The eVTOL industry is at a critical inflection point. Air taxi certifications are advancing, delivery programs are scaling — but the battery technology that will power mature eVTOL networks isn’t commercially available yet. Semi-solid state fills the gap.
What eVTOL Batteries Actually Need
- Aviation-grade safety: Zero tolerance for thermal runaway in enclosed cabins.
- High power-to-weight: Every Wh/kg improvement translates to range or payload.
- 1,000+ cycle life for commercial air taxi economics.
- Certification pathway compatibility: DO-311A (FAA), ED-272 (EASA).
- Thermal management integration with aircraft flight management systems.
Technology Comparison
| Factor | Standard LiPo | Semi-Solid (Voltsky) | True Solid-State |
|---|---|---|---|
| Thermal safety | High risk | Very Low | Minimal |
| Commercial availability | Now | Now | 2027–2030+ |
| Cycle life | 200–300 | 500+ | 1,000+ (projected) |
| OEM customization | Limited | Full custom | Not yet |
How We Work with eVTOL Developers
- Power Architecture Review — voltage bus, dimensions, thermal environment, certification targets. Technical brief in 5 business days.
- Engineering Samples — 5–10 custom packs for ground and flight testing.
- Iterative Validation — 2–3 iteration cycles to reach a validated flight-ready configuration.
- Production Supply — consistent cell binning, pack-level QC, serialized traceability documentation.