Home Office & Computer Comparisons · Reviewed September 26, 2026
APC BE600M1 vs CyberPower CP685AVRG UPS Battery Backup
The APC offers 600VA/330W, five battery-backed outlets and a USB charging port. The CyberPower raises capacity to 685VA/390W, adds automatic voltage regulation and provides four battery-backed plus four surge-only outlets.
Best for
Home offices and network closets choosing a small UPS for a modem, router, desktop or NAS that can shut down safely during an outage.
Probably not for
Life-support equipment, laser printers, heaters, large motor loads, equipment that requires pure sine-wave battery output or a promised runtime without a measured load.
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APC Back-UPS BE600M1
Schneider Electric identifies the BE600M1 as a 600VA, 330W, 120V Back-UPS with seven NEMA outlets. Five outlets provide battery backup plus surge protection and two are surge-only. The unit adds one USB charging port and 490 joules of surge protection. It is a standby UPS rather than a line-interactive AVR model, so it switches to battery when incoming power leaves its accepted range instead of correcting minor fluctuations with an autotransformer.
Pros
- Five battery-backed outlets give one more backed-up receptacle than the CyberPower.
- The front USB charging port can power a small USB device without occupying an AC outlet.
Cons
- Its 600VA/330W capacity is lower than the CP685AVRG 685VA/390W rating.
- It does not provide the CyberPower model's automatic voltage regulation.
Who it’s for: Choose it when five backed-up outlets and a USB charging port fit a modest load. Skip it when AVR or more watt capacity is a stated requirement.
Check APC Back-UPS BE600M1 on Amazon Paid linkCyberPower CP685AVRG
CyberPower rates the CP685AVRG at 685VA and 390W with line-interactive topology and simulated sine-wave battery output. Its eight NEMA 5-15R outlets divide into four battery-plus-surge and four surge-only receptacles, including four transformer-spaced positions. Automatic Voltage Regulation boosts low input voltage without using the battery. The unit has a USB communications port for PowerPanel software, but no USB charging port.
Pros
- The 685VA/390W ceiling is higher, and AVR can correct minor low-voltage events without drawing on the battery.
- Eight total outlets, including four widely spaced positions, offer flexible surge-only and backed-up placement.
Cons
- Only four outlets receive battery backup, one fewer than the APC.
- Its USB connection is for management rather than charging a phone or accessory.
Who it’s for: Choose it for AVR, the higher capacity ceiling and four additional surge-only positions. Skip it if five backed-up receptacles or USB device charging matters more.
Check CyberPower CP685AVRG on Amazon Paid linkVA and watts are capacity limits, not runtime promises
The APC is rated for 600VA and 330W; the CyberPower is rated for 685VA and 390W. The watt figure is the more immediately useful ceiling for ordinary electronics, but neither unit should be loaded to its label simply because the plugs fit. Leave headroom for startup behavior, power-factor differences and future additions, and use the manufacturer sizing tools for the actual equipment list.
Runtime changes with connected load, battery age, temperature and battery condition. A router may run much longer than a desktop and monitor, so a single minute figure would be misleading without the same measured load. The practical goal for a computer UPS is often enough time to save work and shut down cleanly, not hours of normal operation.
AVR is the central topology difference
CyberPower calls the CP685AVRG line-interactive and documents single-boost Automatic Voltage Regulation. When utility voltage sags within its correction range, the autotransformer can raise it without switching to battery. That can preserve battery charge in a location with recurring brownouts or low-voltage events.
The BE600M1 is a standby Back-UPS. It is a sensible simpler design for outage backup and surge protection, but it does not offer the same AVR behavior. Neither model provides a pure sine-wave battery output specification, so equipment whose manufacturer requires pure sine wave should be paired with a different exact UPS.
Count the right kind of outlet before buying
APC provides seven outlets total: five battery-plus-surge and two surge-only. CyberPower provides eight total: four battery-plus-surge and four surge-only. Plug the modem, router, computer or storage device that must stay alive into backed-up outlets. Put nonessential accessories on surge-only positions or a separate protected circuit as the manuals allow.
Do not connect laser printers, space heaters, shredders or other high-draw and high-inrush devices to the battery side unless the UPS maker expressly approves the load. Both products use sealed lead-acid batteries that age. Test the UPS periodically, heed replacement alarms and recycle spent batteries through an appropriate program.
Choose around the equipment and shutdown plan
Choose the BE600M1 when a small setup needs five backed-up outlets and the convenience of USB charging. Choose the CP685AVRG when AVR, 390W capacity or four widely spaced surge-only outlets solves a real layout or power-quality problem. A higher VA number is not automatically better if the outlet mix and topology do not match the job.
List every device, its running watts and which items truly need battery time. Confirm that the Amazon page says BE600M1 or CP685AVRG, because neighboring capacities and similarly named Back-UPS or AVR models use different batteries, outlets and power limits. For basic non-battery protection, the surge-protector comparison explains the simpler alternative.
Official sources and further reading
Sources reviewed on September 26, 2026. Prices, availability and terms can change; recheck before buying.
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