To calculate the overall star rating and percentage breakdown by star, we do not use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
Arrived on time and works well. One ‘complaint’ - the clamps need to be larger to accommodate the terminals on the car battery. I had to set the clamps on the bolt that secures the cables to the battery. Seemed to charge slower but I am satisfied with the product.