I agree with Crappiemax's post. I've read in a couple different charger instructions that if all leads are not connected to a battery, the charger will sense a bad battery and show an alarm.
I spoke with Minn Kota tech and was told I could hook one lead to the battery, but was told not to hook the other lead up to the same battery, just to tape it up.
I may be getting older but I refuse to grow up.crappiemax, Crappkid LIKED above post
Thanks for the update