In 2018, as part of ongoing efforts to bolster the off-grid solar market, Lighting Global Quality Assurance investigated the USB charging performance of off-grid solar products. Laboratory tests were conducted to assess the USB compatibility and charge times of product combinations. The testing demonstrated both successful charging performance and also identified problems that may occur when off-grid products are used to charge mobile devices.

This document was produced by Lighting Global Quality Assurance. In February 2020, Lighting Global Quality Assurance evolved to become VeraSol, an independent program offering quality assurance services for solar energy kits and off-grid appliances.