NASA’s Solid-State Battery

[desert.snake]

NASA’s Solid-State Battery Research Exceeds Initial Goals, Draws Interest - NASA

NASA researchers are making progress with developing an innovative battery pack that is lighter, safer, and performs better than batteries commonly used in

www.nasa.gov

If the capacity is 2x the same size and they make them round compliant with current standards, that would be cool. If they are square, then we will have many square lanterns in the future.
Hopefully within 10-15 years we will get them.

 

[dealgrabber2002]

Nice, even if they are square, it still fits in a round tube.

 

[pnwoutdoors]

Instead of housing each individual battery cell inside its own steel casing, as liquid batteries do, all the cells in SABERS's battery can be stacked vertically inside one casing. Thanks in part to this novel design, SABERS has demonstrated solid-state batteries can power objects at the huge capacity of 500 watt-hours per kilogram – double that of an electric car.

"Not only does this design eliminate 30 to 40 percent of the battery's weight, it also allows us to double or even triple the energy it can store, far exceeding the capabilities of lithium-ion batteries that are considered to be the state of the art," Viggiano said.

... and have found it can operate in temperatures nearly twice as hot as lithium-ion batteries, without as much cooling technology.

Great output
One-third less weight than conventional batteries
2x-3x the amount of stored energy
Safer (at least from the standpoint of spontaneous Li-involved fire)
Can operate in tougher, and hotter, conditions

Sounds promising.