The LED lights for the Alternator Charger indicate the state of the Alternator Charger.
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Normal LED Indicator Meanings | Error Conditions | Power Needs | Temperature During Operation
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Normal LED Indicator Meanings
- GREEN power LED: the ignitions is on.
- RED power LED: the input cord to the starting battery is connected in reverse polarity.
- YELLOW LED: The trolling motor battery(s) is(are) charging.
- RED on the output: The battery is connected in reverse polarity.
Error Conditions
- A RED power light is lit to indicate the input cord to the starting battery is connected reverse polarity.
- A RED light for each output is lit if any battery(s) is(are) connected reverse polarity.
- No YELLOW LED indicates the trolling motor battery(s) is(are) not charging. The starting battery needs to be at 13.6V for the Alternator Charger to start charging the trolling motor battery(s).
- No GREEN power LED indicates the ignition is not on, the ignition wire is not connected, or the ignition wire is not connected correctly.
Power Needs
For full output from the DC Alternator Charger, the minimum output from the engine alternator must include the following amperage from the alternator of the outboard motor.
- MK-1-DC: 12 amp minimum
- MK-2-DC: 25 amp minimum
- MK-3-DC: 35 amp minimum
Temperature During Operation
Minn Kota Chargers are designed to work within the limits defined in UL 1236 for marine battery chargers. The Minn Kota battery chargers can reach 150° F. They may get warm in an enclosed area. The maximum recommended room temperature for charging batteries is 122° F.
Even though the Minn Kota charger is capable of operating in a high ambient temperature environment, a minimum of six inches of unobstructed area should be allowed on all sides of the unit for proper air circulation and cooling. If the charger seems to get “hot,” try opening a hatch to help cool the charger. When the charger is hot, the output current will drop to protect the charger and the battery.
