To calculate the overall star rating and percentage breakdown by star, we don’t 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 analyzes reviews to verify trustworthiness.
I have been happy with this UPS and it’s battery but when I received a replacement battery I discovered that unlike APC they don’t have a program for recycling the old batteries. I’ll stick with APC in the future.