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USER GUIDE
Battery Charger
with built-in flashlight and power supply
for 1 - 150Ah lead-acid batteries
Please read this user guide carefully before using the charger
Use protective eyewear when handling batteries
INTRODUCTION
Thank you for choosing a professional quality product from
MODERNUM! This advanced and user-friendly battery charger
will optimize performance and lifetime of your battery.
This intelligent and fully automatic charger can be used to
charge any type of lead-acid batteries, including AGM and GEL
types from 1 to 150Ah.
It can also act as a power supply in the 13.7V mode. It has a
flashlight that automatically turns on while not connected to
the battery.
Visit www.modernum.se for more info about us.

GETTING STARTED

1.
Connecting the charger: Connect the charger to the
supply mains. The flashlight in front of the charger will
automatically turn on to assist you in dark situations.
The battery terminal not connected to the chassis has to
be connected first. The other connection is to be made
to the chassis, remote from the battery and fuel line.
The red clamp should connect to the positive (+) pole of
the battery and the black clamp to the negative (-) pole.
For stand-alone batteries: Connect the charger to the
supply mains. Connect the red clamp to the battery's
positive (+) pole, and then the black clamp to the
battery's negative (-) pole.
2.
Select a charge mode, or 13.7V supply, by pressing the
selection button.
3.
A green light next to "full battery" symbol means the
battery is fully charged and has entered maintenance
mode (not applicable for 13.7V mode).
4.
After charging is complete, the charger will switch to a
Maintenance mode to keep the battery fully charged as
long as charger is plugged in to the mains.

INSTRUCTIONS

1.
Connect the charger as explained in GETTING STARTED,
point 1, above.
Smart 75

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Summary of Contents for Modernum Smart 75

  • Page 1 Use protective eyewear when handling batteries INTRODUCTION Thank you for choosing a professional quality product from MODERNUM! This advanced and user-friendly battery charger will optimize performance and lifetime of your battery. This intelligent and fully automatic charger can be used to charge any type of lead-acid batteries, including AGM and GEL types from 1 to 150Ah.
  • Page 2 Select the most suitable mode for your battery (refer to battery manual if in doubt) by pressing the selection button. There are 4 modes to choose from in the left column. A yellow light indicates the currently selected charge mode (for the 13.7V mode the light is green). If the red light turns on it means “FAULT”...
  • Page 3 CHARGING CURVE Reference charging time (hours) to 85 % capacity. Time varies with different batteries and conditions. 25Ah: 5h 75Ah: 9h 100Ah: 16h 150Ah: 24h Note: If left connected after step 5, it is programmed to restart from Step0 after 7 days, to refresh the battery. SAFETY This charger is made for charging 12V lead-acid batteries •...
  • Page 4 The charger is protected against overheating. If the • ambient temperature is too high, the charging current is reduced. During the charge, the charger may intermittently • provide a 15.5V charge voltage. Ensure that no equipment that may be damaged by this voltage level is connected to the battery during charging.
  • Page 5 them together with the included strap. Use the cloth bag to protect it while not in use. FAULTS INDICATIONS & TROUBLE-SHOOTING Fault: Red light (constant), Clamps connected to the battery. Probable cause: Reversed polarity protection activated due to clamps connected to wrong battery poles.
  • Page 6 Connect the desired new cable. Push it all the way. The flange should lock it. TECHNICAL SPECIFICATIONS Model: Smart 75 Type: switch mode charger, microprocessor controlled For battery types (12V) lead-acid (incl.
  • Page 7 CE MANUFACTURER DECLARATION Made by SM Power Innovations AB (SMPower) Product: Battery charger Smart 75 The manufacturer guarantees that the unit complies with the relevant standards. Tested and approved by Intertek. LIMITED WARRANTY We guarantee the quality of this product. It is made to meet high industrial production standards for electronics.

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