Sale $359.00 Reg.( $469.00 )Amazon – EF ECOFLOW Portable Power Station River 3 Plus with EB600 Extra Battery, Expand Capacity from 286Wh to 858Wh, 3 Up to 1200W AC Outlets, <10 MS UPS, <30 dB Quiet, River 3 Max Plus LiFePO4 Battery