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Rectangular black sealed lead-acid battery with two silver T2 terminals on top

BatteryJack inc.

BatteryJack inc. 12V 9AH Opti Batteries 420E ups replacement battery

SKU CH-4NDS-76PAM

A 12V 9AH sealed AGM battery with T2 terminals measuring 5.94in by 2.56in by 3.72in and weighing 13.16lbs, designed as a direct OEM replacement for the Opti Batteries 420E UPS

  • Ready for critical power backup with 12V 9AH sealed AGM design
  • Fits Opti 420E units as a 100% OEM replacement with T2 terminals
  • Leak-free operation in any position thanks to sealed non-spillable construction
  • Maintenance-free service life of 4-7 years with gas recombination technology
  • Compact 5.94 x 2.56 x 3.72 inch footprint weighs 13.16 lbs

12 V 9 Ah UPS replacement cell

This sealed lead-acid battery uses AGM construction to deliver 12 volts and 9 ampere-hours for compatible UPS units. It fits models that require the 420E form factor and T2 terminals. The maintenance-free design prevents electrolyte leakage in any mounting orientation. It is not for buyers who need a different voltage, capacity or terminal layout.

AGM chemistry under continuous float charge

The absorptive glass mat separator holds enough electrolyte for steady service during extended outages. Gas recombination exceeds 90 percent, so the cell remains sealed without venting under normal operation. Expected service life reaches four to seven years when kept on float charge. It is not for installations that demand lithium cycle life or rapid recharge rates.

Direct swap for worn 12 V 9 Ah SLA units

The 5.94 in length, 2.56 in width and 3.72 in height match the original 420E footprint, while the 13.16 lb weight confirms equivalent plate mass. A 24-month warranty covers the replacement period. The jump is worth it when the existing pack shows reduced runtime or voltage sag. It is not for systems that have migrated to a different battery platform or higher capacity requirement.

Highlights

  • Ready for critical power backup with 12V 9AH sealed AGM design
  • Fits Opti 420E units as a 100% OEM replacement with T2 terminals
  • Leak-free operation in any position thanks to sealed non-spillable construction
  • Maintenance-free service life of 4-7 years with gas recombination technology
  • Compact 5.94 x 2.56 x 3.72 inch footprint weighs 13.16 lbs

Specifications

No published specifications for this item yet.

Questions about this item

Does the 12 V 9 AH AGM battery generate noticeable heat or noise during continuous UPS operation?

The sealed AGM design runs silently with no moving parts; normal float charging produces only minimal warmth that stays well within the case temperature limits.

What terminal type must the existing UPS have for this 5.94 in × 2.56 in × 3.72 in battery to connect directly?

The unit uses T2 terminals, so the UPS must accept that same terminal style for a direct fit.

Will the 12 V 9 AH capacity match the runtime of the original 420E battery in my older UPS?

Yes, it is built as a 100 % OEM replacement for the 420E, delivering the same voltage and amp-hour rating for equivalent runtime.

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