Hello,
I've got a real old coaster bus, and I put a 120w and a 20w
solar panel on the roof just for lights and junk (its got a gas fridge).
A while back I wasn't getting much current through to the batteries unless I bypassed the regulator, then the batteries would get heaps of current (they were by no means full, voltage at like 12.6 so the regulator wasn't stopping the current).
So I got a new regulator and I thought the problem was solved. But now it's happening again.
I get current from the 20w
panel fine, but the 120w
panel won't put out any current until I
test the short circuit current on it for a while.
After I've short circuited it for about 10 seconds it starts pumping out amps like normal, then after 20mins or so it stops putting out amps again unless I short circuit
test it again, then it starts working for a while, then stops.
That is heaps weird... Has anyone ever heard of this happening?
I'm stumped...
I really have no idea, maybe there isn't a flow of electrons getting back to the
panel somehow?? So when I short circuit it it gets some to it to pump back out again? (I don't think thats the answer but I've got no idea)
Any help would be appreciated, I'll take the
panel off when I've got a bit of free time and have a play with it.