The Minn Kota on board Bank Chargers offered at Anglers Kit n Kaboodle eliminate the need for rocket science.
Bank Chargers are designed to charge each battery individually. Thus eliminating the long charging time.
Bank Chargers can charge many batteries in the same amount of time that it takes to charge one battery.
Bank Chargers have individual 10 amp/12 volt outputs that connects to each battery.
Bank Chargers should have your batteries fully charged in about 10 hrs.
To see Minn Kota’s Bank Chargers
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Bank Chargers
Fishing with Minn Kota Trolling Motors and Chargers.
External curcuit current always flows away from the negative terminal of the battery to the Trolling Motor
and from the Trolling Motor back to the positive terminal of the battery.
Charging current from your battery charger flows internally within the battery
from the positive post to the negative.
Use a 12 volt charger to charge one battery.
Use a 24 volt charger for two series batteries.
Use a 36 volt charger for three series batteries.
Measuring from the first negative battery terminal to the last positive battery terminal will be the total output voltage. Remember also that your charger will hook to these same post.
To see our new line of Minn Kota trolling motors
Most common marine batteries have a capacity to output approximately 100 amps of current per hour.
That means that two series batteries have 200 amp capacity and three will have 300 and so on.
Armed with that information you can estimate the time it will take a 10 amp charger to fully charge your batteries.
(Most Marine batteries usually require a slow trickle charge.)
You can divide the total output current capacity from the batteries by the output current from the charger. Thus for three batteries in series with a 300 amp capacity and
charging current from the charger at ten amps/hr.
It will take 30 hrs.
Not rocket science here but you get the idea.