MotorGuide BATTERY CHARGERS - Manual (Page 6)

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O V E R V I E W
FULLY AUTOMATIC CHARGING OVERVIEW
When the MotorGuide Battery Charger is turned on the blue AC power indicator with turn
on followed by the red charging LED indicator.
The automatic charger will provide the following:
MotorGuide Charging and Conditioning - Red and Blue LED On
During this mode the unit will use its available charging amps until battery voltage is raised
to 14.1 VDC (safe for Lead Acid or Gel batteries).
The unit will charge batteries to 14.1 VDC to complete charging while conditioning batteries.
Upon completion the charger will go to into its maintenance mode.
AC POWER AND CHARGING LED STATUS INDICATORS
The MotorGuide Battery Charger includes three LED indicators as shown below.
1) AC Power on: blue
2) Charging: red
3) Ready/Maintaining: green
When on, the blue LED remains on and the red LED indicates the unit is in its Automatic
Charging Mode. When charging is complete only the green LED will remain on.
GENERAL OPERATION
Install your MotorGuide - Fully Automatic / On-Board Marine Battery Charger to the guidelines
in this manual.
Make sure your charger and batteries are properly vented. Connect your extension cord with
no AC Power present to the battery charger and proceed to plug your extension cord in at a
nearby 120 VAC GFCI protected (Ground Fault Circuit Interrupt) outlet.
With your MotorGuide Battery Charger plugged in properly, it will automatically charge your
batteries while it conditions and extends the life of your batteries. When you are not at home
always leave your charger plugged in to reduce sulfate buildup allowing your batteries to be fully
charged and maintained until your next fishing trip.
TROUBLE SHOOTING GUIDE
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T R O U B L E S H O OT I N G
No Blue, Red or Green LED Indicators
Check for loss of AC power at the 120VAC Ooutlet. Confirm GFCI (Ground Fault Circuit
Interrupt) outlet has not tripped. Check with a meter or 120VAC test light that AC is
present at the end or your extension cord.
Confirm all charger cables are installed with the correct polarity connections at each
battery and that all connections are clean and tight.
With the AC Power removed and the engine off, check the charge level of each battery
with a DC meter or handheld DC tester. If there is no charge level indication for a battery,
check each battery with a hydrometer to determine if it has one or more bad cells.
(batteries should always be replaced in sets, and always the same type.)
If everything above checks out ok, contact MotorGuide for product service.
Batteries are not Charging, but Blue and RED LED Indicators are “on”
Confirm all charger cables are installed with the correct polarity connections at each
battery, and that all connections are clean and tight.
Reverse polarity connections will
blow output fuse, resulting in no output voltage.
With the charger on, read DC voltage at each battery. If any of the readings are less than
13 VDC Proceed with the following:
A. Disconnect AC power at the 120VAC outlet.
B. Remove charger cables from each battery.
C. Reconnect AC power and read DC Voltage across each output cable, if output voltage
is approximately 14.1DC the charger is ok and each battery should be tested with a
hydrometer with the charger and engine off to determine if one or more batteries have
bad cells. (batteries should always be replaced in sets, and always the same type.)
D. If there is no output when trying to read DC voltage check each output fuse and replace
as needed.
If the DC voltage at each charger output is less than 13.0 volts contact MotorGuide for
product service.