The answer — one pick, priced
Get the
CyberPower ST425
$20 under your budget
The cheapest unit in a 10-source comparison — 425VA/260W of standby backup across 8 outlets, enough to bridge a modem and router through a brief cut.
Fit ledger — need → measured evidence
■ The catch — co-equal billing, always
This is a bridge, not a backup. 260W and roughly 6 minutes at full load buys you time to save a file and shut down — nothing rides out a real outage. The simulated sine wave also rules out any active-PFC desktop PSU.
Dealbreaker? Runner-up №1 adds 70W and a bigger battery for $24 ↓
■ Every product has a catch. Verdicts that hide it are how bad buys happen.
Don't buy this if…
- you need extended off-grid power (hours) rather than brief bridge-to-shutdownportable power stations dossier →
- you only need surge protection without battery backup
- you need enterprise/data center UPS (3000VA+ or online double-conversion)
- you need a UPS for 220-240V regions (EU, UK, Australia)
Wrong product for you is still a bad buy. These are the cases where we'd send you somewhere else.
Runners-up — if your needs differ
Adjacent verdicts — other needs, same method
Different budget, different household, different job — each of these is already researched, priced and verified. Take the one that matches your need.
Traps — this verdict avoids
Why the CyberPower ST425 is right for you
It avoids every trap below — and for anyone, under $80, it is the pick because it delivers:
VA is not watts
A "1500VA" UPS actually delivers only 900-1080W depending on power factor. Size against the watt rating and your real load, never the VA number on the box.
Simulated sine wave
Active-PFC power supplies — in virtually every gaming and workstation PC built since 2018 — need pure sine wave output. Simulated sine models can cause shutdowns, data loss or damage.
The battery expires on a clock
Sealed lead-acid packs need replacing every 3-5 years whether you use them or not (LiFePO4 lasts 8-10). Quoted runtimes are manufacturer figures at rated load, before any ageing.
Provenance — 10 sources, dated
Winners are picked from the full research dossier at knowledgelib.io. Prices, stock and listings are re-verified monthly.