I parked in my garage and accidentally left the trunk open overnight and the light drained my battery. The remote didn't even open the door, so very little power. I plugged it into my car and into an outlet in the garage and within hours my battery was fully charged! So thank you! Saved me money and will be great to have on hand for future emergencies. The only thing I don't like is that the plastic covers on the clips come off easily, but it doesn't affect performance. Goodbye!