Jémettais considerable reservations about its effectiveness in its size (16.5cm x L. l. X 8cm h.3,5cm) weight (light) and the speed at which it can be charged (short charging time for power issued), and the positive comments I had read seemed very (too) praise to be true, but after trying it I must admit that I am impressed with its effectiveness.
The battery of my car (206 1.6l) was empty, the use extremely little surprising, so I tried the experience with the article above and to my surprise after connecting the clamps to my battery terminals HS, the LEDs are illuminated at full capacity in the first quarter key and the car started as with a new battery in less than a second, I said that the external battery is fully charged again after this operation.
I recommend strongly this.