Solid Power SPAC Presentation Deck

All-Solid-State Enables Further Cost Savings at the Pack-Level Virtual Teardown of a Notional EV Battery Pack Battery Junction Box Battery Management Controller 1. Cairn ERA. Housing Cover (aluminum sheet) Cell Module Solid Power | DCRC+ Aluminum Crash Structure Housing Tray Battery Frame Cooling system No cooling required, likely just heating Lower Protection Cover Safer cells allow for less pack protection removing mass and cost EV Battery Pack Cost Proportions¹ 6% 3% 5% Appendix 17% 9% O ■ Cells ■ Thermal Management System (TMS) ■ Batery Management System (BMS) ■Cabling and Wiring ■ Other Components ■ Assembly Safer and higher density all-solid-state is expected to yield significant benefits at the pack-level 60% 51

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