G'day Wes,

It took a bit of digging to get this information, however Dometic specified that the solar regulator on these panels is only compatible with Lead Acid, AGM and Gel batteries. If you're wanting to charge a Lithium Battery you'd need a solar controller compatible with Lithium Battery Packs.

G'day Terry, 

I've called Dometic to confirm that you can use this panel both with and without the regulator. On the van you can bypass the regulator and connect the short ends of the positive and negative terminals to whichever cable you have as an input for your van. You could then detach this and connect it to your vehicle via the regulator. It's not really set up for plug and play though so that would be something to consider.

G'day Wendy,

I've just double checked out display model of the 120W panel and the regulator is attached to the back of the panel. We're confident this is the same on the 180W panel.

G'day Mark,

The Dometic Portable 180W Solar Panel will only deliver 180W in perfect conditions, if its cloudy or there's shade, it won't work to its full capacity. It should be more than enough to run a fridge but keep in mind that you'll need a battery in between the solar panel to maintain proper power to your fridge.