This item is made by Clore Automotive, stating it is a US manufacturer.This item is their "top of the line" with heavy duty cables and heavy duty battery.The cables do not stick very well in the clip-on mount (built into the carrying handle), twisting them a bit helped.The unit comes with a one-time lifetime repair voucher of $50. Impressive, considering the purchase price.Checking out the details before and after purchase revealed severe issues when checking for proper operating and maintaining the unit.The manual(s) for the unit, either the one that came with the item or the one online, call for a immediate charge upon receipt of either 12 hours or 24 hours. The times for charging after use or regular storage differ dramatically as well.Contacted the manufacturer. Answer was that "it does not matter if 12 or 24 hours". So why wasting a 12 hour charge if it does not matter and the unit still has full capacity? Does it have full capacity? Answer "Should not be critical". What???Contacted the manufacturer again regarding maintaining the charge after use or when in storage. Was told that "it does not really matter", just charge it every 90 days.This is in complete contradiction to the 2 different manuals for this unit. Lack of quality, an American issue, still present.So what is there to do now? Sure it will start a vehicle once, then how is it supposed to be charged? How is it supposed to be charged when not in use? How long will it last?Well, it is a small and supposedly powerful unit, so lets wait and see.Update:Ran the 1000 amp battery on a conversion van completely down (listening to weather radio when the tornado hit a few weeks ago at a Michigan campground). Turned everything off in the car and attached the unit to the battery, then waited about 3 minutes (should be common sense, to allow electricity to float and settle). The little unit turned the engine over with no effort at all. It certainly provided a satisfactory effect first (by not being stranded) and a "wow" effect right after. Quite a accomplishment for a small unit like that.The unit was recharged for some hours calculated from the different statements the manufacturer made, somehow in the middle. The unit got us going, and for this price it might be worth keeping it.