SimpliPhi Boss.12 Battery Enclosure - Expand your energy storage capacity to 45.6 kWh! The SimpliPhi BOSS.12 is a corrosion-resistant NEMA-3R carbon steel battery bank enclosure and wiring solution with built-in shelving that holds up to 12 SimpliPhi PHI batteries. The enclousre can be free-standing or pad mounted. The BOSS 12 consolidates a PHI battery bank paired with any SimpliPhi-compatible Balance