergency Light 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
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99
  • Best Technologies NYDXR 12V 5Ah Emergency Light Replacement Battery
    $18.49 - $18.49
    $18.49
    $18.49 - $18.49
    $18.49

    AJC Battery Compatible with Best Technologies NYDXR 12V 5Ah Emergency Light 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
    $18.49 - $18.49
    $18.49
    $18.49 - $18.49
    $18.49
  • Best Technologies R-16 12V 7Ah Emergency Light Replacement Battery
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99

    AJC Battery Compatible with Best Technologies R-16 12V 7Ah Emergency Light 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
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99 - $27.19
    $18.99
  • Best Technologies DXR 12V 35Ah Emergency Light Replacement Battery
    $101.59 - $101.59
    $101.59
    $101.59 - $101.59
    $101.59

    AJC Battery Compatible with Best Technologies DXR 12V 35Ah Emergency Light 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
    $101.59 - $101.59
    $101.59
    $101.59 - $101.59
    $101.59
  • Best Technologies CA26S10 12V 35Ah Emergency Light Replacement Battery
    $101.59 - $101.59
    $101.59
    $101.59 - $101.59
    $101.59

    AJC Battery Compatible with Best Technologies CA26S10 12V 35Ah Emergency Light 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
    $101.59 - $101.59
    $101.59
    $101.59 - $101.59
    $101.59
  • Sonnenschein M12V90F 12V 90Ah Emergency Light Battery
    $424.69 - $424.69
    $424.69
    $424.69 - $424.69
    $424.69

    UPG Battery Compatible with Sonnenschein M12V90F 12V 90Ah Emergency Light Battery

    This is an UPG® Brand replacement compatible with Sonnenschein Emergency Light Batteries Terminal: Z Volts: 12V (12 Volt) Ah: 90Ah (90000mAh) ...

    View full details
    $424.69 - $424.69
    $424.69
    $424.69 - $424.69
    $424.69
  • Sonnenschein A206/3.2U 6V 3.4Ah Emergency Light Battery
    $51.99 - $51.99
    $51.99
    $51.99 - $51.99
    $51.99

    UPG Battery Compatible with Sonnenschein A206/3.2U 6V 3.4Ah Emergency Light Battery

    This is an UPG® Brand replacement compatible with Sonnenschein Emergency Light Batteries Terminal: F1 Volts: 6V (6 Volt) Ah: 3.4Ah (3400mAh) R...

    View full details
    $51.99 - $51.99
    $51.99
    $51.99 - $51.99
    $51.99
  • Portalac GS TEV12210 12V 22Ah Emergency Light Replacement Battery
    $58.99 - $58.99
    $58.99
    $58.99 - $58.99
    $58.99

    AJC Battery Compatible with Portalac GS TEV12210 12V 22Ah Emergency Light 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
    $58.99 - $58.99
    $58.99
    $58.99 - $58.99
    $58.99
  • Portalac GS PE12V2.2 12V 2.2Ah Emergency Light Battery
    $42.49 - $42.49
    $42.49
    $42.49 - $42.49
    $42.49

    UPG Battery Compatible with Portalac GS PE12V2.2 12V 2.2Ah Emergency Light Battery

    This is an UPG® Brand replacement compatible with Portalac Emergency Light Batteries Terminal: F1 Volts: 12V (12 Volt) Ah: 2.2Ah (2200mAh) Rep...

    View full details
    $42.49 - $42.49
    $42.49
    $42.49 - $42.49
    $42.49
  • Mule 730002 6V 8.5Ah Emergency Light Battery
    $66.69 - $66.69
    $66.69
    $66.69 - $66.69
    $66.69

    UPG Battery Compatible with Mule 730002 6V 8.5Ah Emergency Light Battery

    This is an UPG® Brand replacement compatible with Mule Emergency Light Batteries Terminal: F1 Volts: 6V (6 Volt) Ah: 8.5Ah (8500mAh) Replaceme...

    View full details
    $66.69 - $66.69
    $66.69
    $66.69 - $66.69
    $66.69