NOCO Genius G4 User manual

Welcome. Thank you for buying the NOCO Genius®G4.
Read and understand the User Guide before operating the
charger. For questions regarding our chargers, view our
comprehensive support information at www.no.co/support.
To contact NOCO for personalized support (not available in
all areas), visit www.no.co/connect.
What’s In The Box.
• G4 4-Bank Smart Charger
• (2) Battery Clamp Connectors
• (2) Eyelet Terminal Connectors
• (4) Extension Cables
• User Guide
• Information Guide and Warranty
User Guide
G4V2.0
PRIOR TO USE, READ AND UNDERSTAND
PRODUCT SAFETY INFORMATION.
Failure to follow the instructions may result
in ELECTRICAL SHOCK, EXPLOSION,
or FIRE, which may result in SERIOUS
INJURY, DEATH, DAMAGE TO DEVICE or
PROPERTY. Do not discard this information.
DANGER

Contacting NOCO.
About G4. The NOCO Genius®G4 represents some
of the most innovative and advanced technology on the
market, making each charge simple and easy. It is quite
possibly the safest and most efcient charger you will ever
use. The G4 is designed for charging multiple (up to 4)
12V lead-acid and 12V lithium-ion batteries, including Wet
(Flooded), Gel, MF (Maintenance-Free), CA (Calcium), EFB
(Enhanced Flooded Battery), AGM (Absorption Glass Mat),
and LIB (Lithium-Ion) batteries. It is suitable for charging
battery capacities from 2 to 40 Amp-Hours and maintaining
all battery sizes.
Getting Started. Before using the charger, carefully
read the battery manufacturer’s specic precautions and
recommended rates of charge for the battery. Make sure to
determine the voltage and chemistry of the battery by
referring to your battery owner’s manual prior to charging.
Mounting. The G4 has four (4) external holes for
mounting. Mount the charger in a desired location with
#6 self-drill screws. Make sure there are no obstructions
behind the mounting surface. It is important to keep in
mind the distance to the battery. The lengths of the DC
cable from the charger, with either the battery clamp or
eyelet terminal connectors, is approximately 142-inches
(3,600mm).
Charging Modes. The G4 has ve (5) modes per
bank: Standby, 12V NORM, 12V COLD/AGM, 6V NORM,
and 12V LITHIUM. Some charge modes must be pressed
and held for three (3) seconds to enter the mode. These
“Press and Hold” modes are advanced charging modes
that require your full attention before selecting. “Press
and Hold” are indicated on the charger by a red line. It is
1.800.456.6626
[email protected]
30339 Diamond Parkway, #102
Glenwillow, OH 44139
United States of America
Phone:
Email:
Mailing Address:

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important to understand the differences and purpose
of each charge mode. Do not operate the charger until
you conrm the appropriate charge mode for your
battery. Below is a brief description:
Mode Explanation
12V
NORM
Standby
12V
COLD/
AGM
14.8V | 1.1A | 2-40Ah Batteries
6V
NORM
7.25V | 1.1A | 2-40Ah Batteries
14.2V | 1.1A | 2-40Ah Batteries
Press & Hold
Press & Hold
No Power
14.5V | 1.1A | 2-40Ah Batteries
12V
LITHIUM
In Standby mode, the charger is not
charging or providing any power to
the battery. Energy Save is activated
during this mode, drawing microscopic
power from the electrical outlet. When
selected, an orange LED will illuminate.
For charging 12-volt Wet Cell, Gel Cell,
Enhanced Flooded, Maintenance-Free
and Calcium batteries. When selected,
a white LED will illuminate.
For charging 12-volt batteries in cold
temperatures below 50ºF (10ºC) or
AGM batteries. When selected, a blue
LED will illuminate.
For charging 6-volt Wet Cell, Gel Cell,
Enhanced Flooded, Maintenance-Free
and Calcium batteries. When selected,
a white LED will illuminate.
For charging 12-volt lithium-ion
batteries, including lithium iron
phosphate. When selected, a blue
LED will illuminate.

Using 6V NORM. [Press & Hold]
6V NORM charge mode is designed for 6-volt lead-acid
batteries only, like Wet Cell, Gel Cell, Enhanced Flooded,
Maintenance-Free and Calcium batteries. Consult the
battery manufacturer before using this mode.
CAUTION. THIS MODE IS FOR 6-VOLT LEAD-ACID
BATTERIES ONLY.
Using 12V Lithium. [Press & Hold]
12V Lithium charge mode is designed for 12-volt
lithium-ion batteries only, including lithium iron phosphate.
CAUTION. USE THIS MODE WITH CARE. THIS MODE
IS FOR 12-VOLT LITHIUM BATTERIES ONLY. LITHIUM-
ION BATTERIES ARE MADE AND CONSTRUCTED
IN DIFFERENT WAYS AND SOME MAY OR MAY NOT
CONTAIN A BATTERY MANAGEMENT SYSTEM (BMS).
CONSULT THE LITHIUM BATTERY MANUFACTURER
BEFORE CHARGING AND ASK FOR RECOMMENDED
CHARGING RATES AND VOLTAGES. SOME LITHIUM-
ION BATTERIES MAY BE UNSTABLE AND UNSUITABLE
FOR CHARGING. MAKE SURE YOU PURCHASE YOUR
LITHIUM-ION BATTERY FROM A WELL-KNOWN AND
REPUTABLE BRAND.
Connecting to the Battery.
Do not connect the AC power plug until all other
connections are made. Identify the correct polarity of
the battery terminals on the battery. The positive battery
terminal is typically marked by these letters or symbol
(POS,P,+). The negative battery terminal is typically
marked by these letters or symbol (NEG,N,-). Do not make
any connections to the carburetor, fuel lines, or thin,
sheet metal parts. The below instructions are for
a negative ground system (most common). If your
vehicle is a positive ground system (very uncommon),
follow the below instructions in reverse order.

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1.) Connect the positive (red) battery clamp or eyelet
terminal connector to the positive (POS,P,+) battery
terminal.
2.) Connect the negative (black) battery clamp or eyelet
terminal connector to the negative (NEG,N,-) battery
terminal or vehicle chassis.
3.) Connect the battery charger’s AC power plug into a
suitable electrical outlet. Do not face the battery when
making this connection.
4.) When disconnecting the battery charger, disconnect
in the reverse sequence, removing the negative rst (or
positive rst for positive ground systems).
Begin Charging.
1.) Verify the voltage and chemistry of the battery.
2.) Conrm that you have connected the battery clamps
or eyelet terminal connectors properly and the AC power
plug is plugged into an electrical outlet.
3.) The charger will begin in Standby mode, indicated by
an orange LED. In Standby, the charger is not providing
any power.
4.) Press the mode button to toggle to the appropriate
charge mode (press and hold for three seconds to enter
an advanced charge mode) for the voltage and chemistry
of your battery.
5.) The mode LED will illuminate the selected charge
mode and the Charge LEDs will illuminate (depending on
the health of the battery) indicating the charging process
has started.
6.) The charger can now be left connected to the battery
at all times to provide maintenance charging.