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UPS Batteries
Power outages shouldn’t mean downtime for your business. At BatteryClerk, we provide a wide range of high-quality replacement batteries for UPS systems, designed to keep your critical equipment running seamlessly during unexpected power disruptions. Our inventory features top brands, and our team of experts is here to help you find the perfect battery for your specific UPS model. With unbeatable prices and fast, reliable shipping, BatteryClerk ensures your business stays protected and operational. Don’t let power interruptions slow you down—shop now and keep your operations running smoothly
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Original price $22.99 - Original price $22.99Original price$22.99$22.99 - $22.99Current price $22.99AJC Battery Compatible with OPTI-UPS Thunder Shield Series TS650 12V 8Ah UPS Battery
In stockInformation 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...
View full detailsOriginal price $22.99 - Original price $22.99Original price$22.99$22.99 - $22.99Current price $22.99 -
Original price $12.19 - Original price $12.19Original price$12.19$12.19 - $12.19Current price $12.19AJC Battery Compatible with OPTI-UPS Standby Series VS375C VS400C RBAT-5 12V 3.2Ah UPS Battery
In stockInformation 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...
View full detailsOriginal price $12.19 - Original price $12.19Original price$12.19$12.19 - $12.19Current price $12.19 -
Original price $22.99 - Original price $22.99Original price$22.99$22.99 - $22.99Current price $22.99AJC Battery Compatible with OPTI-UPS Thunder Shield Series TS1250 TS1250B 12V 8Ah UPS Battery
In stockInformation 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...
View full detailsOriginal price $22.99 - Original price $22.99Original price$22.99$22.99 - $22.99Current price $22.99 -
Original price $18.99 - Original price $27.19Original price$18.99 - $27.19$18.99 - $27.19Current price $18.99AJC Battery Compatible with OPTI-UPS Thunder Shield Series TS1250 TS1250B 12V 7Ah UPS Battery
In stockInformation 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...
View full detailsOriginal price $18.99 - Original price $27.19Original price$18.99 - $27.19$18.99 - $27.19Current price $18.99 -
Original price $12.19 - Original price $12.19Original price$12.19$12.19 - $12.19Current price $12.19AJC Battery Compatible with OPTI-UPS Standby Series VS575C VS600C 12V 3.2Ah UPS Battery
In stockInformation 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...
View full detailsOriginal price $12.19 - Original price $12.19Original price$12.19$12.19 - $12.19Current price $12.19 -
Original price $12.19 - Original price $12.19Original price$12.19$12.19 - $12.19Current price $12.19AJC Battery Compatible with OPTI-UPS Standby Series CS500B 12V 3.2Ah UPS Battery
In stockInformation 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...
View full detailsOriginal price $12.19 - Original price $12.19Original price$12.19$12.19 - $12.19Current price $12.19 -
Original price $22.99 - Original price $22.99Original price$22.99$22.99 - $22.99Current price $22.99AJC Battery Compatible with OPTI-UPS Remarkable Series RS650B 12V 8Ah UPS Battery
In stockInformation 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...
View full detailsOriginal price $22.99 - Original price $22.99Original price$22.99$22.99 - $22.99Current price $22.99 -
Original price $22.99 - Original price $22.99Original price$22.99$22.99 - $22.99Current price $22.99AJC Battery Compatible with OPTI-UPS Reliable Series RS1200 12V 8Ah UPS Battery
In stockInformation 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...
View full detailsOriginal price $22.99 - Original price $22.99Original price$22.99$22.99 - $22.99Current price $22.99 -
Original price $18.99 - Original price $27.19Original price$18.99 - $27.19$18.99 - $27.19Current price $18.99AJC Battery Compatible with OPTI-UPS PS2200B-USB 12V 7Ah UPS Battery
In stockInformation 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...
View full detailsOriginal price $18.99 - Original price $27.19Original price$18.99 - $27.19$18.99 - $27.19Current price $18.99 -
Original price $41.89 - Original price $46.59Original price$41.89 - $46.59$41.89 - $46.59Current price $41.89AJC Battery Compatible with OPTI-UPS PS1100 1100PS TowerRM 12V 12Ah UPS Battery
In stockInformation 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...
View full detailsOriginal price $41.89 - Original price $46.59Original price$41.89 - $46.59$41.89 - $46.59Current price $41.89 -
Original price $27.19 - Original price $27.19Original price$27.19$27.19 - $27.19Current price $27.19AJC Battery Compatible with OPTI-UPS PS1000B 12V 9Ah UPS Battery
In stockInformation 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...
View full detailsOriginal price $27.19 - Original price $27.19Original price$27.19$27.19 - $27.19Current price $27.19 -
Original price $22.99 - Original price $22.99Original price$22.99$22.99 - $22.99Current price $22.99AJC Battery Compatible with OPTI-UPS Power Series PS1500B PS1500B-RM 12V 8Ah UPS Battery
In stockInformation 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...
View full detailsOriginal price $22.99 - Original price $22.99Original price$22.99$22.99 - $22.99Current price $22.99 -
Original price $22.99 - Original price $22.99Original price$22.99$22.99 - $22.99Current price $22.99AJC Battery Compatible with OPTI-UPS Power Series PS1000D-RT 12V 8Ah UPS Battery
In stockInformation 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...
View full detailsOriginal price $22.99 - Original price $22.99Original price$22.99$22.99 - $22.99Current price $22.99 -
Original price $35.39 - Original price $46.59Original price$35.39 - $46.59$35.39 - $46.59Current price $35.39AJC Battery Compatible with OPTI-UPS ES650 12V 10Ah UPS Battery
In stockInformation 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...
View full detailsOriginal price $35.39 - Original price $46.59Original price$35.39 - $46.59$35.39 - $46.59Current price $35.39 -
Original price $41.89 - Original price $46.59Original price$41.89 - $46.59$41.89 - $46.59Current price $41.89AJC Battery Compatible with OPTI-UPS ES650 12V 12Ah UPS Battery
In stockInformation 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...
View full detailsOriginal price $41.89 - Original price $46.59Original price$41.89 - $46.59$41.89 - $46.59Current price $41.89 -
Original price $27.19 - Original price $27.19Original price$27.19$27.19 - $27.19Current price $27.19AJC Battery Compatible with OPTI-UPS GS1100B 12V 9Ah UPS Battery
In stockInformation 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...
View full detailsOriginal price $27.19 - Original price $27.19Original price$27.19$27.19 - $27.19Current price $27.19 -
Original price $41.89 - Original price $46.59Original price$41.89 - $46.59$41.89 - $46.59Current price $41.89AJC Battery Compatible with OPTI-UPS ES650 650ES 12V 12Ah UPS Battery
In stockInformation 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...
View full detailsOriginal price $41.89 - Original price $46.59Original price$41.89 - $46.59$41.89 - $46.59Current price $41.89 -
Original price $27.19 - Original price $27.19Original price$27.19$27.19 - $27.19Current price $27.19AJC Battery Compatible with OPTI-UPS ES1500C 12V 9Ah UPS Battery
In stockInformation 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...
View full detailsOriginal price $27.19 - Original price $27.19Original price$27.19$27.19 - $27.19Current price $27.19 -
Original price $22.99 - Original price $22.99Original price$22.99$22.99 - $22.99Current price $22.99AJC Battery Compatible with OPTI-UPS Enhanced Series RBAT-92 12V 8Ah UPS Battery
In stockInformation 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...
View full detailsOriginal price $22.99 - Original price $22.99Original price$22.99$22.99 - $22.99Current price $22.99 -
Original price $22.99 - Original price $22.99Original price$22.99$22.99 - $22.99Current price $22.99AJC Battery Compatible with OPTI-UPS Enhanced Series RBAT-12 12V 8Ah UPS Battery
In stockInformation 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...
View full detailsOriginal price $22.99 - Original price $22.99Original price$22.99$22.99 - $22.99Current price $22.99 -
Original price $22.99 - Original price $22.99Original price$22.99$22.99 - $22.99Current price $22.99AJC Battery Compatible with OPTI-UPS Enhanced Series ES1500C ES1500C-RM 12V 8Ah UPS Battery
In stockInformation 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...
View full detailsOriginal price $22.99 - Original price $22.99Original price$22.99$22.99 - $22.99Current price $22.99 -
Original price $18.99 - Original price $27.19Original price$18.99 - $27.19$18.99 - $27.19Current price $18.99AJC Battery Compatible with OPTI-UPS Enhanced Series ES1500C ES1500C-RM 12V 7Ah UPS Battery
In stockInformation 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...
View full detailsOriginal price $18.99 - Original price $27.19Original price$18.99 - $27.19$18.99 - $27.19Current price $18.99 -
Original price $22.99 - Original price $22.99Original price$22.99$22.99 - $22.99Current price $22.99AJC Battery Compatible with OPTI-UPS Enhanced Series ES1000C ES1000C-RM 12V 8Ah UPS Battery
In stockInformation 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...
View full detailsOriginal price $22.99 - Original price $22.99Original price$22.99$22.99 - $22.99Current price $22.99 -
Original price $18.99 - Original price $27.19Original price$18.99 - $27.19$18.99 - $27.19Current price $18.99AJC Battery Compatible with OPTI-UPS Enhanced Series ES1000C ES1000C-RM 12V 7Ah UPS Battery
In stockInformation 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...
View full detailsOriginal price $18.99 - Original price $27.19Original price$18.99 - $27.19$18.99 - $27.19Current price $18.99
Keep your data safe during emergencies and downtime with a UPS device. Just as important, keep your UPS device running with a reliable replacement or backup battery. BatteryClerk offers a wide range of affordable and reliable UPS replacement batteries for many top brands.
UPS Battery Replacement
View our guide for installing UPS replacement batteries to ensure you get the most out of your new AJC brand battery.