CyberPower SL700U Standby UPS Battery Backup and Surge Protector, 700VA/370W, 8 Outlets, Slim Profile, UL Certified
Quick take
The CyberPower SL700U is a compact standby UPS designed to protect smaller home office and entertainment setups from surges and power interruptions. It provides battery backup through five battery-supported outlets (plus surge-only outlets) and includes two USB charging ports, but its 370W max output means runtime depends heavily on how much you plug in.
Pros and cons
Pros
- Compact slim profile that’s easy to place behind desks or entertainment centers.
- 8 total NEMA 5-15R outlets, including both battery backup and surge-only options.
- Includes two USB Type A charging ports (2.4A shared) for small devices during outages.
- Surge protection plus standby battery backup for graceful shutdowns of connected gear.
Cons
- Limited power budget (700VA/370W), so heavier loads will drain the battery faster.
- Review evidence on long-term longevity is limited for some buyers, and battery endurance varies with actual connected wattage.
What buyers think
Buyer-review evidence points to the SL700U being a practical “coverage” UPS for small, sensitive electronics rather than a long-run power solution. Common themes include easy setup, usefulness for keeping routers and networking gear online through brief issues, and enough runtime to enable shutdown or safe unplugging. Several buyers also highlight the slim form factor as a key reason they chose it for home office and entertainment setups. The review evidence is less consistent on battery longevity over many years, with some users reporting early replacement experiences while others report continued reliability.
How the SL700U is built for small-space protection
This is a standby UPS, meaning it’s primarily on watch for issues and then switches to battery during outages or significant power events. The upside for typical home use is a compact footprint and straightforward daily operation, while the limitation is that runtime is not designed for high-wattage equipment or extended endurance.
Outlet layout and what to plug where
The SL700U includes eight NEMA 5-15R outlets total: five outlets that are battery backup and surge protected, and three surge-protected outlets only. Two of the battery-backed outlets are widely spaced to help accommodate larger plugs, which is helpful if you have “power brick” adapters or chunky device chargers.
USB charging for phones and tablets
Alongside the AC outlets, you get two Type A USB ports with 2.4A shared output. That makes it easier to keep smaller devices charged or powered while the UPS is running on battery.
Runtime expectations: it’s about your load
The SL700U is rated for a maximum 370W output (700VA), and battery charge time is listed at 8 hours. Runtime will depend on how many watts your connected devices actually draw. In real-world use, buyers commonly describe it as enough time for a graceful shutdown of home networking gear and smaller entertainment electronics, but not for powering larger systems for long periods.
Why this matters for choosing the right UPS
If your priority is keeping a modem, router, ONT, or networking switch online long enough to avoid a reboot and protect against data loss, a unit in this class can be a good match. If you plan to run higher-wattage devices (for example, gaming PCs, large monitors, or multiple appliances), you’ll want to estimate your total wattage first to avoid surprise battery drain.
Surge protection and backup that target common home risks
The SL700U is built to help safeguard electronics from surge events, including lightning-induced surges and other power disturbances. It also aims to support safer shutdown behavior during utility power failures, which can reduce the risk of corrupted data and protects equipment that benefits from clean, stable power.
Pros and cons (expanded)
Pros
- Good fit for home office and entertainment setups: Compact dimensions (about 2.76"D x 12.76"W x 5.4"H) make it easy to place where space is tight.
- Flexible power distribution: Battery-backed surge-protected outlets let you choose which devices get runtime.
- Convenient add-ons: Two USB charging ports support mobile devices during outages.
- Safety-focused: Listed as UL certified, which can matter for home use and basic assurance.
Cons
- Not designed for heavy loads: 370W max output means you may need to prioritize essential gear if power goes out.
- Runtime varies by connected wattage: If you plug in higher-demand equipment, you should expect shorter battery support.
Who should buy the CyberPower SL700U
Consider the SL700U if you want a compact standby UPS for items like:
- Home office networks (router, modem, ONT, networking switch)
- Home entertainment protection (TV-related electronics and consoles)
- Small peripherals that should not reboot during blips or short outages
- A slim UPS you can mount or place behind furniture
Who should skip it
It’s less ideal if you need long runtime or you plan to run higher-wattage devices for an extended outage. If you’re expecting to power something like a desktop workstation plus multiple monitors, you’ll likely want a higher-capacity UPS matched to your total load.
Verdit: a solid compact UPS for “keep essential gear safe” situations
The CyberPower SL700U makes the most sense as a slim, everyday standby backup for essential home electronics. It offers a practical outlet mix, includes USB charging, and provides surge protection plus enough battery support for shutdown-style use. If you match your load to its 370W ceiling and use the battery-backed outlets for the most important devices, it can be an effective, space-friendly choice. If your goal is to run larger loads for long periods, you’ll probably need to look at a higher-wattage UPS class.
FAQ
How long will the CyberPower SL700U run on battery?
Runtime depends on your connected load and battery condition. The unit is rated at 700VA/370W, so using fewer watts or only essential devices (like networking gear) will generally provide more time for shutdown or safe unplugging.
Does the SL700U have battery-backed outlets or surge-only outlets?
It has eight outlets total. Five are battery backup and surge protected, and three are surge protected only.
Can I use USB charging during an outage?
Yes. The SL700U includes two Type A USB charging ports with 2.4A shared total output, and USB charging can be used during battery backup.
Is the CyberPower SL700U slim enough to hide behind a TV or in a home office?
Yes. It’s designed with a compact, slim profile and can be positioned easily in tight spaces.
Is this a good UPS for a home office network?
It’s a strong fit for typical home networking protection, where you mainly need to ride through blips, prevent equipment reboots, and allow time for a graceful shutdown during outages.
What’s the main drawback to consider before buying?
The main limitation is power and runtime under higher loads. With 370W max output, you may need to prioritize which devices stay on battery.
FAQs
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Specifications
| Product Title | CyberPower SL700U Standby UPS Battery Backup and Surge Protector, 700VA/370W, 8 Outlets, Slim Profile, UL Certified |
|---|---|
| Category | Electronics > Computers & Accessories > Computer Accessories & Peripherals > Uninterruptible Power Supply (UPS) |
| Brand | CyberPower |
| Manufacturer | Cyber Power |
| Model Number | SL700U |
| Item Weight | 6.77 Pounds |
| Product Dimensions | 2.76"D x 12.76"W x 5.4"H |
| Color | Black |
| Voltage | 120 Volts |
| Amperage | 3.08 Amps |
| Battery Charge Time | 8 Hours |
| Form Factor | Compact |
| Input Voltage | 120 Volts |
| Maximum Power | 370 Watts |
| Surge Protection Rating | 890 Joules |
| Output Current | 3.08 Amps |
| Output Voltage | 120 Volts (AC) |
| Power Plug Type | Type B - 3 pin (North American) |
| Connector Type | NEMA |
| Number of Outlets | 8 |
| Battery Average Life | 8 Hours |
| Output Wattage | 370 Watts |
| Wattage | 370 watts |
| Frequency Range | 47 Hz – 53 Hz, 57 Hz – 63 Hz, 57 Hz – 63 Hz |
| Runtime | 2 minutes |
| Lower Temperature Rating | 32 Degrees Fahrenheit |
| Upper Temperature Rating | 104 Degrees Fahrenheit |
Available variants
Style
- Compact
- Slim
- Standby
Size
- 625VA
- 700VA
- 950VA
- 425VA
- 550VA
- 900VA
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