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User rating, 5 out of 5 stars with 2 reviews.
Rating 5 out of 5 stars with 2 reviews
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Rating 5 out of 5 stars with 1 review
This is needed so a portable item does not drain power from a Car battery when the car is not running.
Work in the medical field and have to use a Koolatron cooler. This prevented my battery from dying. Love it!!
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Asked 5 years ago by Anonymous.
Answered 4 years ago by SweetPeaTwo