Works quite well. I go through quite a few of these because I push them pretty hard. They're wired straight into my batter through my car and this has a toll on things for not only my inverter, but my car battery (certainly seems to take a year off my battery life). Yet, it's great to be able charger phones and plug in heavy appliances. Passengers can literally play PS4 in my car. So, I may push everything to the limit, but it's totally worth it. This particular inverter hasn't died under the pressure yet!