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Sealed 12V 9.0AH AGM battery, black rectangular case with T1 T2 terminals

BatteryJack inc.

BatteryJack inc. PoweStar 12V 9.0AH UPS Replacement Battery BATT129

SKU CH-K42Z-1K6B2

A 12 V 9.0 Ah AGM battery that replaces 7.5 Ah units in UPS systems, measuring 5.94 × 2.56 × 3.66 in with T1/T2 terminals

  • Higher capacity than 7.5 Ah units with 9.0 Ah rating
  • Sealed AGM design prevents electrolyte leakage in any position
  • Maintenance-free construction eliminates watering or fluid checks
  • Direct 100 % OEM-compatible fit for BATT129 applications
  • Expected service life of four to seven years

12 V 9.0 Ah UPS Replacement Battery

The PowerStar BATT129 is a sealed AGM battery built to replace 12 V units in uninterruptible power supplies and backup devices. It delivers 9.0 Ah capacity, which exceeds the 7 Ah or 7.5 Ah cells often found in the same chassis. The maintenance-free design allows operation in any orientation without electrolyte leakage.

Verify voltage terminal type and physical space

Before ordering confirm that your UPS requires a 12 V battery with T1 or T2 terminals. Measure the available compartment against the cell dimensions of 5.94 length 2.56 width and 3.66 height to ensure a proper fit. The unit is a direct 100 percent OEM replacement so no adapter cables are needed when the terminal style matches.

Thermals noise and power draw in normal use

Sealed AGM construction produces no audible fan noise and generates minimal heat during float charge or discharge cycles. The recombination system keeps gas emissions negligible so the battery runs silently in office or server environments. Internal resistance remains low throughout the 4 to 7 year expected service life maintaining efficient energy delivery.

Highlights

  • Higher capacity than 7.5 Ah units with 9.0 Ah rating
  • Sealed AGM design prevents electrolyte leakage in any position
  • Maintenance-free construction eliminates watering or fluid checks
  • Direct 100 % OEM-compatible fit for BATT129 applications
  • Expected service life of four to seven years

Specifications

No published specifications for this item yet.

Questions about this item

Does the BATT129 ship ready to install or do I need separate terminals or cables?

The battery arrives with T1/T2 terminals fitted and sealed AGM construction; no extra cables or terminal kits are required for a standard UPS swap.

My UPS originally used a 7.5 Ah pack — is the 9.0 Ah BATT129 the correct upgrade?

Yes — the 9.0 Ah rating is a direct capacity increase over 7.5 Ah while keeping the same 12 V voltage and 5.94 × 2.56 × 3.66 in footprint.

How does the 9.0 Ah capacity translate into actual runtime for my UPS?

At 12 V the pack delivers roughly 100 Wh, giving a measurable runtime boost over lower-capacity packs while fitting the existing battery compartment.

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