Before the first use, the unit must be charged for 24 hours with a connection to an AC outlet (120V). Make sure that all of the switches are off. After that, stop charging when two red and one green LED Battery Status Indicators light.
If you are recharging the unit from a 12V battery, do not charge for more than 6 hours. (Check for a full charge by disconnecting the DC charging adapter and then press the Battery Power Level button.)
The manual for the Stanley J309 battery jump starter is available on the product page here:
http://www.baccusglobal.com/stanley/j309.php . The direct link to the manual is
http://www.baccusglobal.com/stanley/manuals/JUMPERS/J309%20MANUAL.pdf .
I hope this helps.
Cindy Wells
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