I love my Anker jump start car battery pack. It had saved me earlier in year when car battery died on my car. I posted about the experience in Facebook and some people were saying it would not work on bigger engine. So on Friday after Thanksgiving, my Tahoe truck would not start up (battery lasted over 8 years). Left it until Monday to take to replace and at that point nothing electrical was working on truck. I connected my Anker jump start battery, started the truck and left to store to get replacement. I LOVE my Anker jump start battery. Oh, and in a pinch it serves as a flashlight and can charge your phone too if you get caught without charge on the street. Since it has paid for itself already, I will be getting 2nd one for Christmas to keep one in each vehicle. I have the other car chargers in both cars by Anker but have to say that the car battery charger is top of my list.