This question is in regards to a 100 Watt solar panel that is less than a year old.
The solar panel was working fine but recently something happened.
Now when I hook the solar panel up to my batteries, the solar panel starts drawing energy from the battery. The panel used to be charging my batteries but now it's pulling energy from them.
There's no broken glass and it doesn't appear damaged at all. Still in nice condition.
What could have happened?