Anker SOLIX BP3000 Expansion Battery - 3,072Wh (For F3000)

The F3000 pays for itself in as little as 2 years with solar production and time-of-use pricing.

Note: Based on $0.5/kWh peak electricity rate and 80% daily cycling in California,
the setup includes F3000, two expansion batteries, and 2400W solar panels.