Designed ForAPC Smart-UPS VT 10kVA, 10kVA with 1 Battery Module Expandable to 2, 10kVA with 1 Battery Module Expandable to 4, 10kVA with 2 Battery Modules, 10kVA with 2 Battery Modules Expandable to 4, 10kVA with 3 Battery Modules Expandable to 4, 10kVA with 4 Battery Modules, 15kVA, 15kVA with 2 Battery Modules, 15kVA with 2 Battery Modules Expandable to 4, 15kVA with 3 Battery Modules Expandable to 4, 15kVA with 4 Battery Modules, 20kVA, 20kVA with 2 Battery Modules, 20kVA with 2 Battery Modules Expandable to 4, 20kVA with 2 Battery Modules Expandable to 5, 20kVA with 3 Battery Modules Expandable to 4, 20kVA with 3 Battery Modules Expandable to 5, 20kVA with 4 Battery Modules, 20kVA with 4 Battery Modules Expandable to 5, 20kVA with 5 Battery Modules