The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
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Rated 5 out of 5 stars
Needed to protect Car battery
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This reviewer received promo considerations or sweepstakes entry for writing a review.
This is needed so a portable item does not drain power from a Car battery when the car is not running.
I would recommend this to a friend
Rated 5 out of 5 stars
Saved my battery
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Posted .
This reviewer received promo considerations or sweepstakes entry for writing a review.
Work in the medical field and have to use a Koolatron cooler. This prevented my battery from dying. Love it!!
