Extended Battery Modules (EBMs) from CyberPower ensure extended battery runtimes for select Smart App UPS models during power outages. Each rack/tower convertible EBM takes up 2U or 3U of rack space, depending upon the model, and can be installed in a tower form factor to match the UPS. The DC plug-and-play power connectors allow for daisy-chaining additional EBMs to a UPS system. EBMs compatible with Smart App Online UPS systems also have a built-in battery charger, providing Fast Charge Technology to quickly restore the backup power supply. Every CyberPower EBM has a three-year warranty.