dual batteries

[Seahorse]

maybe i got it cheaper because boat is still coming from factory and dealer is going to fit prior to delivery

[BaysideMarine]

Fitting a VSR (Voltage Sensitive Relay) is the best way to go. No battery switches to fiddle with as the system works automatically, disconnects the second battery from the circuit when you pull up and reconnects the second battery when th eprimary battery reaches 13.7 volts.

Battery switches are in some ways agricultural and well behind.... VSR's are intelligent power management.

Cheers

[Seahorse]

thanks bayside. any extra in costs

cheers

[mirage]

Seahorse, good to see you ordered a 2nd battery. If you are ever intending to go offshore they are a must have!

[HarryO]

G'day Seahorse.

Two is much better than one.

The VSR set up only handles the charging circuits.

If you run two batteries without the ISO switch,
you either cannot run them independantly, and you cant use the
second battery to start the engine if the primary battery fails,
other than by swapping them.

The VSR determines where the charge flows automatically,
but you will still need the ISO switch if you want the ability
to choose which battery you want to start the engine with.

Harry.

[Seahorse]

thanks harry

[BaysideMarine]

Why would you want to choose which battery to start with? In a dedicated system there is a start battery and a house battery and they remain that way.

[HarryO]

Bayside,

No offence intended,

but for whatever reason you install a second battery(ies),
it makes sense to be able to have that power available
quickly to start the engine/s if needed, should the primary
start battery fail.

It is also wise, whether single,dual, or dedicated start / house
battery systems are fitted, that ISO switches are fitted to
each system.

I think that you would be hard pressed to find a qualified marine
sparky that would recommend otherwise, but, these days,
you never know whats around the corner as far as new
electronic tech is concerned.