Bests & Worsts Reviews from Amazon

December 2018 Update After a couple bad experiences with other starters, I decided to try this one again now that it's the cool season. This new one works like a charm! Really easy to use with the LED display, and no guessing if it's charged enough. I still don't know how it's going to take the Fresno summer...If I don't add another update by the end of summer 2019, either it didn't blow up in the heat, or I was in the truck with it! ------- I almost ordered a replacement when I returned this. Instead, Ibdecided to stick with jumper cables and friends/random strangers with vehicles. I almost reordered because I think it is basically a good product and I just got a defective unit: out of the box it seemed sturdy and well constructed, it charged fine (20%/hr), it's still at 100% 24 hours later, the flashlight works and is very bright (I'm using it to drain the battery before I ship it back), the USB ports work. Only the jumpstart feature isn't working: and with all the stuff I get from Amazon that's bound to happen sometimes. So why not reorder it and hope for a working unit? Once I had the manual in hand, I noticed that there are lots of warnings about possible fires, including a warning not to subject it to "extreme" heat. Not sure what "extreme" means, but I noticed in the specs that the discharge temperature is -20 to 40C, a max temperature of 104F. I currently live in Fresno and the temperature is often over that during the summer and fall. Inside a vehicle it can easily hit 110F here. I suspect that Gooloo's lawyers would define that as "extreme" if the battery decided to burst into flames and immolate my vehicle and neighboring vehicles in the parking lot. It really doesn't seem worth the liability risk. Maybe once I've moved a little from the hellgate that must be heating things up here. Meantime, charging cables won't spontaneously combust just sitting in the car.