Add to Cart OutBack Power Systems OutBack Power GS4048A-01 Radian Series Inverter 4kW $2,527.99 OutBack Power GS4048A-01 Radian Series Grid Hybrid Inverter/Charger 4kW, Listed to UL1741-SA. The Radian Series GS4048A-01 Grid/Hybrid™ (full-flexibility grid-interactive/off-grid) Inverter/Charger is engineered toward one goal: making system... Compare Add to Cart Add to Wishlist