Looking for Electric Cooler with Built-In Battery. Know of any?

I’m trying to find a decent priced electric cooler that also has a built-in battery so can continue cooling while not plugged in over night. I know about the X3 Lithium and the Dometic but bit outside my price range. Somehow electric coolers with built in batteries are hard to find. Think they would all have a built-in battery to use on beach etc but hardly any of them do. Please inform me of any that you know of! Thank you!! 

There are no answers yet.
Be the first to answer this question.