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Sion Power reports 17 Ah, 400 Wh/kg Licerion-EV cell

Sion Power, a developer of high-energy, lithium-metal rechargeable batteries, reports achieving 400 Wh/kg, 700 Wh/L in a large format 17 Ah pouch Licerion Electric Vehicle (EV) cell. Licerion-EV is being designed for electric vehicle applications, focusing on high energy density, increased cycle life, safety, and fast charging capability.


17 Ah Sion Licerion-EV cell

Sion Power is producing up to 17 Ah Licerion-EV cells at its facility in Tucson, Arizona, by stacking electrodes with an approximate size of 100 mm x 100 mm on its pilot systems.

Scaling to useful cell sizes is a challenge for high-energy battery technologies. Sion Power says that it has successfully accomplished that scaling process. Both 17 Ah and 6 Ah Licerion-EV cells are routinely produced on the Sion Power pilot line and are undergoing third-party validation tests.

Less than a year ago, Sion Power had demonstrated this technology on a 1.8 Ah cell. Today we have proven the results on large format cells. Although we have seen many high-energy battery companies in the news, few of them claim to produce cells in high-capacity commercial sizes.

—Dr. Urs Schoop, Chief Technology Officer for Sion Power

Licerion-EV technology uses metallic lithium on the anode to deliver a combination of high energy per weight and volume as well as meeting the future automotive requirements for fast charge capability, power delivery, long cycle life, and safety.



Few cycles, lithium anode.


Well that’s crossing the line of viability for mid-range electric aircraft. I’m curious what the cycle life characteristics actually are.


800 full depth of discharge cycles to 70% capacity


A Tesla Model 3 with these batteries and the new lightweight structural battery pack would have 600+ mile range.

San Diego to San Francisco, Phoenix or Las Vegas with no charge stops.

Two charges per month for a 15,000 mile per year commuter.


The implications of these are energy density advances are easy to overlook in practical terms.

800 cycles x 600 miles = 480,000 miles. And you still have a 420 mile range car.

True that it’s more likely that the battery pack will get smaller and cheaper instead.

But when anyone suggests that batteries will not replace liquid or gaseous energy storage...

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