Expandable capacity - Increase the capacity of DELTA Pro Ultra with an extra 6kWh.

Highlights:

One-Month Backup: 6kWh for up to two-day backup, scalable to 90kWh for one-month coverage
Space-Saving: Stack up the system in a neat, mess-free way
One-Minute Setup: With a plug-and-play design

Specifications:
Dimensions: 26×18×8 in (including mat)