Dual Battery set up... What do I need to buy?

[bbollinger]

Bout my first boat last May (2015 Ar192) and went all season with one battery. I have the need for a dual battery set up and want to take care of that this offseason. Can someone talk me through what all I need to buy in order to get me going .

 

[RightStuff]

My post from awhile ago might help you get started, let me know if you have any questions.

https://jetboaters.net/threads/another-stereo-upgrade-and-dual-battery-upgrade-w-pics.5354/#post-91862

 

[ripler]

Easiest way to do it is with a off-1-2-combine switch and some pre-made battery cables from your local auto parts store.

 

[watdog]

Did it an an Sx210. Not sure if your boat has the built-in place for a second batter but mine did. Heres a link to the video I did

 

[marcham]

Do you want starting battery redundancy or seperate house vs starting loads? The easiest way to have starting redundancy is with a combiner switch as per above. On odd days use no 1, on even days use no 2.

 

[FSH 210 Sport]

This the OEM switch / DVSR that comes on the FSH 210 Sport. This will give you a house battery to connect all of your accessories to and leave your engine start battery isolated. Once you start your engine, the VSR (voltage sensing relay) will connect your engine start battery to your house battery after it is charged and then charge your house battery.

Square Battery Distribution Cluster for Single Engine with Two Battery Banks | BEP

Square Battery Distribution Cluster for Single Engine with Two Battery Banks

www.bepmarine.com

 

[bbollinger]

One "House Battery" to start the boat and the second to run all my accessories? So when I am running the boat will that second batter get charged back up again?

 

[FSH 210 Sport]

One "House Battery" to start the boat and the second to run all my accessories? So when I am running the boat will that second batter get charged back up again?

Negative.

The set up is a dedicated “start” battery, and a dedicated “house” battery. This way your “start” battery is isolated from any accessory loads like a stereo, vhf radio etc... and will always be fully charged and ready to start the engine.

When you start the engine and the voltage on the start battery reaches 13.7 volts aka charged by the engines, the VSR relay switch will close and connect the ”start” battery to the “house” battery and recharge the “house“ battery.

The “start” and “house” batteries will stay connected or in parallel until the voltage of the two paralleled batteries drops below 13.7 volts, then the VSR relay will open isolating the start and house batteries.

The emergency paralleling switch is there to bypass the VSR relay and paralkel the start and house batteries to start the engine should the start battery be insufficient to start the engine. After the engine is started and running for a few minutes then the emergency paralleling switch is turned off and all charging current from the engine goes to the start battery until it reaches 13.7 volts.

This set up will make sure you are not left with a dead start battery and unable to start the engines.

Make sense?

If you need a parts list let me know and I’ll make you a list!

 

[ripler]

One "House Battery" to start the boat and the second to run all my accessories? So when I am running the boat will that second batter get charged back up again?

If you don't want to use a VSR the switch i described above is the easiest solution. Hook all of the loads on the common terminal on the switch, hook battery 1 to terminal 1 and battery 2 to terminal 2 on the switch and wire all of the negatives together. I did what @marcham described above, alternated between the batteries on each outing.

 

[bbollinger]

A parts list would be helpful, trying to navigate through this and figure out what to buy first, then figure out and get help tp install it all

 

[FSH 210 Sport]

A parts list would be helpful, trying to navigate through this and figure out what to buy first, then figure out and get help tp install it all

Okay, we can get you set up with the OEM parts and such.

Can you post a pic of your battery compartment please?

Which Engine(s) does your boat have?

Getting knowledgeable professional help to install this set up is a great idea!

 

[Mxgirl1]

Negative.

The set up is a dedicated “start” battery, and a dedicated “house” battery. This way your “start” battery is isolated from any accessory loads like a stereo, vhf radio etc... and will always be fully charged and ready to start the engine.

When you start the engine and the voltage on the start battery reaches 13.7 volts aka charged by the engines, the VSR relay switch will close and connect the ”start” battery to the “house” battery and recharge the “house“ battery.

The “start” and “house” batteries will stay connected or in parallel until the voltage of the two paralleled batteries drops below 13.7 volts, then the VSR relay will open isolating the start and house batteries.

The emergency paralleling switch is there to bypass the VSR relay and paralkel the start and house batteries to start the engine should the start battery be insufficient to start the engine. After the engine is started and running for a few minutes then the emergency paralleling switch is turned off and all charging current from the engine goes to the start battery until it reaches 13.7 volts.

This set up will make sure you are not left with a dead start battery and unable to start the engines.

Make sense?

If you need a parts list let me know and I’ll make you a list!

Omg yes to me it does. I have that aet up. Can u reccomend a trickle charger and how to use it