Tired of condensation wrecking your shed tools or greenhouse gear? I built a no-frills ESP32 + DHT22 node that wakes every 15 minutes, grabs temp/humidity data, beams it over Wi-Fi, and sleeps—running ...
Interesting Engineering on MSN
Donut Lab’s solid-state battery keeps 97.7% charge after 10 days in third test
Finnish startup Donut Lab has just released the third independent test of its solid-state ...
Basically, VTT hooked up Donut Lab’s to a battery tester and left it idle for 10 days, while measuring the voltage every 10 seconds. According to the results, the cell demonstrated high stability, ...
Donut Lab's third independent VTT test confirms its solid-state battery retains 97.7% capacity after 240 hours idle. Energy density and cycle life remain untested.
Donut Lab solid-state battery retest by Finland’s VTT shows capacity rising to 110% at 80C, but weight data is still missing.
It’s been over half a decade since Samsung last increased the battery capacity of its top-tier Galaxy S flagship. The company moved to a 5,000mAh cell with the Galaxy S20 Ultra back in 2020, and that ...
Hands-on with the BMX SolidSafe Air, world’s thinnest 5,000mAh Qi2 power bank featuring titanium construction and fast 15W ...
Independent Testing Shows Donut Lab's Fast-Charging Solid-State Battery Works Reliably at High Temps
Donut Lab released the results of the second independent test showing that its solid-state battery can handle extreme heat without affecting its performance ...
The Donut Lab solid-state battery was heated to the boiling point of water. Here’s what happened next.
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