Sunne charges itself when it captures sun-rays. The more sun the better - although in some locations Sunne might get too hot for charging. Read on for more information.
Sunne charges best in full sunlight. So, when you select a window to hang Sunne - best is to choose a southerly orientation with minimal shading obstructions (avoid trees and tall buildings). To generate energy, sunlight must reach the solar surface on the back of Sunne.
There is a small indication light on the side of Sunne. When this is on, Sunne is charging. When the indication light is blinking slowly, the battery is fully charged.
In Summer, temperature can be an important factor - some windows get really hot - so we suggest not to hang Sunne directly against the window to allow some cooling airflow. Above 45 degrees Celsius, the charging performance is limited for safety reasons. So if you see a lot of sunlight shining on Sunne, but it is not charging well, check the temperature.
In Winter, sometimes there may not be enough sunshine to charge your Sunne sufficiently, especially if you like to use the light a lot during the day. For this reason, we have equipped Sunne with a USB-C charging port just in case the battery drops too low. Here
is some extra information about charging your Sunne like this.