Forum Discussion
BFL13
Jul 24, 2020Explorer II
Forget the 18v! Your controller will pass "12v" battery voltage to the array once it is connected to the battery. With no battery you are just seeing array voltage with no battery. You seem to have a 12v array with that 18v. Connect the controller to the battery.
Actually, if it is a 12/24 controller, you should first connect it to the battery so the controller knows it is a 12v system or a 24v system and it sets for that, then you connect the solar panel array to the controller. In this case, it might work just connecting. It will not fry. If it doesn't work right, then do it the proper way around, connecting battery first.
Actually, if it is a 12/24 controller, you should first connect it to the battery so the controller knows it is a 12v system or a 24v system and it sets for that, then you connect the solar panel array to the controller. In this case, it might work just connecting. It will not fry. If it doesn't work right, then do it the proper way around, connecting battery first.
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