Enphase IQ Battery 5P vs HomeGrid Stack'd 14.4 kWh Battery

These are different classes of product, not close substitutes. The Enphase IQ Battery 5P is a sealed AC-coupled unit with its own grid-forming microinverters, so it installs on an Enphase system with little extra equipment and gives 5 kWh of usable storage with strong surge output. The HomeGrid Stack'd 14.4 kWh is a DC battery tower that needs a compatible hybrid or off-grid inverter, but it delivers roughly three times the energy, 12.9 kW of power and a modular path to 38.4 kWh per tower. Buy the Enphase for a small, simple, Enphase-based backup setup; buy the HomeGrid when you need capacity and whole-home power and already have or will add a supported inverter.

• Choose the Enphase IQ Battery 5P if you have Enphase solar and microinverters, want a compact AC-coupled battery that needs no separate inverter, and only need to back up a modest set of loads.
• Choose the HomeGrid Stack'd 14.4 kWh if you need whole-home or long-duration backup, plan to expand capacity over time, and have a hybrid or off-grid inverter that supports 48V LFP banks.