Outer Limits 4x4 Board

Hi,

I can see adavantages to both but lookign for some reasoning from imparshal minds.

Wire the winch up to the main or aux. battery?

what are your opinions?

Cheers,

Welchy

I have my winch (9500lb)connected to a 1000cca 100Ah AGM battery which is the auxilliary. (With a 100A alternator)
I think if I have to winch long enough to flatten that I want to be able to start the car when I'm done.
I also run accessories such as extra lights of the 2nd battery so I never have to worry about starting.
Not sure, but if your winch is drawing huge current out of your main battery, the alt is trying VERY hard to replace it straight away.
So basically, you would be using the alt and battery to winch instead of just battery and then having the alt top it up.
JustMHO.

if you are winchin isnt you motor running anyway? (no starting problems)

also once your car is running doesnt the solenoid pull in to charge the second battery anyway so they are linked?

WelchyGQ wrote:if you are winchin isnt you motor running anyway? (no starting problems)

also once your car is running doesnt the solenoid pull in to charge the second battery anyway so they are linked?

I thinks thats half the issue thou...you dont really want to be pulling 300 - 400 amps through your 100 amp solenoid (which comes with most dual battery systems)

Id tend to put the winch on the primary battery, and then just use a manual cut over on the 2nd if you need to jump start the car afterwards.

Draven wrote:

WelchyGQ wrote:if you are winchin isnt you motor running anyway? (no starting problems)

also once your car is running doesnt the solenoid pull in to charge the second battery anyway so they are linked?

I thinks thats half the issue thou...you dont really want to be pulling 300 - 400 amps through your 100 amp solenoid (which comes with most dual battery systems)

Id tend to put the winch on the primary battery, and then just use a manual cut over on the 2nd if you need to jump start the car afterwards.

What if you stall in a creek and cannot restart the engine? then you will be winching without the motor running.
My alternator is hooked to my start battery which has a cable running to the dual batt controller which is hooked to aux. battery. The winch cables run directly from the aux. batt, not through the controller. So there is no chance of overloading the 150A controller.
My controller charges the primary batt to 14.4V and then switches to the aux. They are never hooked together.

want33s wrote: My controller charges the primary batt to 14.4V and then switches to the aux. They are never hooked together.

What controller is it? Because most charge the main, then join the 2nd battery in to the main to charge both, meaning they are hooked together.

Cossie wrote:
What controller is it? Because most charge the main, then join the 2nd battery in to the main to charge both, meaning they are hooked together.

It's a GSL 150Amp electronic dual battery isolator.

want33s wrote: What if you stall in a creek and cannot restart the engine? then you will be winching without the motor running.
My alternator is hooked to my start battery which has a cable running to the dual batt controller which is hooked to aux. battery. The winch cables run directly from the aux. batt, not through the controller. So there is no chance of overloading the 150A controller.
My controller charges the primary batt to 14.4V and then switches to the aux. They are never hooked together.

In your situation where the controller charges one battery at a time, i guess winching from the aux doesnt matter... But i beleive the majority of the dual bat systems out there charge the starter and then 'link' the two batteries together.