This 15C HV solid-state Lithium batteries have higher energy density than the normal solid-state regular voltage batteries have, they have 15% more endurance, lighter weight.

Using a solid electrolyte will provide a smaller size with higher energy density, longer lifespan, and increased safety.

this HV solid-state 15C batteries has 20% more endurance than the normal voltage solid state batteries due to the HV cell.

Specifications: 

12S 8000mAh HV 15C:

weight: 1.660kg  size (length*width*height): 138*122*45mm