The Energizer Solar Powerstack Hybrid Stackable Battery 2.9kWh Main Unit is the core component of the Powerstack system. Designed with lithium iron phosphate (LiFePO₄) technology, it provides safe, long-lasting, and efficient energy storage. This main unit is required for all Powerstack installations, enabling seamless integration with solar hybrid inverters and managing the connected sub-units.

With support for up to six sub-units, the Energizer Powerstack system offers exceptional scalability for both residential and commercial solar installations. Compact, stackable, and reliable, the main unit ensures optimal performance, making it a future-proof choice for expanding energy needs.