Ionblox is a Fremont, California battery company building high-energy, high-power lithium-ion cells around a proprietary pre-lithiated silicon (SiOx) anode. Spun out of the earlier Zenlabs Energy effort and rebranded in 2022, the company targets two demanding markets - electric vehicles and electric aviation (eVTOL) - with cells that it says exceed 330 Wh/kg and can charge to roughly 60% in five minutes while holding up past 1,000 cycles. Backed by eVTOL maker Lilium, Applied Ventures, Temasek and Catalus Capital, Ionblox has raised about $32M in Series B funding and holds more than 40 patents.
Jin-Myoung Lim is the co-founder, CEO, and CTO of ACT-ion Battery Technologies, a Dallas-based deep-tech startup reinventing how cathode active materials (CAM) are made for lithium-ion batteries. A PhD mechanical engineer from Seoul National University with 2,272+ research citations and an h-index of 27, Lim spun ACT-ion out of Hunt Energy Enterprises in 2019 with a bold thesis: that the biggest bottleneck in the battery supply chain isn't the chemistry - it's the manufacturing process. His Hydro4Crystal platform produces coated single-crystal CAMs continuously, with lower energy, cost, and emissions than any incumbent method, and it works across chemistries from LFP to NMC. In 2024, the technology won an R&D 100 Award. By late 2025, ACT-ion had raised $11.5 million from BASF Venture Capital, LG Technology Ventures, Mirae Asset Capital, and Korean institutional investors, and was breaking ground on a pilot plant in Carrollton, Texas.
Qnovo is a Milpitas, California software company that makes lithium-ion batteries smarter. Its intelligent battery management platform - powering SpectralX adaptive fast charging and SentinelX safety diagnostics - is embedded in more than 150 million smartphones and increasingly in EVs from the world's top automakers, helping prevent fires, extend range, and stretch battery life.
SirenOpt is a San Leandro deep-tech company turning measurement blind spots in advanced manufacturing into real-time intelligence. Its PlasmaSens platform uses cold atmospheric plasma plus machine learning to non-destructively fingerprint materials on the production line, helping battery, semiconductor, aerospace, and power generation makers see what was previously invisible.
Group14 Technologies is a Woodinville, Washington battery materials company that makes SCC55, a silicon-carbon composite anode material that replaces graphite in lithium-ion batteries to deliver higher energy density and faster charging. Spun out of EnerG2 in 2015 by Rick Luebbe and Dr. Rick Costantino, the company operates commercial factories in Washington State and South Korea and supplies more than 100 EV, consumer electronics, and energy-storage cell makers worldwide. It has raised over $1 billion in equity, including a $463M Series D in 2025 led by SK, Inc.
Voltaiq is a Berkeley-based enterprise software company that pioneered the category of 'battery intelligence.' Its Enterprise Battery Intelligence (EBI) platform automatically collects, cleans, and harmonizes data from battery test and production equipment, then surfaces the performance, quality, health, and safety insights engineers need to build better batteries faster. Founded in 2012 by UC Berkeley PhDs Tal Sholklapper and Eli Leland, Voltaiq is used by automakers, consumer-electronics giants, and energy-storage companies including Mercedes-Benz, Toyota, Amazon, Meta, and Sila to accelerate product development and catch defects weeks earlier than traditional QC.
Renewance, Inc. is an Elmhurst, Illinois company that manages the full life cycle of industrial batteries - from installation and remote monitoring to decommissioning, repurposing, and recycling. Founded in 2015 by three former GE Energy Storage leaders, it pairs hands-on field services with the RenewanceConnect software platform so energy-storage and EV operators can track assets, stay compliant, and retire batteries safely instead of letting them become environmental liabilities.