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I have mono and policrystaline panels, but recently bought a portable amorphous system, the fact is the voltage fluctuates, changes from a voltage to another, say, i.e. 13v to 17v or 7 to 9v.
Is this correct? is it faulty? should I have any issues when connecting the panel to a battery?
thanks in advence

Troy, I'm glad to watch your videos from the down town under, please, go on this way. Enjoy, LIVE and ...upload your vids, God bless you. Thanks
Happy Xmas to all of you

Solar panel voltages will vary with the amount of sunlight shining on the panel. That is why a solar panel is rated at a much higher voltage than the battery. This gives you a larger range of charging during most sunlight conditions.

thanks, I'll keep an eye on it, let's hope that is that