Is Donut Labs Battery Lithium Ion? - CleanTechnica

The article from CleanTechnica examines claims made in a YouTube video by Ziroth regarding whether Donut Labs' battery is lithium-ion. It begins by explaining the charging behavior of lithium-ion batteries, which involves a current-limited voltage source. Initially, when the battery is at low state of charge (SOC), it charges quickly with a relatively constant current, and as it approaches full charge, the current gradually decreases while the voltage remains constant. The article critiques Ziroth’s comparison of voltage versus SOC and voltage versus time curves, noting that comparing curves with different parameters is scientifically unsound and can lead to false conclusions. The analysis then focuses on the Donut Labs battery charging curve. Lithium-ion batteries have strict voltage limits to avoid damage or safety risks, such as bricking from over-discharge or fire hazards from overcharge. The charger enforces these limits. The Donut Labs curve shows a steep voltage rise at the start of charging, indicating near 0% SOC, and a