I've only used it once so far, and it performed flawlessly. Everything matched what was advertised and what I'd read in online reviews. Connecting it to an app on my Android phone was quick and easy. The range is adequate for me to manage the process from my apartment. The only inconvenience I noticed was the inaccurate calculation of the charging time. Initially, it indicated an 8-hour charging time, but after 2 hours, it suddenly showed only 1 hour remaining, which remained unchanged for another couple of hours. I suspect the device adjusts the charging time based on the battery's actual condition, so the figure is more of an estimate than a precise measurement. Consequently, I wouldn't rely solely on this figure to plan my car usage. While it's a pricier charger, it charges significantly faster than my previous one.