Add your first device above — click a category then a device chip.
UPS Sizer Settings
Load Power Factor
?
VA = Watts / Power Factor. UPS units are rated in VA, not Watts. Modern PCs with active PFC have PF ~0.95–1.0. Mixed office loads: 0.80–0.90. Older equipment: 0.65–0.80.
Choose the power factor closest to your equipment type.
UPS Load Capacity Target
Keep UPS loaded below this % of its VA rating for reliability headroom.
Runtime Estimator Settings
Ah
Check your UPS battery label or specifications sheet.
batteries
Battery Sizer Settings
minutes
Depth of Discharge (DoD)
?
Lead-acid batteries should not be discharged below 50% (80% DoD usable) to preserve battery life. Premium AGM/lithium can go to 90–100% DoD.
Add devices to see your recommended UPS size.
Recommended UPS Size
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VA
—
Total Load
—
W
Required Apparent
—
VA
Recommended UPS Type
—
—
Actual Load—%
—
Add devices and enter battery specs to estimate runtime.
Estimated Runtime
—
—
—
Runtime Visualization (max 120 min)
Total Load
—
W
Battery Energy
—
Wh
Add devices to see battery options for your target runtime.
Required Battery Energy
—
Wh
—
Total Load
—
W
Target Runtime
—
min
Battery Options (at selected voltage)
Battery Size
Wh/Battery
# Needed
Blue highlight = most practical option. All values in parallel strings at selected voltage.
Solar Bridge
Design a Permanent Solar Backup System
—
W Critical Load
—
Wh for 4 hr backup
—
kW Solar to recharge
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