--- title: Tesla built the Cybercab’s battery pack with room for... description: Tesla left spare room in the Cybercab's battery pack so it can later switch to cheaper LFP cells, battery engineer Robert Sumpf told Munro Live. The robotaxi... canonical: https://daily.dev/posts/tesla-built-the-cybercab-s-battery-pack-with-room-for-cheaper-lfp-cells-jry4fuqii twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Tesla built the Cybercab’s battery pack with room for cheaper LFP cells | daily.dev og:description: Tesla left spare room in the Cybercab's battery pack so it can later switch to cheaper LFP cells, battery engineer Robert Sumpf told Munro Live. The robotaxi... og:url: https://daily.dev/posts/tesla-built-the-cybercab-s-battery-pack-with-room-for-cheaper-lfp-cells-jry4fuqii og:image: https://api.daily.dev/og/posts/jry4fuQii.png og:image:alt: Tesla built the Cybercab’s battery pack with room for cheaper LFP cells og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Tesla built the Cybercab’s battery pack with room for cheaper LFP cells **[The Next Web](https://daily.dev/sources/tnw)** · 2 min read · 0 upvotes · 0 comments ## Summary Tesla left spare room in the Cybercab's battery pack so it can later switch to cheaper LFP cells, battery engineer Robert Sumpf told Munro Live. The robotaxi currently runs Tesla's own 4680 cells with a nickel-based chemistry, which store more energy than LFP. LFP cells are cheaper, more stable and last more charging cycles, which matters for a car Tesla says is built to run 500,000 miles. Each battery module is sealed individually so a failed one can be swapped, unlike the glued pack in the Model Y. Tesla VP Lars Moravy also said the Cybercab factory line builds cars faster than Tesla can deploy them, so it doesn't run every day. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### Why did Tesla design the Cybercab's battery pack with extra empty space? Tesla left spare room next to and under the battery modules so it can later switch to lower energy density LFP cells as it scales, according to battery engineer Robert Sumpf. Since LFP cells store less energy per cell than Tesla's current 4680 nickel-based cells, the extra space lets Tesla fit more cells to maintain range. Tesla VP Lars Moravy added the car also simply needed fewer batteries than originally planned. _Anyone tracking EV battery chemistry trade-offs can follow Cybercab and LFP developments on daily.dev._ ### What battery cells does the Tesla Cybercab currently use? The Cybercab currently uses Tesla's own 4680 cells with a nickel-based chemistry. These are more energy dense than LFP cells but more expensive and less stable over long-term cycling. The pack was designed with spare capacity so Tesla could later add LFP cells, which are cheaper and better suited to a vehicle intended to run 500,000 miles. _Readers comparing EV battery chemistries for cost and longevity can keep up with Tesla's cell strategy on daily.dev._ ## Similar posts on daily.dev - [Here’s why Slate changed the battery in its cheap EV truck](https://daily.dev/posts/here-s-why-slate-changed-the-battery-in-its-cheap-ev-truck-qwsatj3oi) · TechCrunch · 0 upvotes · 0 comments - [Tesla’s 4680 battery supply chain collapses as partner writes down deal by 99%](https://daily.dev/posts/tesla-s-4680-battery-supply-chain-collapses-as-partner-writes-down-deal-by-99--av70uaquz) · Hacker News · 0 upvotes · 0 comments - [GM bets $900M on LMR battery chemistry to cut EV costs](https://daily.dev/posts/gm-bets-900m-on-lmr-battery-chemistry-to-cut-ev-costs-wrc7eop2b) · The Next Web · 0 upvotes · 0 comments - [Tesla’s Cybercab is finally launching, and it starts by giving its own staff a lift](https://daily.dev/posts/tesla-s-cybercab-is-finally-launching-and-it-starts-by-giving-its-own-staff-a-lift-pk9lcf2ye) · The Next Web · 0 upvotes · 0 comments - [Tesla to begin Cybercab production in April, Musk claims](https://daily.dev/posts/tesla-to-begin-cybercab-production-in-april-musk-claims-8dmrmftte) · TechCrunch · 0 upvotes · 0 comments --- Tags: [#tesla](https://daily.dev/tags/tesla), [#autonomous-cars](https://daily.dev/tags/autonomous-cars) [View this post on daily.dev](https://daily.dev/posts/tesla-built-the-cybercab-s-battery-pack-with-room-for-cheaper-lfp-cells-jry4fuqii) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Tesla built the Cybercab’s battery pack with room for cheaper LFP cells","url":"https://daily.dev/posts/tesla-built-the-cybercab-s-battery-pack-with-room-for-cheaper-lfp-cells-jry4fuqii","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/tesla-built-the-cybercab-s-battery-pack-with-room-for-cheaper-lfp-cells-jry4fuqii"},"datePublished":"2026-10-27T15:30:54.064Z","dateModified":"2026-10-27T15:39:45.622Z","description":"Tesla left spare room in the Cybercab's battery pack so it can later switch to cheaper LFP cells, battery engineer Robert Sumpf told Munro Live. 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Since LFP cells store less energy per cell than Tesla's current 4680 nickel-based cells, the extra space lets Tesla fit more cells to maintain range. Tesla VP Lars Moravy added the car also simply needed fewer batteries than originally planned. Anyone tracking EV battery chemistry trade-offs can follow Cybercab and LFP developments on daily.dev."}},{"@type":"Question","name":"What battery cells does the Tesla Cybercab currently use?","acceptedAnswer":{"@type":"Answer","text":"The Cybercab currently uses Tesla's own 4680 cells with a nickel-based chemistry. These are more energy dense than LFP cells but more expensive and less stable over long-term cycling. The pack was designed with spare capacity so Tesla could later add LFP cells, which are cheaper and better suited to a vehicle intended to run 500,000 miles. Readers comparing EV battery chemistries for cost and longevity can keep up with Tesla's cell strategy on daily.dev."}}]} ```