CyberPower CST135UC 1350VA/810W Simulated Sinewave LCD Battery Backup UPS System, Black
*Price sourced from Amazon.com. Last updated 2026-07-22. Price and availability subject to change.
Bottom line: The CyberPower CST135UC 1350VA/810W Simulated Sinewave LCD Battery Backup UPS System, Black is a niche pick — read recent reviews before buying in the power protection category, priced around $174.99. Read recent reviews carefully before committing.
A mini-tower UPS with line interactive topology, the CyberPower Intelligent LCD CST135UC provides battery backup (using simulated sine wave output) and surge protection for desktop computers, workstations, networking devices, and home entertainment systems. The CST135UC uses Automatic Voltage Regulation (AVR) to correct minor power fluctuations without switching to battery power, which extends battery life. AVR is essential in areas where power fluctuations occur frequently.Two USB charge ports (one Type-A and one Type-C) power portable devices such as mobile phones and tablets, even during…
SpecPicks Verdict
SpecPicks classifies CyberPower CST135UC 1350VA/810W Simulated Sinewave LCD Battery… as a niche pick — read recent reviews before buying in the power protection category, based on our editorial and benchmark analysis and our ranking model that weights rating × review-volume × price-fit. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for power protection of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ USB charge ports: (1) Type-A & (1) Type-C @ 4.0A (Shared)
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- UNINTERRUPTED POWER - The 1350VA/810W simulated sinewave output ensures your devices remain operational during power fluctuations, safeguarding against data loss and hardware damage.
- EXTENDED RUNTIME - With 2 minutes of runtime at full load and 10 minutes at half load, this UPS provides ample time to save work and properly shut down sensitive electronics.
- VERSATILE CONNECTIVITY - Equipped with 10 NEMA 5-15R outlets (5 battery/surge protected) and dual USB charge ports (Type A & C), it powers and charges a wide range of devices.
- ADVANCED PROTECTION - Features 1500 Joules of surge suppression, EMI/RFI filtration, and network/coax protection, defending against power surges and line noise for optimal performance.
- USER-FRIENDLY MANAGEMENT - A multifunction LCD and HID compliant USB port, coupled with PowerPanel Personal software, offer intuitive monitoring and control over your power backup.
- ENERGY EFFICIENT DESIGN - Boasting GreenPower UPS Bypass Technology and Energy Star certification, this system minimizes power consumption, reducing your environmental footprint and costs.
Full Specifications
| Brand | CyberPower |
|---|---|
| Color | Black |
| Runtime | 10 minutes |
| Voltage | 120.0 |
| Wattage | 810 watts |
| Material | Metal |
| Unit Count | 1.0 Count |
| Form Factor | Tower |
| Connectivity | USB |
| Model Number | CST135UC |
| Input Voltage | 120 Volts |
| Maximum Power | 810 Watts |
| Connector Type | NEMA, USB |
| Output Current | 6.75 Amps |
Ready to buy?
CyberPower CST135UC 1350VA/810W Simulated Sinewave LCD Battery Backup UPS System, Black is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-07-22. Price and availability subject to change.
Related Power Protection
More guides & deep dives from the SpecPicks archive
Browse all articles & guides →- RTX 4070 Super vs RX 7800 XT — Which to Buy in 2026
- Best Retro Handhelds in 2026 — From $35 to $500
- Best Budget Gaming PC Build 2026 — ~$1,000 ($800 on Sale)
- The Complete Voodoo5 5500 AGP Driver Guide (2026 Edition)
- Emulation Hardware in 2026: FPGA, Software, and Cart-Reader Ecosystems
- How to Build a Windows 98 Retro PC in 2026
- Best 1440p Gaming GPUs in 2026
More reviews from the SpecPicks archive
Browse all reviews →- Play Retro Games in Your Browser: Best Emulators 2025
- Best PC Gaming Controller in 2026: GameSir G7 SE vs DualSense vs 8BitDo Pro 2
- Intel llm-scaler-vllm 1.4: Arc Pro B70 Inference Support Lands
- Best Electric Air Blowers for Gaming Keyboards & PC Fans
- Raspberry Pi Projects for Students (2025 Guide)
- AI-Driven Driver Hunt: Installing Vintage Sound Cards on Windows 98 With Claude
- Audigy 2 ZS Won't Detect in Win98 SE: A Troubleshooting Decision Tree
- Best Budget Gaming Mouse Pad for Esports in 2026
- LongCat-2.0: A Frontier Model Trained Without Nvidia GPUs
- Best CompactFlash and SATA/IDE Adapter for a Retro PC Boot Drive in 2026
- Ryzen 7 5800X vs 5700X vs 5600G for a Budget Local-LLM Rig
- Best Budget SATA SSD for Gaming in 2026
- Best Mouse Pad for Office Productivity and Long Hours (2026)
- Best SSDs and Cloning Tools to Upgrade an Aging Gaming PC or Console in 2026
- RTX 5090 AI TOPS: What the Official Number Means
- llama.cpp on Snapdragon Hexagon NPU: First Real Benchmarks and What Actually Works
- Asus ROG Harpe II Extreme Lands With a 65K-DPI Sensor
- KDE KWin Gaming Patches 2026: Linux Latency vs Windows
- Running Mistral Leanstral 1.5 Locally on an RTX 3060 12GB
- Best Budget SSD for PC Builds in 2026
- Best GPU for Running Llama 70B Locally in 2026
- Dumping and Imaging Vintage IDE and CompactFlash Drives in 2026: A Safe Workflow
- Prime Intellect's $130M raise: build your own agent rig
- Best Raspberry Pi Alternatives for AI in 2026