New Technical Note on USB Smartphone and Battery Charging

Designing a USB port to charge the many cell phones, smartphones, tablets, and other mobile devices commonly in use today is a difficult technical challenge. If not properly configured, a USB port may not charge some devices – or it may charge them very slowly – leaving the consumer with a poor solution to their energy needs.

This Technical Note discusses USB charge port specifications and how they apply to renewable energy products. It is intended as an introduction and resource for manufacturers and other industry stakeholders on the history and application of complex USB technical standards as they pertain to mobile device battery charging.