Product arrived very quick around in 3- 5 days. Charged - 4 bars. Packed well, package composition as described. I charged Jump Starter battery fully- to 5 bars. Tested Jump starter function: 1.8 petrol atmosferic, car not used for 6 months, acid battery fully discharged- 11.1V (battery temperature 11oC- installed before the test) Ambient/engine temperature minus 5oC. Car engine started in 2- 3 secs. Jump starter shows 5 bars after test. Vires material/insulation soft in minus 5oC, clamps- strong force. Tested with UM34C and load USB connection directly- 0.5A- 5.07V, 1A- 5.06V, 2A- 5.03V, 2.5A- 5V, 2.97A- 4.99V and more- battery shuts down. USB measurement using original cable- 0.5A-5.01V, 1A-4.92V, 2A- 4.77V, 2.5A- 4.68V, 3A 4.59V, and more- battery shuts down. Cable 50 cm internal resistance 0.129 om. DC12V output- measured 12V . Light was tested in dark room- strong illumination, should be enough. Very good product- recommend.
Good store. Fast delivery. I recommend to everyone