when I put it on charge, I could not understand which button to press and where it is located, there are no instructions for all the buttons flush! I explain popularly, when they put on charging, the red light will light up - you need to press the button that is right along the length after the red light and 6 volts will light up again, press it will switch to 12 volts, and charging will start)) the charge will be fully carried out when the green light is on - I have it took 15 hours!
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