If the battery inside your Voltaic charger is flat, here's how long it takes to collect enough energy to charge most modern smartphones in direct sunlight. As a reminder, solar charging works best when the panels are outside and pointed directly at the sun.
|Approximate Charging Times from a flat Voltaic Battery|
|Solar Panel Product Power||Hours Direct Sunlight *|
|4 Watts (Amp, Fuse 4W, Switch, OffGrid, Converter)||4-5|
|8 Watts (Spark)||2-3|
|10 Watts (Fuse 10W, Array)||2|
|16 Watts (Generator)||1|
|* Charge times may be increased in cloudy weather, high temperatures, or where panels are not angled towards t|