Posted 5/15/2025 09:26 (#11225598 - in reply to #11225138) Subject: RE: Testing a solar charger for battery on tender trailer.
56676
Solar panels need a controller between the panels and load (battery). It might look like a little black box with little LED lights in it. If all you have is a bare panel with 2 wires, you need a controller. There is also a certain sequence to connect the wires to energize everything.