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W Box · 11 models

W Box UPS battery backups

Every W Box UPS certified under ENERGY STAR and listed for the US market, largest first. Each model page has the full certified specs and comparable machines from other makers.

ModelCapacityTopologyEfficiencyRuntime @ 50%
0E-RCKMT22002,000 VA / 1,540 WLine Interactive98.2%13 min
0E-1000VASNM1,500 VA / 900 WLine Interactive99.3%11 min
0E-1500V10RD1,500 VA / 900 WLine Interactive98.6%12 min
0E-1500VASNM1,500 VA / 900 WLine Interactive98.9%18 min
0E-RCKMT15001,500 VA / 1,050 WLine Interactive98.9%16 min
0E-1000V9RD1,000 VA / 600 WLine Interactive98.6%9 min
0E-RCKMT10001,000 VA / 700 WLine Interactive98.8%17 min
0E-850V8LCD850 VA / 510 WPassive Standby98.5%6 min
0E-825V12VRD825 VA / 480 WLine Interactive98.6%10 min
0E-RCKMT700700 VA / 400 WLine Interactive98.7%11 min
0E-350V6350 VA / 255 WPassive Standby97.9%8 min

Source: ENERGY STAR certification data, US EPA. Data build 2026-09-29. Brand names are as the maker certified them, with obvious variant spellings merged.