We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Rectangular sealed lead-acid battery pack, grey plastic casing, four cells, 12V 18A, weighs 51.88 lbs

Battery Technology Inc.

Battery Technology Inc. RBC55-SLA55-BTI UPS Replacement Battery 12V 18A 4-Cell SLA

SKU CH-A5E8-MZ47R MPN RBC55-SLA55-BTI

12 V 18 A sealed lead-acid pack with four cells replaces APC RBC55 in DLA2200, SUA2200, SUA3000 and SUA5000RMT5U units

  • TypeBattery
  • CompatibilityAPC DLA2200, SUA2200, SUA2200XL, SUA3000, SUA3000XL, SUA3000
  • SpecificationsVolts: 12V Cells: 4 Amps: 18A Chemistry: Sealed Lead Acid
  • 12 V 18 A sealed lead-acid chemistry delivers reliable backup power
  • Four-cell 12 V design matches original RBC55 specifications exactly
  • 18 A capacity supports extended runtime for critical APC UPS units
  • Compatible with APC DLA2200 SUA2200 SUA3000 and SUA5000RMT5U models
  • 88 lb robust construction ensures durable long-term operation

Direct UPS Replacement

This sealed lead-acid battery pack replaces the APC RBC55 cartridge in compatible Smart-UPS units. It delivers 12 volts and 18 amp-hours across four cells to restore backup runtime. The pack fits DLA2200, SUA2200, SUA2200XL, SUA3000, SUA3000XL, SUA3000XLT and SUA5000RMT5U models. Installation requires no soldering or wiring changes.

Sealed Lead-Acid Limits

The chemistry provides reliable standby power but self-discharges during long storage, so a refresh charge every few months is advised. Capacity falls at low temperatures and the 51.88 lb weight demands secure mounting in the rack or tower. No internal balancing circuit is present; the UPS firmware manages charge termination.

Swaps Aged RBC55 Cartridges

When the original pack no longer holds a full charge or the UPS reports a battery fault, this unit restores the specified runtime. The upgrade is worthwhile once runtime drops below critical load requirements or after the typical three-to-five-year service life. It does not add capacity beyond the original 18 Ah rating.

Highlights

  • 12 V 18 A sealed lead-acid chemistry delivers reliable backup power
  • Four-cell 12 V design matches original RBC55 specifications exactly
  • 18 A capacity supports extended runtime for critical APC UPS units
  • Compatible with APC DLA2200 SUA2200 SUA3000 and SUA5000RMT5U models
  • 88 lb robust construction ensures durable long-term operation

Specifications

BrandBTI
ModelRBC55-SLA55-BTI
TypeBattery
CompatibilityAPC DLA2200, SUA2200, SUA2200XL, SUA3000, SUA3000XL, SUA3000XLT, SUA5000RMT5U (2)
Replace oem number(s): RBC55
SpecificationsVolts: 12V
Cells: 4
Amps: 18A
Chemistry: Sealed Lead Acid
Shipping weight24.49 kg
Package size432 × 279 × 254 mm

Questions about this item

Which BTI RBC55-SLA55-BTI version matches my APC SUA3000 UPS?

This 12V 18A 4-cell SLA pack replaces APC RBC55 and fits SUA3000, SUA3000XL and SUA3000XLT units directly.

What runtime does the 18A rating actually deliver in an SUA2200?

The 18A capacity supports the SUA2200 load profile for the same duration as the original RBC55 cartridge.

Does the sealed lead-acid chemistry limit charge voltage or temperature range?

Standard SLA chemistry accepts the UPS built-in charger voltage and operates within the APC unit's specified temperature envelope.

New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.