Hello. The product arrived quickly the next day after ordering. When connecting, I did not find any shortcomings . But . The battery was completely discharged, I connected it according to the instructions, set the current to 14.5 and decided the amperage 3.4 with a small current. At first everything is fine, it showed the level of charge remaining in the battery, charging started, it stood for 4 hours and the display threw out that the charge was over))))) despite the fact that the charge is still in progress. By noise . I didn’t hear it at all, the device warmed up a bit, but the cooling was not on. Probably due to the fact that a small amperage was set and he charged without straining, the fan did not start. There is no smell from the device. Convenient. With its non-critical shortcomings, it is worth the money.