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Black rectangular sealed lead-acid battery with two terminals on top

BatteryJack inc.

BatteryJack inc. 12V 18AH SLA UPS Replacement Battery

SKU CH-VD8S-1HPVR

A 12V 18AH sealed lead-acid battery with AGM technology for UPS replacement, offering maintenance-free operation and over 90% gas recombination

  • Advanced AGM technology prevents electrolyte leakage
  • 100% OEM replacement fits models 51814 and 1220P
  • 12V 18AH capacity powers UPS backup systems
  • Maintenance-free design requires no water or checks
  • Expected service life of 4-7 years

Direct OEM Replacement

This 12V 18AH sealed lead-acid battery replaces part numbers 51814, 6fm17, 6-dzm-20, 6-fm-18 and lcx1220p in UPS backup units. It uses advanced AGM technology with absorptive glass mat separators for electrolyte retention. The sealed construction prevents leakage and allows operation in any position. It is classified as non-spillable for safe transport.

Maintenance-Free Installation

The battery requires no electrolyte checks or water additions during its service life. Gas recombination handles over 90 percent of generated gas internally. Terminals match the original equipment layout for a direct swap. Ensure the unit is powered down and disconnected before replacing the old module.

Long-Term Float Service

Designed for continuous float charging in UPS applications rather than cyclic discharge. Expected battery life spans 4 to 7 years under normal float conditions. The AGM system provides steady service throughout the design life. It is not suited for deep-cycle or frequent full-discharge applications.

Highlights

  • Advanced AGM technology prevents electrolyte leakage
  • 100% OEM replacement fits models 51814 and 1220P
  • 12V 18AH capacity powers UPS backup systems
  • Maintenance-free design requires no water or checks
  • Expected service life of 4-7 years

Specifications

No published specifications for this item yet.

Questions about this item

How can I confirm the battery is working correctly after installation?

The UPS should power on normally and show a full charge indicator. A self-test or runtime check will verify the 12V 18AH capacity is delivering expected backup time.

What comes in the box and what must I purchase separately?

The sealed 12V 18AH AGM battery is supplied ready to install. No cables, mounting hardware or electrolyte are included; reuse existing UPS connectors or source them separately.

Which replacement code matches my UPS model among the listed options?

This unit replaces part numbers 51814, 6fm17, 6-dzm-20, 6-fm-18 and lcx1220p. Match the code on your original battery to one of these references.

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