The online sellers who I know have consistently had good things said about their panels over a number of years are Bit Deals, who sell 'Rich Solar' panels and Low Energy Developments.
I have a Rich Solar panel among other ebay cheapies on my car. The Rich Solar starts charging earlier & stops later in the day than the others & is much more tolerant of shading.
If buying a 'kit', be aware that the cabling will be too thin, & should be used to tie your tomatoes up. Replace it with decent thickness cable - see the chart on this page for sizing the cable . The rear of a panel is a far from ideal spot to mount the regulator - you will get more charge into the battery if the regulator is close to the battery, not the panel. They get put on the panel with 'kits' for convenience, not efficiency. Efficiency is important with solar. If you can afford it, treat your batteries to a better regulator than comes with most kits. Something worthwhile doesn't have to cost an arm & a leg, I like Morningstar regs. This one would would be nicer to your battery than any of the kit supplied ones & would handle 160w of panel. With folding panels for portable use be aware of size & weight. Personally I reckon 120w (2 x60w) is about as big & heavy as it's practical to lift in & out of a vehicle & lug around.





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