DELTA Pro Ultra Battery [Add-on]

* EcoFlow DELTA Pro Ultra Battery only operates with the EcoFlow DELTA Pro Ultra Inverter Expandable capacity: Increase the capacity of DELTA Pro Ultra with an extra 6kWh. * If you purchase three or more battery packs, contact our customer service team to claim your EcoFlow Fixing Metal Tab, which is necessary for securely stacking your battery packs. Highlights: - Weeks-of-Comfort Backup: Scalable to 30kWh capacity in one set -Space-Saving: Stack up the system in a mess-free way -One-Minute Setup: With a plug-and-play design Specifications: Dimensions: 26×18×8 in / 660 × 455 × 204 mm (including mat)