Nfinitys patent pending frame design houses all of the modular system components, including 4 k VA power modules. By simply installing additional power or battery modules, you can expand your current system, extend your backup runtime or add redundancy. Hot-swap capability makes it easy to add or replace modules. Each power module is an independent 4k VA, 2.8k W unit, consisting of a power factor corrected rectifier, battery charger & inverter, with associated monitoring & control circuitry. The modules are paralleled to provide greater capacity and/or redundancy. Modules may be added or replaced on-line with no interruption or danger to the connected equipment.