August 29th 2012 Verified user
If you want something that's going to charge your devices to full in our Irish or British weather, this isn't it.
First time I tried this product there was some light clouds, yet the battery level on my phone kept on falling rather than rising when plugged in.
The day after, it was quite a nice day, hardly any clouds in the sky and I even adjusted the panel every hour or so to follow the sun. It ended up charging my phone 22%, no more than that and it had been plugged into my phone for no less than six hours.