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VEC1090 A
REV101103
CHARGE RATE SELECTION VEC1090 A
After charger clamps are correctly connected, plug in the charger to an AC outlet and the charger will show a circulating
pattern on the Digital Display. This pattern indicates power is applied. Press the ON/OFF switch button to prepare the
charger to change to an operating mode. Press the 2/10/20 switch button and the charger will begin charging at 2
amps. Pressing the 2/10/20 switch again will advance the charge rate to 10A, then 20A. Pressing the switch again will
turn OFF the charger output and the display will show “000”.
CONNECTING IF BATTERY IS INSTALLED IN A VEHICLE
a) Check polarity of battery posts - For top-mounted battery posts, the Positive post (marked POS, P, +)
usually has a larger diameter than the Negative battery post (marked NEG, N, -). Side-mounted battery posts are
marked Positive -red and Negative -black.
b) Attach charger clamps to battery connections, as follows, ensuring a good connection (if there is a mistake, the Reverse
Polarity Indicator will light):
NEGATIVE-GROUNDED VEHICLE:
Connect the POSITIVE (RED) charger clamp to the
POSITIVE (POS, P, +) ungrounded battery terminal. Then, connect the NEGATIVE (BLACK) charger clamp to the vehicle
chassis, or the engine block (away from the battery). Do not connect the clamp to the carburetor, fuel lines, or sheet-
metal body parts: connect only to a heavy gauge metal part of the frame or engine block. NOTE: NEGATIVE-
GROUNDED type systems are the most common in today's vehicles.
c)
Set charger's charge rate to appropriate setting 2/10/20A according to battery size.
POSITIVE-GROUNDED VEHICLE:
Connect the NEGATIVE (BLACK) charger clamp to the NEGATIVE (NEG, N, -)
ungrounded battery post. Then, connect the POSITIVE (RED) battery clamp to the vehicle chassis or engine part (away
from the battery). Do not connect the clamp to the carburetor, fuel lines, or sheet-metal body
d) Plug battery charger power cord into grounded AC power outlet and refer to Appendix A at the end of this manual
for approximate charging times.
e) When charging is completed, disconnect cables and clamps in reverse order they were connected.
• Before using any extension cord, ensure that the wire size is at least 12 AWG for up to 100 feet and 10AWG for longer
than 100 feet.
• Only use a good quality, good condition, UL-listed extension cord.
ALWAYS connect charger to the extension cord before plugging the extension cord into a 110/120VAC power outlet.
The use of a poor quality extension cord or one that is not in good repair could cause fire and/or electric shock.
• Use a three-wire extension cord with a 3-prong plug and 3-conductor socket.
NOTE:
Each time the charger rate is changed, the charger sounds a BEEP. The only time the selected charge rate
does not display at the full selected rate is when the battery is nearly full and charging at either step two or
three.The display will be showing a slowing charge rate. To return to 2A, press the 2/10/20 button. When
the battery is fully charged, the charging Complete LED is lit and “FUL” is displayed on the Digital Display.
NOTE:
The NEGATIVE-GROUNDED system is the most common in today's vehicles.
NOTE:
When using an extension cord, observe the following important safety information:
