APC BE900G3 – 900 VA Standby UPS Battery Backup

Overview

The APC BE900G3 is an uninterruptible power supply (UPS) designed to provide backup power and surge protection for electronics and networking gear in small office and home environments. It delivers temporary battery support when utility power is unstable or unavailable, helping IT technicians and support personnel maintain uptime for essential devices.

This unit is rated at 900 VA / 540 W with a nominal 120 V AC input/output and operates in passive standby topology, switching to battery power within typical transfer times of around 6 ms during voltage disturbances or power loss.

Outlets consist of a mix of battery‑backup plus surge‑protected receptacles and surge‑only outlets, allowing segmentation of critical and non‑critical load connections to preserve runtime for essential equipment. The UPS includes both NEMA and USB charging ports for auxiliary device power delivery.

The internal sealed lead‑acid battery is maintenance‑free and provides energy during outages; full recharge after a deep discharge typically requires about 10 hours.

Indicators on the chassis provide real‑time status for utility power, battery mode, overload conditions, and fault warnings. This compact backup system supports placement on shelves or floors where space is limited.

Key Features

• 900 VA / 540 W standby UPS with fast transfer response
• 8 × NEMA outlets (6 backup + surge, 2 surge‑only)
• Integrated USB‑A and USB‑C charging ports
• Maintenance‑free sealed lead‑acid battery
• LED status indicators for power and fault conditions