I have a Minn Kota MK315 onboard charger. It's a 3 bank charger mounted under the lid to the battery storage in the bow area of my 190 Bay. Today, when I went to connect the extension cord - one of the 3 banks had a red light ("check connection") light on - while the other two banks appeared to be charging. In the manual it states when this light comes on - you should disconnect the charger immediately, so I did.
We looked at all of the fuses and checked for continuity- everything seemed alright.
All the connections were fine, and previously - the charger worked fine. The manual also said that the light can come on when a battery has less than 8 volts. I checked each of the batteries: one was around 6 volts, one was around 11 volts, and one was around 9 volts. Is this normal for 3 brand new Optima blue top sealed batteries to have such varying volt levels?
Another bit of possibly relevant info. is: I was on vacation this week in Maine with no power to the dock, so I ran the trolling motor for several days without charging them. I ran them almost dead. These batteries are seperate from the starting battery, so I am assuming that they are not connected to the alternator charging system like the starting battery is.
For now, I am charging the battery with 6 volts on a separate charger (after having disconnected everything else). Hopefully, that will bring it above 8 volts, so I can hook them back up to the onboard charger. I would appreciate any insight that anyone may have regarding this scenario. Thank you. - Andrew
We looked at all of the fuses and checked for continuity- everything seemed alright.
All the connections were fine, and previously - the charger worked fine. The manual also said that the light can come on when a battery has less than 8 volts. I checked each of the batteries: one was around 6 volts, one was around 11 volts, and one was around 9 volts. Is this normal for 3 brand new Optima blue top sealed batteries to have such varying volt levels?
Another bit of possibly relevant info. is: I was on vacation this week in Maine with no power to the dock, so I ran the trolling motor for several days without charging them. I ran them almost dead. These batteries are seperate from the starting battery, so I am assuming that they are not connected to the alternator charging system like the starting battery is.
For now, I am charging the battery with 6 volts on a separate charger (after having disconnected everything else). Hopefully, that will bring it above 8 volts, so I can hook them back up to the onboard charger. I would appreciate any insight that anyone may have regarding this scenario. Thank you. - Andrew