In an effort to reduce cost I have gone for a 300W inverter from Screwfix (about £35). I don’t actually need a high wattage inverter as the only things we intend running on electric are the LED lights and maybe charge a phone or laptop although we seldom do while away… we don’t watch TV while in the Van! I would rather have a branded model inverter that pushes out a pretty clean supply rather than a cheap eBay one that pushes out filth and can trash sensitive electronics (if we ever use them!). The only down-side with this one is that it is quite loud, hopefully this will greatly drop off when I get it all boxed away nicely.
If you are not sure what an inverter is… it attaches to a Leisure Battery and has a normal domestic 13amp socket so you can run powered devices while out and about!
A Pure Sine Wave Inverter is much much cleaner than theel cheapo nasty one that I bought but I figured most of my stuff including phones and laptops will charge straight off DC rather than DC-AC-DC.