Options to Increase My Boat's Deep Cycle Battery Capacity
April 2, 2023 · 4 min · 4K views
What this video covers
Jeff Cote evaluates three methods for increasing the deep cycle battery capacity on a 31-foot boat currently equipped with two 79-amp-hour group 24 AGM batteries.0:15 The owner considers adding a third group 24 AGM, upgrading to two group 31 batteries at 105 amp hours each, or installing two 6-volt golf cart batteries wired in series.1:20 For dedicated deep cycle applications, Cote recommends the 6-volt golf cart battery configuration due to its superior design for deep discharge cycles.2:09 When wiring two 6-volt batteries in series, the voltage doubles to 12 volts while the amp-hour capacity remains equal to that of a single 6-volt unit.2:36 If the battery bank serves a dual purpose as both a starter and a deep cycle source, the owner must prioritize marine cranking amps or cold cranking amps to prevent voltage sag during engine starts.3:21 Physical space constraints and the specific electrical load requirements dictate the final selection between these battery types.3:14
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