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Rectangular 12V 9Ah UPS battery in black plastic case

BatteryJack inc.

BatteryJack inc. REW45-12 12V 9Ah UPS Replacement Battery

SKU CH-BV7C-EX942

12 V 9 Ah AGM battery replaces Yuasa REW45-12 in UPS units with maintenance-free sealed construction

  • Ready for immediate installation with 100 % OEM-compatible fit
  • Long service life of four to seven years expected
  • Sealed AGM design prevents electrolyte leakage in any orientation
  • Maintenance-free operation eliminates water checks or specific-gravity tests
  • Gas recombination system recovers over 90 % of generated gas

Direct OEM replacement

The BatteryJack REW45-12 is a sealed 12 V, 9 Ah AGM battery built to replace the Yuasa REW45-12 in uninterruptible power supplies. It arrives ready to install with no electrolyte handling required.

AGM sealed construction

Absorptive glass mat separators lock the electrolyte in place so the unit cannot leak and can operate in any orientation. The design recombines over ninety percent of gas generated during normal float service.

Four to seven year float life

At the rated capacity the cell delivers reliable backup for typical UPS loads throughout its expected service span. Runtime shortens as the battery ages and it is not suited for deep-cycle or high-drain applications beyond UPS float duty.

Highlights

  • Ready for immediate installation with 100 % OEM-compatible fit
  • Long service life of four to seven years expected
  • Sealed AGM design prevents electrolyte leakage in any orientation
  • Maintenance-free operation eliminates water checks or specific-gravity tests
  • Gas recombination system recovers over 90 % of generated gas

Specifications

No published specifications for this item yet.

Questions about this item

How does the 9Ah rating translate to actual UPS runtime?

The 9 ampere-hour capacity determines how long the UPS can supply its rated load; exact minutes depend on the connected equipment's power draw and the UPS unit's efficiency.

What terminal standard does this 12V battery use for connection?

It uses the standard F2 faston tab terminals common on Yuasa REW45-12 replacements, allowing direct plug-in to compatible UPS units without adapters.

Will this battery fit the same mounting space as the original Yuasa REW45-12?

Yes, it is built as a 100% OEM replacement with identical case dimensions and terminal layout, so it mounts in the existing battery tray without modification.

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