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. Yes the systems will be completely separate.
Boat Batteries 101 Wired2fish Com
Separate battery for boat stereo. Then buy as many group 31 or pairs of golf cart batteries possible to become the stereo bank. My questions to the experts are. Maybe a group 24if it has the ccas required or a group 27. Would it be worth adding another 50lb battery into my boat to save the battery drain from my starter battery. Find what you need for a boat stereo system. 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.
However if you plan on having the outboard ever charge it or a common multi. It either will work or it wont. Well its just the same way as setting up a car stereo. The installation can be as simple as connecting two batteries in parallel to make one larger battery bank. All stereo stuff on the 2 battery bank and one batt to run the boat like factory minus the radio. Like grant said there isnt really such a thing as too many batteries.
Currently i am running my hds12 and hds8 from my starter battery. 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. 30 ft of each black and red 60ft total battery lugs 4 awg size i needed some with 14 hole some with 38. As long as the pos and neg are reached somehow it wont effect anything. Add a marine stereo system to your boat with best buy. Use one starting or dual purpose batteryflooded or agm to be the primarystarting battery.
The reason that mca are 2025 higher than the cca is because batteries work. I will get a pro charger to charger the stereo batteries. Just realize that a person touching the boat and touching the radio can become part of a circuit. I am thinking about adding a 5th battery to my boat dedicated only for these units. 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. Id use a 12 gauge wire.
Gallery of Separate Battery For Boat Stereo
