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Posting a reply to: RE: Dead Battery

Muskie Fishing -> Muskie Boats and Motors

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NPike

Posted 11/3/2016 6:13 PM (#835548 - in reply to #834990)
Subject: RE: Dead Battery

Posts: 612

Cold Cranking AMPS (CCA) is the maximum amperes that can be continuously removed from a battery for 30 seconds at 0°F before its voltage drops to 1.2 volts per cell (7.2 volts for a 12 volt battery).A 550 CCA battery can supply 550 amperes for 30 seconds at 0°F. This rating is only useful in the selection of engine starting batteries only.
The necessary CCA for a giving outboard changes with HP and even vendor. Consult your owner’s manual to see the minimum and make sure you exceed this by > x2, typically at least 550 amps will be needed depending on the size of the motor.
Run only minor low current assosories off the main engine starting battery. It’s highly recommended to run all accessories off the trolling motor battery if possible (leaving the stating battery for stating only) to avoid low voltage issues. Particularly in the cooler weather when batteries tend to hold less charge.
Charge both the starting and the trolling motor battery separately after each outing. As was mentioned this does not mean running the lake for a few miles in high throttle performing a quick charge, not a full charge.
BTW if needed I’ve had great luck with Interstates 29 and 31 series: they last long hold charge and are reasonably priced.
Good luck