APC BF250 (officially part of the APC Back-UPS Office 250VA series) is a vintage standby Uninterruptible Power Supply (UPS) with built-in surge protection, designed in the 1990s to protect desktop computers and small office peripherals from outages, sags, and spikes.
Specifications & Features
• Capacity: 250 VA / approx. 170 Watts
• Input Voltage: 120V AC, 60Hz
• Outlets: Grounded NEMA 5-15R receptacles providing battery backup and surge suppression
• Battery Requirements: Typically uses a 12V sealed lead-acid (SLA) battery (such as a 12V 5.2Ah / 5.5Ah configuration), requiring users to reuse existing internal wiring harnesses/cables when swapping out old cells.