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Standby Series CP550SLG 550VA / 330W Simulated Sine Wave UPS, 8 Outlets / USB Port

Prices as of September 26, 2026, as listed by each retailer — verify the current price on the retailer's site before purchase.

Price history tracked at Macy's price tracker

14-day low
$80.64
Sep 13 · Macy's
Best price
$80.64
−0% vs high
14-day high
$80.64
All stores
$81$81$81
Sep 13Sep 26
  • Macy's
Lowest in 14 days: $80.64 at Macy's. Highest: $80.64. Current best is 0% below the 14-day high.

About this product

The CyberPower Standby CP550SLG is a 550VA/330W uninterruptible power supply (UPS) designed to protect home office and entertainment electronics from power surges, outages, and fluctuations. It features eight NEMA 5-15R outlets with transformer-spaced design for bulky plugs, one HID-compliant USB port for device charging and system management, and built-in EMI/RFI filters to reduce electrical noise. The unit includes a maintenance-free 12V/5.5Ah battery, supports phone/network (RJ11) protection, and comes with PowerPanel Personal Edition software for monitoring and safe shutdown. Its compact, versatile form allows horizontal, vertical, or wall mounting, and operates quietly with energy-saving GreenPower technology.

  • 550VA / 330W capacity
  • 8 NEMA 5-15R outlets
  • HID USB port for auto shutdown
  • EMI/RFI filters included
  • Maintenance-free battery
  • Quiet operation with green tech

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Standby Series CP550SLG 550VA / 330W — Price History