So goodbye to the old days of jumper cables! I bought myself one of these about 4 or 5 months ago. Noco seems to be the best but there are tons of companies making them now. The build quality is excellent. So I have had it sitting in my garage after the first initial charge and it's still at 100%. Well the other day my Dad brought their vehicle over and left the lights on and it was dead so I got to try it out and it worked flawless. No more having to carry about those heavy jumper cables and having to pull another vehicle up. It also comes in handy when you don't have room to get another vehicle close to connect cables. I think everyone should have one of these in their garage for that 'just in case' moment. I also noticed Amazon has them on sale for cheap now. When I bought mine I paid $100.