# Solid-State Batteries Are FINALLY Here - Investigation Source: https://www.youtube.com/watch?v=O8PjlwZVLVE Recap page: https://rapidrecap.app/video/O8PjlwZVLVE Generated: 2026-01-10T13:04:59.544+00:00 --- ## Quick Overview Donut Lab claims to have achieved a breakthrough with the world's first all-solid-state battery available in production vehicles today, which boasts an energy density of 400 Wh/kg, a 5-minute full charge capability, and is projected to last 100,000 cycles, all while avoiding rare earth metals and maintaining high safety, though the company is currently focused on internal development and licensing rather than direct consumer sales. **Key Points:** - Donut Lab claims to have the world's first all-solid-state battery available in production vehicles today, boasting 400 Wh/kg energy density. - The battery cell is rated for 125 Wh capacity and 400 Wh/kg energy density, with a mass of 315g/11 oz. - The battery demonstrates an ultra-fast 5-minute full charge capability and a projected lifespan of 100,000 charge/discharge cycles. - The technology uses a solid electrolyte and avoids rare earth metals, offering superior safety and non-flammability compared to traditional lithium-ion batteries. - Testing showed 99% capacity retention at -30°C/-22°F, and the battery maintains a stable operating voltage range of 3.01V to 4.2V during charging. - Donut Lab is currently focusing on internal development and licensing the technology, rather than direct consumer sales, and has partnered with WATT Electric Vehicles to develop an EV skateboard platform. - The battery architecture is inherently safer because it avoids flammable organic liquid electrolytes, preventing issues like thermal runaway. ![Screenshot at 0:01: A close-up shot of the Donut Lab 'Solid State' battery mockup being held up for inspection, highlighting the product's compact, rectangular form factor.](https://ss.rapidrecap.app/screens/O8PjlwZVLVE/00-00-01.jpg) **Context:** The video investigates claims made by Donut Lab regarding their all-solid-state battery technology, presented as a significant breakthrough in energy storage, particularly for electric vehicles. The claims focus on superior energy density, extremely fast charging, high cycle life, and enhanced safety compared to existing lithium-ion technology. The discussion takes place at a trade show booth featuring Donut Lab's partners, WATT Electric Vehicles, who are using the battery in their EV skateboard platform. ## Detailed Analysis Donut Lab claims to have created the world's first all-solid-state battery available in production vehicles today, presenting a major leap over current lithium-ion technology. The battery boasts an energy density of 400 Wh/kg, which is significantly higher than traditional high-end lithium-ion batteries (which typically offer around 250-300 Wh/kg). Key performance metrics highlighted include an ultra-fast 5-minute full charge capability and an impressive projected lifespan of 100,000 charge/discharge cycles, far exceeding the 1,000-5,000 cycles typical of current Li-ion batteries. The technology achieves this by replacing flammable organic liquid electrolytes with a solid ceramic or polymer electrolyte, making the cells inherently safer, non-toxic, and less prone to thermal runaway, as demonstrated by a thermal test showing 99% capacity retention at -30°C. The cell testing data shown indicates a consistent charge process maintaining a voltage between 3.01V and 4.2V while drawing 270A from a Delta SM500-CP-90 power supply. Donut Lab is currently focusing on licensing this technology and manufacturing the cells themselves, rather than selling finished battery packs directly to consumers, though they are already partnering with WATT Electric Vehicles to integrate the system into an EV skateboard platform. The presenter acknowledges that while the technology is advanced, it solves key problems associated with traditional lithium-ion batteries, such as thermal management and dendrite formation. ### Donut Lab Battery Claims - 400 Wh/kg energy density - 5-minute full charge - 100,000 cycle life - No rare earth metals - Solid electrolyte ### Testing Results - 99% capacity retention at -30°C/-22°F - Stable voltage operation between 3.01V and 4.2V during high-current charging. ### Technology Comparison - Solid-state (Donut) vastly outperforms lithium-ion in cycle life (100,000 vs 1,000-5,000) and safety. ### Partnerships and Applications - Partnered with WATT Electric Vehicles for an EV skateboard platform; Donut Lab is also developing in-wheel motors; Applications include automotive, drones, and grid storage. ### Manufacturing Strategy - Focusing on internal development and licensing; manufacturing is based in Finland (Imatra) with plans for expansion. ### Interview Highlights - Discussion on the difficulty of scaling solid-state technology and the importance of avoiding thermal runaway compared to liquid electrolytes. ![Screenshot at 0:01: A close-up shot of the Donut Lab 'Solid State' battery mockup being held up for inspection, highlighting the product's compact, rectangular form factor.](https://ss.rapidrecap.app/screens/O8PjlwZVLVE/00-00-01.jpg) ![Screenshot at 0:05: A demonstration showing a Lucid Air EV driving on a track, illustrating a potential application for high-energy density batteries.](https://ss.rapidrecap.app/screens/O8PjlwZVLVE/00-00-05.jpg) ![Screenshot at 0:17: A charging progress graph demonstrating the battery's fast charge capability, showing 88% charge in 3 minutes and 59 seconds at a 1.0C rate.](https://ss.rapidrecap.app/screens/O8PjlwZVLVE/00-00-17.jpg) ![Screenshot at 2:17: A frame from a thermal stress test showing a traditional battery sample erupting in flames and smoke.](https://ss.rapidrecap.app/screens/O8PjlwZVLVE/00-02-17.jpg) ![Screenshot at 39:37: A slide displaying the cycle life comparison: Donut Battery achieving 100,000 cycles versus typical Lithium-ion batteries achieving 1,000-1,500 cycles.](https://ss.rapidrecap.app/screens/O8PjlwZVLVE/00-39-37.jpg)