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

Generator Batteries

Keep your power running smoothly with reliable replacement generator batteries from BatteryClerk! We offer a wide selection of high-quality replacement batteries for all major generator brands, ensuring your backup power source is always ready when you need it. Our batteries are designed for long life and reliable performance, and we offer competitive prices and expert advice to help you find the perfect fit for your generator.


  • Champion 41532 12V 18Ah Generator Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with Champion 41532 12V 18Ah Generator 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
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • Champion 100110 12V 18Ah Generator Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with Champion 100110 12V 18Ah Generator 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
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • AJC Battery Compatible with ETQ DG4LE 12V 18Ah Generator Battery
    $62.69 - $62.69
    $62.69
    $62.69 - $62.69
    $62.69

    AJC Battery Compatible with ETQ DG4LE 12V 18Ah Generator 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
    $62.69 - $62.69
    $62.69
    $62.69 - $62.69
    $62.69
  • AJC Battery Compatible with Coleman Powermate PC0555523.01 12V 18Ah Generator Battery
    $62.69 - $62.69
    $62.69
    $62.69 - $62.69
    $62.69

    AJC Battery Compatible with Coleman Powermate PC0555523.01 12V 18Ah Generator 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
    $62.69 - $62.69
    $62.69
    $62.69 - $62.69
    $62.69
  • Lister Petter TR2 3 Power Plant Optional 12V 90Ah Generator Replacement Battery
    Sold out
    $184.79 - $184.79
    $184.79
    $184.79 - $184.79
    $184.79

    AJC Battery Compatible with Lister Petter TR2 3 Power Plant Optional 12V 90Ah Generator Battery

    Out of 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
    $184.79 - $184.79
    $184.79
    $184.79 - $184.79
    $184.79
    Sold out
  • Miller Electric Big Blue Air Pak 12V 75Ah Generator Replacement Battery
    Sold out
    $149.99 - $149.99
    $149.99
    $149.99 - $149.99
    $149.99

    AJC Battery Compatible with Miller Electric Big Blue Air Pak 12V 75Ah Generator Battery

    Out of 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
    $149.99 - $149.99
    $149.99
    $149.99 - $149.99
    $149.99
    Sold out
  • Firman Model: WH02942 12V 5Ah Generator Replacement Battery
    $18.49 - $18.49
    $18.49
    $18.49 - $18.49
    $18.49

    AJC Battery Compatible with Firman Model: WH02942 12V 5Ah Generator 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
  • Firman Model: H05753 12V 18Ah Generator Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with Firman Model: H05753 12V 18Ah Generator 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
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • Firman Model: P08003 12V 18Ah Generator Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with Firman Model: P08003 12V 18Ah Generator 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
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • Firman Model: T08071 12V 18Ah Generator Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with Firman Model: T08071 12V 18Ah Generator 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
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • AJC Battery Compatible with Miller Electric Blue Star 6000 12V 18Ah Generator Battery
    $62.69 - $62.69
    $62.69
    $62.69 - $62.69
    $62.69

    AJC Battery Compatible with Miller Electric Blue Star 6000 12V 18Ah Generator 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
    $62.69 - $62.69
    $62.69
    $62.69 - $62.69
    $62.69
  • AJC Battery Compatible with Lincoln Electric Company WP150 Electric Arc Welder 12V 18Ah Generator Battery
    $62.69 - $62.69
    $62.69
    $62.69 - $62.69
    $62.69

    AJC Battery Compatible with Lincoln Electric Company WP150 Electric Arc Welder 12V 18Ah Generator 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
    $62.69 - $62.69
    $62.69
    $62.69 - $62.69
    $62.69
  • AJC Battery Compatible with Lincoln Electric Company Weldanpower AC DC Electric Arc Welder 12V 18Ah Generator Battery
    $62.69 - $62.69
    $62.69
    $62.69 - $62.69
    $62.69

    AJC Battery Compatible with Lincoln Electric Company Weldanpower AC DC Electric Arc Welder 12V 18Ah Generator 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
    $62.69 - $62.69
    $62.69
    $62.69 - $62.69
    $62.69
  • AJC Battery Compatible with Lincoln Electric Company Weldanpower 150 Electric Arc Welder 12V 18Ah Generator Battery
    $62.69 - $62.69
    $62.69
    $62.69 - $62.69
    $62.69

    AJC Battery Compatible with Lincoln Electric Company Weldanpower 150 Electric Arc Welder 12V 18Ah Generator 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
    $62.69 - $62.69
    $62.69
    $62.69 - $62.69
    $62.69
  • AJC Battery Compatible with Lincoln Electric Company Ranger 9 Electric Arc Welder 12V 18Ah Generator Battery
    $62.69 - $62.69
    $62.69
    $62.69 - $62.69
    $62.69

    AJC Battery Compatible with Lincoln Electric Company Ranger 9 Electric Arc Welder 12V 18Ah Generator 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
    $62.69 - $62.69
    $62.69
    $62.69 - $62.69
    $62.69
  • AJC Battery Compatible with Lincoln Electric Company Ranger 8 Electric Arc Welder 12V 18Ah Generator Battery
    $62.69 - $62.69
    $62.69
    $62.69 - $62.69
    $62.69

    AJC Battery Compatible with Lincoln Electric Company Ranger 8 Electric Arc Welder 12V 18Ah Generator 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
    $62.69 - $62.69
    $62.69
    $62.69 - $62.69
    $62.69
  • AJC Battery Compatible with Lincoln Electric Company ONAN G9 PRO Electric Arc Welder 12V 18Ah Generator Battery
    $62.69 - $62.69
    $62.69
    $62.69 - $62.69
    $62.69

    AJC Battery Compatible with Lincoln Electric Company ONAN G9 PRO Electric Arc Welder 12V 18Ah Generator 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
    $62.69 - $62.69
    $62.69
    $62.69 - $62.69
    $62.69
  • AJC Battery Compatible with Lincoln Electric Company ONAN G7 Electric Arc Welder 12V 18Ah Generator Battery
    $62.69 - $62.69
    $62.69
    $62.69 - $62.69
    $62.69

    AJC Battery Compatible with Lincoln Electric Company ONAN G7 Electric Arc Welder 12V 18Ah Generator 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
    $62.69 - $62.69
    $62.69
    $62.69 - $62.69
    $62.69
  • AJC Battery Compatible with Lincoln Electric Company B and S G7 Electric Arc Welder 12V 18Ah Generator Battery
    $62.69 - $62.69
    $62.69
    $62.69 - $62.69
    $62.69

    AJC Battery Compatible with Lincoln Electric Company B and S G7 Electric Arc Welder 12V 18Ah Generator 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
    $62.69 - $62.69
    $62.69
    $62.69 - $62.69
    $62.69
  • AJC Battery Compatible with Lincoln Electric Company AC-150 Electric Arc Welder 12V 18Ah Generator Battery
    $62.69 - $62.69
    $62.69
    $62.69 - $62.69
    $62.69

    AJC Battery Compatible with Lincoln Electric Company AC-150 Electric Arc Welder 12V 18Ah Generator 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
    $62.69 - $62.69
    $62.69
    $62.69 - $62.69
    $62.69
  • AJC Battery Compatible with Lincoln Electric Company SAE-300 Electric Arc Welder 12V 100Ah Generator Battery
    Sold out
    $187.39 - $187.39
    $187.39
    $187.39 - $187.39
    $187.39

    AJC Battery Compatible with Lincoln Electric Company SAE-300 Electric Arc Welder 12V 100Ah Generator Battery

    Out of 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
    $187.39 - $187.39
    $187.39
    $187.39 - $187.39
    $187.39
    Sold out
  • AJC Battery Compatible with Kohler 9 EFOR Z 12V 100Ah Generator Battery
    Sold out
    $187.39 - $187.39
    $187.39
    $187.39 - $187.39
    $187.39

    AJC Battery Compatible with Kohler 9 EFOR Z 12V 100Ah Generator Battery

    Out of 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
    $187.39 - $187.39
    $187.39
    $187.39 - $187.39
    $187.39
    Sold out
  • AJC Battery Compatible with Kohler 85RZ Electric Plant 12V 100Ah Generator Battery
    Sold out
    $187.39 - $187.39
    $187.39
    $187.39 - $187.39
    $187.39

    AJC Battery Compatible with Kohler 85RZ Electric Plant 12V 100Ah Generator Battery

    Out of 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
    $187.39 - $187.39
    $187.39
    $187.39 - $187.39
    $187.39
    Sold out
  • AJC Battery Compatible with Kohler 85R Electric Plant 12V 100Ah Generator Battery
    Sold out
    $187.39 - $187.39
    $187.39
    $187.39 - $187.39
    $187.39

    AJC Battery Compatible with Kohler 85R Electric Plant 12V 100Ah Generator Battery

    Out of 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
    $187.39 - $187.39
    $187.39
    $187.39 - $187.39
    $187.39
    Sold out