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Rectangular black sealed battery with two terminals on top

BatteryJack inc.

BatteryJack inc. PowerStar 12V 9.0Ah AGM battery PS-1290 F2

SKU CH-Q4BY-WN1CJ

A 12 V 9.0 Ah AGM replacement battery that increases capacity over 7.5 Ah units while remaining maintenance-free and spill-proof

  • Advanced AGM technology increases capacity to 9.0Ah from 7.5Ah
  • Sealed construction prevents electrolyte leakage in any position
  • Maintenance-free design eliminates need for water top-ups
  • 100% OEM compatible replacement for UPS and backup devices
  • Expected service life of 4 to 7 years

Drop-in AGM upgrade for 7 Ah UPS units

The PowerStar PS-1290 F2 is a 12 V 9.0 Ah sealed lead-acid battery built with advanced AGM technology. It fits the same footprint as common 7 Ah or 7.5 Ah units while delivering higher capacity. The maintenance-free design suits UPS backups, alarm panels and powersports starters that need a direct 100 % OEM replacement.

Non-spillable construction runs in any orientation

Absorbed glass mat separators lock the electrolyte in place so the battery meets IATA non-spillable classification and cannot leak from terminals or case. Gas recombination keeps internal pressure low during normal float charging, eliminating the need for watering or venting. Expected service life spans four to seven years in typical standby use.

F2 blade terminals simplify swap-in installs

The T1/T2 terminal pair matches the quick-connect tabs found on most compact UPS packs, so no adapter cables or soldering are required. Physical dimensions of 5.94 L 2.56 W 3.66 H mirror legacy 7 Ah cases, letting the higher-capacity cell slide into existing battery trays or enclosures without modification.

How it compares

Measured against everything we stock in Batteries, Chargers & Accessories, at today’s prices. Recalculated every night.

Price $31.99
Pricier than about 60% of the 37 comparable items (median $28.99).

Specifications

No published specifications for this item yet.

Questions about this item

How do I install the PowerStar PS-1290 battery and which terminal orientation is correct?

The battery measures 5.94 inches long, 2.56 inches wide and 3.66 inches high with T1/T2 terminals. Install it in the same orientation as the original unit so the positive and negative posts align with the device cables; reversing the polarity will prevent the UPS from starting.

What maintenance or replacement will the PowerStar PS-1290 need over its service life?

The sealed AGM design is maintenance-free, so no water topping or electrolyte checks are required. Plan to replace the battery after the expected 4-7 year life span or sooner if runtime drops below the 9.0 Ah rating.

What limit appears first when the PowerStar PS-1290 runs under continuous load?

The 9.0 Ah capacity sets the runtime ceiling; once the stored charge is depleted the voltage drops and the connected equipment will shut down, so size the load to stay within that amp-hour rating for the required backup time.

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