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Two black rectangular 12V lead-acid battery cartridges side by side

PowerWarehouse

PowerWarehouse 12V Lead Acid Battery Cartridge #6 2 Pack for APC SU1500RMX155

SKU CH-A5X3-J5W9C

Two 12 V lead-acid cartridges replace the #6 battery in an APC SU1500RMX155 UPS

  • Compatible withFits: APC SU1500RMX155
  • 12 V lead-acid chemistry delivers reliable UPS backup power
  • Two-cartridge pack restores full runtime for APC SU1500RMX155
  • 100 % compatibility guaranteed with original equipment
  • One-year replacement warranty protects your investment

PowerWarehouse 12V Lead Acid Battery Cartridge #6

This twin-pack supplies two 12-volt sealed lead-acid cartridges built to fit the APC SU1500RMX155 uninterruptible power supply. Each unit carries model number 2XRBC6SLA636 and is guaranteed 100 percent compatible with the original equipment. The pair restores runtime for server-room and network-rack installations that rely on continuous backup power.

Thermals, noise and power draw in normal use

Sealed lead-acid chemistry operates without fans, so the cartridges add no audible noise to the rack. Internal resistance remains low during typical float charging, keeping heat output minimal inside the UPS enclosure. The batteries accept charge at the rate managed by the SU1500RMX155 charger, drawing only the current required to maintain full capacity.

How it compares

Measured against everything we stock in UPS Replacement Batteries, at today’s prices. Recalculated every night.

Price $113.99
Pricier than about 78% of the 3,915 comparable items (median $39.99).

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Specifications

Product
Brand namePowerWarehouse
Model name2XRBC6SLA636
Compatibility
Compatible withFits: APC SU1500RMX155

Questions about this item

How do I install the two 12 V cartridges into my SU1500RMX155 and what step is often missed?

Power down the UPS, open the front panel, slide both cartridges in until they click, then reconnect the internal wiring harness before closing the panel — the harness reconnection is the step most people forget.

When will the 12 V lead-acid cells need replacement and how can I tell?

Expect three to five years of service; the UPS will sound a replace-battery alarm and the front-panel LED will flash when capacity drops below the threshold.

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