1. Heavy-duty battery clamps
2. Display button
3. Digital display
4. USB button
5. USB Port
6. Booster ON/OFF switch – 0 or 12V position for Model 12V / 0 or 12V or 24V position for
Model 12/24V
7. 12V DC socket
8. 12V DC charge port
9. 12V-2A charger
10. Power LED
11. Charging status LED
12. Bad Battery LED
6. CHARGING THE INTERNAL BATTERY OF THE BOOSTER
IMPORTANT: CHARGE IMMEDIATELY AFTER PURCHASE, AFTER EACH USE AND AS OFTEN AS POSSIBLE.
THE BOOSTER CAN BE LEFT PERMANENTLY CONNECTED TO THE AUTOMATIC CHARGER. NEVER WAIT
UNTIL THE BOOSTER IS COMPLETELY DISCHARGED BEFORE RECHARGING.
6.1.1 Digital Display on the Booster
When not connected to a vehicle battery and when the booster clamps are stored on their plastic
storage holders:
A-With the rotary switch in the OFF position: the digital display can be used to indicate the percent of
charge of the voltage of the booster's internal battery.
To check the internal battery's charge status, press the display button on the front of the booster. The
digital display will show the battery's percent (%) of charge. A fully charged battery will read 100%.
Charge the internal battery if the display shows it is under 100%.
B- With the rotary switch in the ON position: Select the voltage 12V (or 24V), the digital display can be
used to check the voltage level of the booster's internal battery. The display will indicate the battery's
voltage.
NOTE: The internal battery's percent of charge or Voltage level is most accurate when the booster has
been disconnected from all devices and charging sources for a few hours.
When connected to a vehicle battery AND the booster switch is in the OFF position:
C- The digital display can be used to indicate the vehicle's battery voltage. The display will indicate the
battery's voltage.
6.1.2 LED Indicators on the Charger
POWER (green) LED lit: The charger is connected to AC power.
CHARGING (yellow/orange) LED pulsing slowly: The charger is charging the battery inside
the booster or is in maintaining mode.
CHARGING (yellow/orange) LED flashing rapidly: The charger has detected a problem with
the battery. See troubleshooting section for more information.
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