APC Back-UPS Pro External Battery Pack (for 1500VA Back-UPS Pro models, formerly Back-UPS RS 1500) - APC Greece
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
APC Back-UPS Pro Battery Pack 24V - battery enclosure - lead acid
UPSBatteryCenter Compatible Replacement Battery Cartridge for APC SUA1500RM2U Smart-UPS 1500 Rack Mount 2U