Most efficient portable solar panel for tent camping?

[Carlos]

My trailer has a fixed solar panel mounted to the roof. However we are out tent camping right now and need a efficient (effective) way to recharge my portable battery. So after a portable solar panel, can you point me in the direction of one that is efficient and does the job please?

 

[smritte]

You can look up all the specs on all the portable panels, do the math and find out, overall, there's so little difference when your talking under 500 watts that I just grab something that folds down to the size I need. I have a nice Amazon folding I keep as a backup in my trailer in case Im in the forest (parked in shade). I think its 180-200 watt. On the other hand, if you go big name brand, you spend double and get ~.5 watts more.