As part of its 'I Donut Believe' campaign, Finnish battery developer Donut Lab has published further independent test results for its disputed solid-state ...

Wearable devices are often exposed to environmental variables that can significantly impact temperature readings. A smartwatch sits on the wrist, where ambient air temperature, sunlight, and even wind ...

When testing cells, temperature can influence many of the cell properties. Therefore, when connecting a cell to a piece of cell test equipment, along with connecting voltage sense leads and ...

In today’s electronics applications, batteries power nearly all our portable electronic devices. Batteries also serve as emergency power backup systems on large premises. Plus, all-electric vehicles ...

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 ...