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 of usable energy capacity and four built-in IQ8X-BAT microinverters delivering 1.28 kW of 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 uses passive cooling with no moving parts and includes remote monitoring and control via a mobile app and the Enphase Installer Platform. It is compatible with Enphase microinverters and SMA, SolarEdge, and Fronius string inverters.

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