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American Power Conversion (APC) - BK500 - UPS, 120 VAC, 300 W, 500 VA, (3) 5-15R Out, NEMA 5-15P In, 3.4 min. Backup - RS
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Amazon.com: Replacement Battery Compatible with The APC Back-UPS CS 500 BK500 by UPSBatteryCenter : Electronics
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APC Back-UPS CS 500VA 500 VA 120 V AC - 3 Minute Stand-by Time - 3 x N – A. B. Computer Systems, Inc.
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Amazon.com: APC Back-UPS CS 500 12V 8Ah UPS Battery - This is an AJC Brand Replacement : Electronics
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APC BK500EI 500 VA 300 Watts (1) IEC 320 C13 (Surge Protection) (3) IEC 320 C13 (Battery Backup) Outlets Back-UPS CS 500 USB/Serial European Version - 240V - Newegg.com
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