A look at Sila Nanotechnologies' new battery model, which ships in the new Whoop wearable and may fuel a change in energy storage for electric cars and more
Cade Metz / New York Times : Tweets: @silagene , @kurtkelty , @silananotech , @shaylekann , and @gleb_yushin Tweets: Gene Berdichevsky / @silagene : “New kinds of batteries may not dazzle consumers like new apps or gadgets. But like tiny transistors, they are at the heart of technology advancement. If batteries don't improve very much, neither do the devices they power.” via @CadeMetz https://www.nytimes.com/... Kurt Kelty / @kurtkelty : Today we brought to market the most significant step forward in battery chemistry since the intro of Li-ion. Sila anodes will begin shipping immediately in the WHOOP 4.0, one of the most advanced pieces of wearable technology. https://www.businesswire.com/ ... https://www.nytimes.com/... https://twitter.com/... Sila Nano / @silananotech : Today marks the most significant #battery innovation in market in 30 years. Now commercially available in @whoop 4.0, Sila has the ability to unlock innovations in consumer product design, EV, and renewable energy. Learn more in @nytimes: https://www.nytimes.com/... Shayle Kann / @shaylekann : Big whoop https://techcrunch.com/... https://twitter.com/... Gleb Yushin / @gleb_yushin : Today our breakthrough silicon anode battery material is in market. Congrats to our @SilaNanotech team! It's just the beginning. https://techcrunch.com/...
Context & Ripple Effects
After years of lab-stage development, Sila Nanotechnologies has crossed into commerce: its silicon anode battery chemistry ships immediately inside the WHOOP 4.0 wearable, with co-founder Gene Berdichevsky framing better cells as the substrate for all device progress — 'if batteries don't improve very much, neither do the devices they power.' The company positions the milestone as the biggest chemistry step since lithium-ion itself, the cell John Goodenough invented and later tried to leapfrog with his own super-battery design.
The launch lands in a field where silicon-based anodes are becoming a contested category: Advano raised $18.5M to make battery components from scrap silicon on similar durability claims, while 24M emerged from stealth targeting lithium-ion production costs. A wearable-first rollout gives Sila volume manufacturing experience before tackling the far larger automotive market the article points toward.
First-order effects
- WHOOP gains a differentiated hardware spec — longer-lasting cells from Sila's silicon anodes — while Sila converts years of R&D into its first revenue-bearing commercial shipment.
Second-order effects
- Silicon anode suppliers like Advano now compete against a proven, shipped reference design, raising the bar for anyone pitching battery makers on unproven chemistry.
Third-order effects
- If the wearable-beachhead pattern holds, new battery chemistries reach scale through small high-margin devices before displacing lithium-ion in EVs — a slower structural transition than headline launches imply, and one that AI-accelerated battery research may compress further.
The trend: Battery chemistry startups are using wearables as their first commercial foothold on the way to electric vehicles, turning next-generation cells from research projects into shippable products.