However if you plan on having the outboard ever charge it or a common multi. Like grant said there isnt really such a thing as too many batteries.
Installing A Second Battery West Marine
Separate battery for boat stereo. And as long as your negative gets back to the battery either by grounding it to the boat somewhere neg lead would have to be touching the boat as well im not sure about using the other batterys negative. Currently i am running my hds12 and hds8 from my starter battery. My questions to the experts are. Find what you need for a boat stereo system. I will get a pro charger to charger the stereo batteries. Id use a 12 gauge wire.
The installation can be as simple as connecting two batteries in parallel to make one larger battery bank. I am thinking about adding a 5th battery to my boat dedicated only for these units. Just realize that a person touching the boat and touching the radio can become part of a circuit. Yes the systems will be completely separate. Adding another battery is a good idea if you want to add a powerful stereo subwoofer system cabin lighting electric windlass wakeboard ballast pump or any of the other electrical and electronic accessories we all want. Use one starting or dual purpose batteryflooded or agm to be the primarystarting battery.
Add a marine stereo system to your boat with best buy. The two common power measurements are cca cold cranking amps the number of amps a battery can deliver for 30 seconds at 0f while maintaining its voltage above 72 volts and mca marine cranking amps similar but measured at 32f instead of 0f. Well its just the same way as setting up a car stereo. 30 ft of each black and red 60ft total battery lugs 4 awg size i needed some with 14 hole some with 38. It either will work or it wont. All stereo stuff on the 2 battery bank and one batt to run the boat like factory minus the radio.
Then buy as many group 31 or pairs of golf cart batteries possible to become the stereo bank. If it is completely separate to never be charged by the motor to never have a single piece of metal in contact with anything associated with the motors electrical system in any way then yes by all means separate it. The reason that mca are 2025 higher than the cca is because batteries work. Would it be worth adding another 50lb battery into my boat to save the battery drain from my starter battery. As long as the pos and neg are reached somehow it wont effect anything. Maybe a group 24if it has the ccas required or a group 27.
Gallery of Separate Battery For Boat Stereo
