<img src=https://nenpower.com/wp-content/uploads/2025/04/image-1724.webp alt=’How does the energy density of Amprius’ new battery compare to other leading battery technologies’ />
Amprius’ battery technologies, particularly the SiMaxx and SiCore platforms, offer high energy densities. The SiMaxx cells have reached up to 500 Wh/kg and 1,300 Wh/L, making them among the highest commercially available energy densities in the battery industry. In comparison, the latest SiCore cells, such as the 6.3Ah version, have an energy density of 315 Wh/kg, which is still superior to many standard lithium-ion batteries but lower than the SiMaxx cells.
Other leading battery technologies typically have lower energy densities. For example, the USABC targets 275 Wh/kg for EV batteries, and many commercial batteries range between 200-300 Wh/kg. Amprius’ SiMaxx cells, therefore, significantly outperform these targets in terms of energy density.
Here is a comparison table for clarity:
| Technology | Energy Density (Wh/kg) |
|---|---|
| Amprius SiMaxx | Up to 500 |
| Amprius SiCore | Up to 315 (6.3Ah cell) |
| Standard Li-ion | 200-300 |
| USABC Target | 275 |
This shows that Amprius’ SiMaxx cells are at the forefront of energy density in the industry.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/how-does-the-energy-density-of-amprius-new-battery-compare-to-other-leading-battery-technologies/
