Saw this in the repco catalogue. These are very handy around camp. I use one for lighting only,
inside mine is an 18AH motorbike size battery that will do a whole weekends lighting. I usually plug it into the solar panel during the day, but it's never failed me yet. I also use it on light poles I make, around camp, poles are extendable and hold a versa style flouro and a showerhead, but dont use flouro anymore. If for some reason it gets dark while cooking we just take a light pole and the battery pack over to the fire. also use it at the river bank, not heavy to move and using LED flood lights I'll never run out of battery. You could also mount it fixed inside your pods, camper etc. but I like mine to be portable.
Paid more than $42 for mine they used to be $90 from memory, it also has battery condition check light.