The phrase "solar charging" means using sunlight to charge or power electronic devices or batteries instead of using electricity from an electrical outlet. Full definition
And they have continued to experiment with solar charging, two people who work at the company said. (nytimes.com)
One of the company's suggested uses is for electric car charging, although no specific data was given about the efficacy of solar charging or the recommended model size for that end use. (treehugger.com)
You can also make use of solar chargers with these vehicles (I'll be examining solar charging in detail in an upcoming article). (metaefficient.com)