Enphase IQ Battery 3T Base Unit 3.36 kWh AC-Coupled Battery System

The Enphase IQ Battery 3T is a fully integrated AC-coupled storage system with 3.36 kWh usable energy capacity and four built-in IQ8X-BAT microinverters delivering 1.28 kW nominal output. The base unit (B03-T01-INT00-1-2) uses lithium iron phosphate (LFP) battery chemistry for enhanced safety, reliability, and extended cycle life.

Installation is fast and simple with plug-and-play AC connections to standard household wiring. The system supports passive cooling with no moving parts, and includes remote monitoring and control via mobile app and Enphase Installer Platform. Compatible with Enphase microinverters, SMA, SolarEdge, and Fronius string inverters.

The unit operates in single-phase AC mode with 89% round-trip efficiency and 96% battery efficiency. Rated for outdoor installation (IP55) with wall mounting, and backed by a 10-year limited warranty covering ≥80% capacity or 3,600 cycles.