Rondo Energy have recently received millions of dollars in investments for their thermal battery which uses superheated bricks. When heating is required, they make much more sense than lithium-ion batteries as they are cheaper, use no critical materials, last longer, and are just as efficient! Therefore, the Rondo heat battery can end battery storage as an option for heat applications! Thanks to everyone at Rondo Energy for their time and I wish them all the best in the future! Sources: Patent - https://patents.google.com/patent/US20220170386A1/en Website - https://rondo.com/ Another article - https://newatlas.com/energy/rondo-heat-battery-brick-toaster/ #energystorage #battery #renewableenergy