I bought this NOCO GB70 few months ago and finally got a chance to test it out. My initial thought was this is just a crap and then I read the instructions. So here is my story: I have a 2006 Honda Odyssey and the battery was completely dead. I attached NOCO to the battery, turned on the power and attempted to start it but it did not work. I unplugged it and tried it two more times and did not work again. So I read the instructions which said that in order for this unit to detect the batttery and automatically turn on the booster, the battery should have at least 2A power. In order for thi to work I had to manually override the boost system is just a push of a button (hold the boost power button for about 3 seconds). As soon I pressed the manual boost button, that's all she wrote. The van started right up without an issue. Since then I have used it three times on the same van without an issue (I don't drive the van enough for it to charge the battery :().
So, finally, I am able to say that I love this product and would recommend it to anyone who is thinking about getting a jumper cable without having other vehicles around.