bsinmich wrote:
Are you aware that you have to be holding the boost button down while trying to start the engine.
X2. Technically this is a solenoid activated jumper and like jumper cables often you have to let them sit for a minute or so to get enough amps to crank (depending on how depleted the batteries are). So, hold the button for a minute and continue holding while you crank the engine. Think of it this way, holding the button links the batteries, releasing, unlinks them. Hold the button as long as you would if you had cables and were trying to jump start a car. It's an automatic jumper cable button.