According to the FedEx sticker on the box, and on the tracking site, it says it is exactly 18.0 lbs.
Yes, I am glad for the bag too since the solar glass is on the outside of the unit when folded.
This will protect it better with other stuff rubbing up against it when packed in the rig.
I did not take it outside yesterday, and I had the drapes closed when shooting the pics, but there was enough light I guess to activate the charge controller.
The green LED on the back of it was lit up.
Read the short instructions that comes with it, very poor translation, but you get the idea of how to use it from reading it.
It is just a few pages printed out then folded book style, and whoever stapled it did a poor job, as it cuts off some of the words.