APC Power Saving Back-UPS XS 1500 Black BX1500G - Best Buy
APC by Schneider Electric Back-UPS Pro External Battery Pack (for 1500VA Back-UPS Pro models) - 24 V DC - Lead Acid - 4 Year Minimum Battery Life - 6 Year Maximum Battery Life - Office Supply Hut
APC Smart-UPS X SMX1500RM2UCNC - UPS - 1350 Watt - 1500 VA - with APC SmartConnect - SMX1500RM2UCNC - UPS Battery Backups - CDW.com