Boat 2 Battery Setup

To add a second deep cycle battery for additional power with two batteries and a 1 2 all two bank manual switch already installed in your boat you have all the basics in place to add as much battery power as you want.

Boat 2 battery setup.

Install the second battery to the boat. I allows your house and start battery to remain isolated except for emergency conditions. Negative to negative and positive to positive. The next day switch the battery switch to the 2 position and run the boat.

Proper battery management including switching and charging is essential for safe and reliable operation. Connect the positive red port from the engine battery to the number 1 position on the switch. Batteries are at the heart of the electrical systems found on any boat or vehicle. Make sure the dual battery switch is designed for two batteries some are.

Boats often need two banks to have a reserve bank to be sure the engine will start or to have a large house bank so you can run bigger dc loads for longer time periods. However some battery management discipline must be excersized. The following basic wiring diagrams show how batteries battery switches and automatic charging relays are wired together from a simple single battery. Install your battery switch in an easy to reach location near the battery installation.

How to install a marine dual battery setup for your boat 1. Mount the switch directly to the hull inside the engine compartment. The typical battery management scenario consists of placing the dual battery switch in the 1 position and running the boat for the day. Used to shutoff everything and prevent trickle charges from draining your battery view our battery switches.

Choose a marine battery that meets the engine specs. All you need now is some space a few basic tools a little knowledge and another battery. In this video i go over dual boat batteries with a battery selector switch electric trolling motor systems and how to wire and install them along with an o. Use the hardware that comes with the switch to insure proper connections.

You can connect your load to one of the batteries and it will drain both equally. If your boat came from the factory with only one battery or with two batteries of inadequate size consider installing a second battery bank. This is about as simple as it gets and is an effective setup.