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Do we always need to invert solar DC to AC in order to charge an EV? Since EVs take DC charging, isn't there a way to wire DC directly from the solar into EVs battery?

The switches are to be installed on a wall and I cannot drill the wall, as it is only 1cm (0.4in) thick. I only find switches that require drilling a hole and they are not convenient to install on a wall, (like the left one, in the picture below). The white switch (on the right) is only ON-OFF...

Suddenly when I turn on the solar panel it starts to withdraw power from the battery instead of charging the battery. How is it possible? Is it damaged? Its a flexible type and the output was always very low but it managed to maintain the battery charged when the system is not in use. Now I...

SEE PHOTO attached: On 12v system I have a group of lamps that are tryggered by switch n1 and another group connected to switch n2. But I need a 3rd group that turn ON whenever either switch 1 or 2 is ON. Which device do I need to do this?