Sinergex Nitro 3500 User manual

Digital Intelligent Battery Charger
OPERARATOR’S MANUAL
TM

WARNING! Before you install and use your Nitro
Battery Charger, be sure to read and save these safety
instructions.
INTRODUCTION
The Sinergex Nitro 3500 is member of the family of advanced
battery chargers manufactured by Sinergex Technologies.
Nitro chargers will increase your battery’s performance and
prolong its life. Please carefully read and follow the following
safety and operating instructions.
The Nitro is controlled by a 12-bit AD microprocessor with
4-stage charging characteristic for charging batteries
automobiles, motorcycles, snow mobiles, tractors, personal
watercraft, boats etc.
Suitable for charging for common Lead Acid, AGM, Gel,
Sealed and Maintenance Free batteries
NITRO 3500 Intelligent Battery Charger with 5.3 AMPS RMS
– Charges 6 or 12 VDC Batteries. 3.5 AMPS DC (5.3 A RMS)
– Automatic and Intelligent 4-Stage Charging Curve

Soft Start: Initial battery test to determine battery condition. If the
battery is severely discharged charger will begin the Soft Start
stage. Charging starts with reduced current until battery voltage
reaches 12V.
Bulk: Major charging stage where the battery receives the
majority of its charge. During this stage the battery brought to
75% - 80% of its charger. The NITRO charger delivers maximum
current until the terminal voltage has risen to the set level of 14.5V
for Normal battery selection and 14.2V for Gel battery selection.
Absorption: Completes the charge up to virtually 100% at a
constant voltage of 14.5V (GEL 14.2) at +25°C. The current
tapers off after the current reached the minimum level.
Float: Maintenance charging at constant voltage, keeping the
batteries at 100% charge. Normal charging mode is time-limited
(max 10 days) while Float mode chargers indefinitely without
damaging the battery.
Features:
– Anti Spark Protection
– Short Circuit Protection
– Voltage Compensation
– Temperature Compensation (5-6 Temperature Settings)
– Battery and Charger Overheating Protection
– Reverse Polarity Protection
– Waterproof ABS Housing. Ingress Protection Rating IP65

Touch Panel Indicators:
– REVERSE – Reversed Polarity
– FAULT – Battery Fault
– ON – Charger is Connected to AC Power Supply
– CHARGING – Battery Charger is Charging
– BATTERY CHARGED – Battery is fully charged and Charger
is supplying the Float or Maintenance Charge
GENERAL SAFETY PRECAUTIONS AND PRE-CHARGER
CHECK LIST
Do not install the Nitro Battery Charger in a zero-clearance
Compartment, overheating may be result.
To avoid risk of fire and electronic shock, make sure that existing
wiring and power cable are in good electrical condition. Do not
operate the Nitro charger if the wiring or power cable is damaged
in any way.
If the AC power cable is damaged, it must be replaced by the
manufacturer or its service agents or a similar qualified person to
avoid hazard and further damage
Do not charge non-rechargeable batteries.
During charging, the battery must be placed in a well-ventilated
area.
The battery charger must only be plugged in to an earthed
AC outlet.

If the battery needs to be removed from the vehicle before
charging, always remove the grounded terminal from the battery
first, also ensure that all accessories in the vehicle are tuned off to
prevent arcing.
Ensure the battery terminals are clean.
Always refer to the manufacturer’s instructions regarding charging
and charging rates and battery maintenance.
OPERATION
1. CONNECTION
If Battery is Installed in a Vehicle
Check polarity of battery terminals – for top mounted battery
terminals, the Positive post (marked POS, P, +) usually has a
larger diameter than the Negative battery post (marked NEG, N,-).
For side mounted battery connections, the terminals are marked
Positive (RED) and Negative (BLACK).
Attach charger clamps to the battery terminals, ensuring a secure
connection. If charger clamps are not secure or connected
incorrectly, the Reverse Polarity Indicator on the front panel will
illuminate.
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.

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 parts: connect only to a heavy gauge, stable metal part of the
frame or engine block.
Plug battery charger power cord into grounded AC power outlet
and the Nitro is now ready for the charging process.
The Nitro’s LED indicators will light to show power the charger.
Using the Simple Touch panel, select the battery’s voltage, 6 or 12
Volts, and select the battery type, GEL or Standard.
The Nitro will now automatically assess the condition of your
battery and deliver the optimum charge.
When charging is completed, disconnect power cable from the AC
power and disconnect cables and clamps in reverse order from
which they were connected.
If using the Nitro for maintenance charging, leave charger
connected to the battery and the Nitro will keep your battery at the
optimum level of charge.
If Battery is Outside of Vehicle
Check polarity of battery posts. For top mounted battery
connectors, the positive post (marked POS, P, +) usually has a
larger diameter than the negative battery post (marked NEG, N, -).
For side mounted battery connections the positive (+) terminal is
RED and the negative (-) terminal is BLACK.

Connect the Nitro’s positive (+) RED battery clamp to the positive
(+) battery terminal.
Stand as far back from the battery as possible, and do not face
battery when making final connection.
Carefully connect the negative (-) BLACK charger clamp to the
negative (-) BLACK battery terminal. Ensure connection is secure.
Connect the charger’s AC power cable to a grounded AC power
outlet.
Nitro’s LED indicators will light to show power the charger. Using
the Simple Touch panel, select the battery’s voltage, 6 or 12 Volts,
and select the battery type, GEL or Standard.
The Nitro will now automatically assess the condition of your
battery and deliver the optimum charge.
When charging is completed, disconnect power cable from the AC
power and disconnect cables and clamps in reverse order from
which they were connected.
If using the Nitro for maintenance charging, leave charger
connected to the battery and the Nitro will keep your battery at the
optimum level of charge.
2. CHARGING
Once you have connected the Nitro battery charger to AC power,
it will sound a tone for 0.5 seconds and the Simple Touch power
panel LEDs light for two seconds.
Connection with reversed polarity – If the DC battery clamps
are connected improperly to the battery terminals, the Reverse

Polarity LED will indicate the reversed polarity. The battery
charger’s warning buzzer will also sound. If this occurs simply
disconnect the battery charger from the AC power connect the DC
clamps correctly to the battery terminals. Reconnect the charger to
the AC power.
The battery charger is now in the Standby operating mode and
the “12V”, “GEL” and “ON” LEDs are illuminated. This is the
standard charging mode and as soon as the START button is
pressed, the charger switches immediately into the 12V GEL cell
battery charging mode.
If you require an alternative selection, proceed as follows:
Step 1 – Select the desired battery voltage. 6V or 12V.
Step 2 – Select the battery type. GEL or Standard. “GEL” or
“STD”.
GEL indicates a common Maintenance Free battery, e.g. Gel Cell,
VRLA, AGM & etc. STD indicates a common lead acid battery or
calcium battery.
Step 3 – Press the “START” button to begin charging the battery.
Battery Fault – A few seconds after switching on to the operating
mode, the LED indicator “FAULT” will illuminate if the following
occurs:
A. Low battery voltage - < 3 V
B. High battery voltage - > 15 V (12 V battery) / > 7.5 V (6 V
battery)
C. Battery short circuit or battery cell short circuit
D. Wrong choice of voltage for the battery
Under these conditions, the battery charger will stop charging. In
the event of A, B or C, the battery may be defective and we

advise you to consult your nearest battery service centre. If the
problem is attributable to D, all you have to do is select the
appropriate voltage and proceed to charge the battery.
3. WHEN THE BATTERY IS COMPLETELY CHARGED
When the LED “FULL” illuminates, the battery is completely
charged. The battery charger now switches to the Float mode and
doesn’t require your attention until the next time it is used. The
Nitro battery charger will automatically maintain your battery.
When the AC plug is removed from the power supply connection,
the battery charger switches off.
The battery charger automatically switches back to the “Stand By”
mode if the charger DC clamps are removed from the battery while
the AC cable is still connected to the AC power supply.
CHARGING TIME
The table below is a guide to the typical charge time for different
batter sizes of 6V/3cells or 12V/6cells battery:
Battery Size
Charging Time
20Ah
6 hours
24Ah
7 hours
30Ah
9 hours
36Ah
10 hours
44Ah
13 hours
55Ah
16 hours
75Ah
20 hours
IMPORTANT SAFETY INSTRUCTIONS

GASES
When a NORMAL/LEAD ACID battery is being charged you may
notice bubbling in the fluid caused by the release of gas.
WANRING, THIS GAS IS FLAMMABLE. ENSURE THERE ARE
NO NAKED LIGHTS OR SPARKS.
During the charging process, the charger and battery must be
placed at a well ventilated area. DUE TO RISK OF EXPLOSION,
ONLY CONNECT AND DISCONNECT THE CHARGER DC
CLAPMS WITH THE BATTERY WHEN THE CHARGER IS
DISCONNECTED FROM AC POWER!!!
Types of Batteries
This charger is only suitable for charging the specified batteries
and should not be used to recharge non-rechargeable, NICAD or
any other type of battery.
POINTS OF NOTE
When not in use, the battery charger must be kept at a dry area to
avoid moisture. Keep away from any liquid, rain or snow at all
times.
This battery charger is not designed for installation on to the
vehicle as a fixture.
WARNING
Avoid getting ELECTROLYTE (Battery Acid) on your skin or
clothes. It is acidic and can burn skin. If this occurs, rinse the area
of contact immediately with running water.
Never charge a frozen battery. If battery fluid (electrolyte)
becomes frozen, bring battery into a warm area to allow battery to

thaw before you begin charging.
Never set a battery on top of charger or vice versa.
Avoid touching the battery clamps together when the charger is
on.
Never operate charger if it has received a hard blow, been
dropped, or otherwise damaged. Take it to a qualified professional
for inspection and repair.
Be sure to position the charger power cord to prevent it from being
stepped on, tripped over, or damaged.
Never pull on the AC power cable to remove AC plug from the AC
power outlet. Pulling directly on the cord may cause damage to the
cord or the plug.
If the supply cord is damaged, it must be replaced by the
manufacturer, its service agent or similarly qualified persons in
order to avoid a hazard.
ENVIRONMENTAL PROTECTION
Waste electrical products should not be
disposed of with household waste.
Please recycle where facilities exist.
Check with your local authority or retailer for
recycling advice.
WARRANTY

Sinergex Technologies warrants this product for a period of 2
years from the date of purchase to the original purchaser.
Warranty is not transferable. Warranty covers defect against
workmanship and materials only. To obtain warranty service,
please return the unit to the place of purchase or authorized
Sinergex dealer together with your proof of purchase. The
warranty is void if the product has been damaged or not used as
described in this manual. Warranty is void if a non-authorized
repair has been performed. Sinergex Technologies makes no
other warranty expressed or implied. Sinergex Technologies is
only responsible for repair or replacement (at Sinergex
Technologies’ Discretion) of the defective product and is not
responsible for any consequential damage or inconvenience
caused by the defect.

SINERGEX TECHNOLOGIES L.L.C. (USA)
WWW.SINERGEX.COM