SimpliPhi AccESS PHI Integrated Power System - The SimpliPhi AccESS PHI with PHI 3.8-M batteries and Sol-Ark inverter is a fully integrated and pre-programmed energy storage and management solution that provides resilience, energy security and daily cost savings with 98% efficient, safe and reliable access to power – 24/7. Available with 15.2kWh, 19kWh or 22.8Wh of total capacity, it keeps the lights