New Batteries for a 3000VA APC UPS - Battery Replacement and Testing - YouTube
APC UPS, 3000 VA Smart-UPS Sine Wave, Short Depth UPS Battery Backup with Extended Run Option, Tower/4U Rack Convertible, Line-Interactive, 120V (SMX3000LV) - Newegg.com
APC UPS, 3000 VA Smart-UPS Sine Wave, Short Depth UPS Battery Backup with Extended Run Option, Tower/4U Rack Convertible, Line-Interactive, 208V (SMX3000HVT) - Newegg.com
Amazon.com: APC Smart-UPS 3000VA UPS Battery Backup with Pure Sine Wave Output (SMT3000) : Electronics