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3. CHARGING
This product is partially charged from the manufacturer. Fully charge the unit immediately after purchase.
In order to prolong the product life, be sure to fully recharge the unit after each jumpstaring, or every
1 month even if this unit has not been used. Recharge the unit as soon as possible to be activated and fully
charge it to ensure long battery life. In addition, we recommend not to charge and discharge the unit at the
same time.
CHECKING THE LEVEL OF THE INTERNAL BATTERY
To check the internal battery's charge status, press the Battery Voltage and % Indicator button (the screen
will turn off in 10 seconds). Charge the internal battery if the display shows it is under 100%.
NOTE: The internal battery's percent of charge is most accurate when the jump starter has been
disconnected from all devices and charging sources for a few hours.
AC Charging:
1) Insert AC charging adapter into charging jack of the unit.
2) Plug the other end of AC charging adapter into a wall socket.
DC Charging in Your Vehicle:
You may also charge the internal battery while driving, using a male-to-male charger cable.
1) Turn the vehicle engine on.
2) Insert one end of the accessory cable into the 12V DC power outlet.
3) Insert the other end of the accessory cable into the vehicle's accessory outlet (lighter socket).
NOTE: Using DC charging method to charge the battery overrides the maintain mode and the battery can
be overcharged. Monitor the progress of the charge by pressing the Battery Voltage and % Indicator
button and do disconnect immediately after battery is fully charged. Completely disconnect the
charger cable when the engine is not running.
HYJS-950
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