Solid Power SPAC Presentation Deck

A-D Sample Definitions Category Pre-A Sample A-Sample B-Sample C-Sample D-Sample Product Description Solid Power | DCRC Proof of concept Cell Concept Validation (CV) based on customer requirements Cell Design Validation (DV) Cell Process Validation (PV) Production Validation (PV+) Sales product Use Proof of concepts or functions to ensure basic requirements as a product or process Probe multiple designs and material combinations to test performance against customer requirements Cell materials and design are frozen and the sample performance meets customer specifications Final design (B-Sample) manufactured on production tooling and cell meets customer specifications Full cell production at rate with needed quality and process certifications Supply customer at requested volumes Note: Solid Power follows a stage gate product development approach guided by APQP (Advanced Product Quality Planning). Solid Power Cell Format 0.2 Ah, 2 Ah & 20 Ah prototypes Full Scale 100 Ah Appendix Full Scale 100 Ah (Module and pack testing and validation begins) Full Scale 100 Ah (pack testing continues and vehicle integration for prototypes) Full Scale 100 Ah (vehicle level testing) Full Scale 100 Ah (full production) 49

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