3000 VA / 3000 W · 208/230 VAC · Online Double-Conversion Rack UPS Comparison

P91g-3000 vs APC Smart-UPS SRT3000RMXLT

The P91g-3000 and APC Smart-UPS SRT3000RMXLT are both 208/230 V online double-conversion VRLA UPS in a 2U rack format for IT, network, AV, and edge environments. The P91g-3000 delivers higher usable output (full 3 kW), much higher charging capability, lighter weight, stronger altitude capability, and TAA compliance.

Xtreme Power
P91g-3000
vs
APC
Smart-UPS SRT3000RMXLT
Where the P91g-3000 leads

What the P91g-3000 brings

  • Higher usable output (full 3 kW vs 2700 W)
  • Much higher charge current (1–8 A vs 1.5–2 A)
  • Lighter chassis with a similar footprint
  • Stronger high-altitude capability and TAA compliance
Side-by-side

Side-by-side specifications

SpecificationXtreme Power P91g-3000APC Smart-UPS SRT3000RMXLTAdvantage
Battery chemistryVRLAVRLAEqual chemistry
Capacity3000 VA / 3000 W (unity PF)3000 VA / 2700 WP91g – higher usable power
TopologyOnline double-conversionOnline double-conversionEquivalent protection
Runtime (internal)3 min @ 3 kW3 min @ 3 kWComparable baseline
Charge currentProgrammable 1–8 A1.5–2 AP91g – much higher
Recharge time<3 hours3 hours (longer w/ EBM)P91g – faster recharge
Extended batteriesUp to 8 packsUp to 10 packsComparable scaling (APC scales higher)
Size & weight17.2 × 24.8 × 3.4 in · 60.6 lb17.0 × 25.0 × 3.4 in · 69 lbP91g – lighter, similar footprint
Operating altitudeDerate above 6,500 ftDerate above 4,921 ftP91g – higher capability
TAA complianceYesNoP91g – federal eligible
Warranty3 years3 yearsEqual

Specifications from Xtreme Power’s supplied P91g-3000 vs APC Smart-UPS SRT3000RMXLT comparison; confirm against current vendor documentation. Both are 208/230V online double-conversion VRLA platforms.

Where each fits

Choosing between them

Both deliver full 3 kW online VRLA protection at equal warranty. The P91g-3000 leads on charging, recharge, weight, altitude, and TAA; the APC fits APC-standardized battery and service ecosystems.

Choose the P91g-3000 if you need

  • Extended-runtime deployments with external battery modules
  • Fast recharge recovery requirements
  • Federal / public-sector installations
  • Higher-altitude and edge deployments

The Smart-UPS SRT3000RMXLT may fit if you need

  • Standardization on existing APC infrastructure
  • Compatibility with existing APC battery packs (APC scales to 10)
  • Consistency with APC service environment

Specifying a 208/230V scalable-runtime online UPS?

Xtreme Power supports UPS selection, runtime sizing, and distributed infrastructure design across IT, networking, AV, and regulated environments.