Thanks for the heads up Ziffius, I've not had my 100w panel long, and I've only taken it off once since placing it in a temporary location while I figure out a permanent location for it. So far the panel has absolutely worked its socks off, but has not shown any signs of anything untoward happening. The wiring used from my panel to the charge regulator is larger in cross sectional area than the wires coming off the panel, and the rated output from the panel is also well within the capacity of the charge regulator. Up to now (about two months since the panel was new) I've never seen a charging rate in excess of 53 watts and this is used to charge battery's where there is a total capacity of 500 amp hours.