The LED Indicators on the Digital Charger, lets you know the state of the charger.
Jump to:
- Normal LED Indicator Meanings
- Multi-Stage Charging
- Error Conditions
- Extension Cord Chart
- Resources
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Digital On-Board Chargers
Models MK 106D, MK 210D, MK 220D, MK 315D, MK 330D, MK 440D
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Digital On-Board Chargers
Normal LED Indicator Meanings
Each bank has the following LEDs:
- A solid RED LED indicates there is an issue with the battery connection.
- A flashing RED LED indicates an error.
- A solid YELLOW LED indicates the charger is in Bulk charging.
- A flashing YELLOW LED indicates the charger is in Absorption Mode.
- A flashing GREEN LED indicates battery is fully charged, in Maintenance Mode and ready to use.
- A solid GREEN LED indicates battery is fully charged, in long term Maintenance Mode and ready to use.
Multi-Stage Charging
Minn Kota’s Multi-Stage Charging delivers a fast, precise charge profile by automatically controlling current and voltage without overcharging your batteries.
- Bulk: During this stage, the charger delivers full current until the battery reaches ~75% charge (YELLOW LED) is lit to indicate the battery is charging in the Bulk Mode.
- Absorption: The charging current tapers down while the battery voltage is held at 14.4V (at 77° F). A flashing YELLOW LED indicates the battery is charging in the Absorption Mode.
- Maintenance: When the battery reaches full charge, the charger voltage is reduced. A flashing GREEN LED is lit to indicate the battery is in Maintenance Mode and ready to use. After 24 hours, the charger automatically turns off and a steady GREEN LED is lit to indicate the battery is in long term Maintenance Mode and ready to use. The charger will automatically resume charging when the battery voltage drops below 12.6V.
- For more information, you can also refer to the owner's manual.
Error Conditions
The LEDs can indicate why the charger is not working.
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Error Condition: RED LED is lit. Check connection.
Solution:- Check polarity of leads to battery
- Check connections to battery and fuses in output cord
- Check voltage at battery. The bank will not charge a battery below 4 volts or above 18 volts.
- If you still have issues, contact Minn Kota Technical Support.
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Error Condition: RED LED is flashing. Temperature sensor error.
Solution:- Reset the charger by unplugging the AC cord. Wait for all LEDs to turn off.
- Plug in the AC cord.
- If you still have issues, contact Minn Kota Technical Support.
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Error Condition: RED LED & GREEN LED are flashing. Battery may be damaged.
Solution:- Check to make sure there are not any loads on the battery.
- Check the fluid in the battery and add fluid if necessary.
- If the battery voltage does not rise above 10.5 volts in 3 hours, or if the absorption voltage does not increase to 14.4 volts (at 77F), the charger bank will shut down and will not charge. The battery should be tested.
- If you still have issues, contact Minn Kota Technical Support.
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Error Condition: Indicator LEDs will not illuminate.
Solution:- Check the AC power at the outlet.
- Make sure the GFCI (Ground Fault Circuit Interrupter) for the outlet has not tripped.
- If an extension cord is being used, check the AC power at the end of the extension cord.
- If you still have issues, contact Minn Kota Technical Support.
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Error Condition: Charger powers up and then turns off.
Solution:- If an extension cord is being used, check the AC power at the end of the extension cord.
- Extension cord AWG is too small - refer to the chart below for the correct extension cord to use.
- Very low AC voltage is supplied to the charger.
- If you still have issues, contact Minn Kota Technical Support.
Extension Cord Chart 
Resources
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Digital On-Board Chargers
Models MK 106D, MK 210D, MK 220D, MK 315D, MK 330D, MK 440D
