Aetherion 12s3p | 40.8V 33.15Ah Amprius SA08

Precision-Engineered Ultra-High Energy Packs for Aerospace, Defense, Robotics, and Other Demanding Applications

Cell Datasheet 

Built to Perform

• Assembled in the USA using grade A, factory-fresh cells

• Proprietary assembly process for low-temp and high-current reliability

• Voltage-matched, thermally optimized for maximum consistency and safety

• Certified for transport as Dangerous Goods (UN 38.3 compliant)

• Backed by a Lifetime Warranty & USA-based customer support

Core Specifications

• Nominal Voltage: 40.8 V (12S)

• Max Voltage: 50.4 V

• Min Voltage: 30.0 V

• Recommended Cut-off Voltage: 33.0 V ground / 37.8 V air

• Nominal Capacity: 33,150 mAh / 33.15 Ah

• Total Energy: 1,352.52 Wh

• Max Continuous Discharge: 162 A

• Max Charge Rate: 97.2 A (3C)

• Burst Discharge: 259.2 A for <30 sec

• Cell Chemistry: Lithium-ion (NMC, Silicon Anode)

Mechanical Details

• Configuration: 12S3P

• Dimensions (L × W × H): 28.9 cm × 15.6 cm × 6.25 cm

• Weight: 3,840 g ±40 g

• Wire Gauge: 6 AWG

• Connectors: QS8, AS150, or custom

• Balance Plug: JST-XH-13P

• Jacketing: Durable Polyvinyl Chloride (PVC) or optional upgrades

• Operating Temp Range: –20 °C to 60 °C

Available Upgrades

Modular enhancements available upon request through our contact form or email:

• Sensors: NTC Thermistors or Digital

• Hard Case: Rugged aluminum-rubber composite

• Custom Wire Lengths / Connector Options / Mounting Features

Integration Notes

Optimal performance is dependent on airflow during both discharge and charge cycles. Packs should be installed where ambient cooling is sufficient to maintain cell skin temperature below 60 °C. Contact us for thermal guidelines or airflow modeling support.

Engineering Support

We offer:

• Custom pack configurations

• Engineered drawings and CAD integration

• System-level energy planning assistance

Image for reference only. Actual product may vary in appearance.