The thing is heavier than I expected. Not built flimsy. Definitely has a good built quality to it. Many features packed into this. Only thing missing must be kitchen sink. It took an hour to get a full charge. Comes about 50% charged from the factory. Not sure if the charge last for at least six months being in the car in the AU summer heat and cold winters. I haven't had a chance to do a jump start yet. Keeping it in the car just in case as I don't have an NRMA membership. Prices have come down on these items over the years. Appear to be a safer way to jump start the car