EcoFlow launched new versions of the River Series of portable power stations today; The River 2 (268Wh), River 2 Max (512Wh), and River 2 Pro (768Wh). The River 2 line upgrades the River series to Lithium Iron Phosphate batteries and adds a new look and feel. They all feature pure sine wave outputs ranging from 300W to 800W, with a surge capacity using EcoFlows' X-Boost to double the output in certain scenarios. This review looks at the EcoFlow River 2 Max.