A €200 Salt Battery Powers a House for 30 Years? We Did the Math

A battery made of salt for 200 euros is supposed to power a whole house for thirty years. We did the math on that promise, and looked at why two makers of saltwater batteries went bankrupt. In this video: What 200 euros of storage really holds, and what a house uses in a day Saltwater, sodium-ion and the hot salt battery: three technologies under one name Why saltwater can't burn, but weighs half a tonne Thirty years? What data sheets and charge cycles say Aquion and BlueSky Energy: why the companies failed Sodium-ion from CATL and BYD, and when sodium makes sense for your home All prices are 2026 averages from Germany and are not buying or investment advice. Chapters: 0:00 The Promise 1:16 What 200 Euros Store 3:15 Three Salt Batteries 4:25 Saltwater in a Box 6:42 Thirty Years? 8:16 The Verdict 9:04 Two Bankruptcies 11:35 Sodium Instead of Lithium 14:29 What Really Pays Off #homebattery #sodiumion #saltbattery