There's no power

**dullbird** · 15th September 2012, 07:22 PM

Are you saying to parallel the batteries Deano or winch from the second battery.

Its my understanding its better to have your winch connected to the main battery not the second

**DeanoH** · 15th September 2012, 09:57 PM

Originally Posted by dullbird

Are you saying to parallel the batteries Deano or winch from the second battery.

Its my understanding its better to have your winch connected to the main battery not the second

I've got my winch(s) wired to operate from a battery couple/isolate switch which when turned off isolates the winch from the batterys which are isolated from each other (by the switch at any rate). When turned on the two batterys (identical optimas) are paralled and connected to the winch(s).

As winching draws a hell of a lot of current and can take some time I feel it's best to share the load across two batterys so as to stress them less and/or give more winching power capacity.

The switch I use is a Narva dual pole high current isolate switch. Good for 2X200 = 400 Amps continuous load (much more non continuous). It also couples as a good battery paralleling switch when needed.

Deano

**dullbird** · 15th September 2012, 10:01 PM

I agree very good way to do it.....its just that we have come across a feww people with the winch on the second but as I understand it maybe rightly or wrongly if you do a lot of winching then your battery doesnt recover as quickly because the second never gets the full charge form the alternator so the abttery flattens quicker enabling your winch useless if you really need it to get yourself out

would like to do what you have done with the batteries but dont know how to do it with the SC80 and 40 fitted

**DeanoH** · 15th September 2012, 10:49 PM

Originally Posted by dullbird

..........................................

would like to do what you have done with the batteries but dont know how to do it with the SC80 and 40 fitted

Narva make a high current dual pole battery isolate switch part no. 61060.

Battery Master - Products - Narva

Connect +ve from one battery to input of one pole and +ve of another battery to input of the other pole. It's best if both batterys are identical so they charge/discharge evenly. Strap the output of both poles together with a piece of brass bar and connect this to the winch.
With the switch off there is no physical connection between the batterys via the switch. Any charging electronics/solenoids or whatever is totally unaffected. The winch has no power to it as the switch is off.
When the switch is operated the +ve's of the two batterys are connected via the high current capable contacts of the switch and the brass bar and power is supplied to the winch.

Without knowing how your SC80/40's are connected I can't say what this would do to their operation when the isolate/couple switch was on but it would have absolutely no effect on them when switched off.

I don't use 'smart' electronic battery coupling devices. I have a simple battery coupling solenoid operated from the 'pulse' output from my alternator. When the engine is running at > 1000 rpm (or thereabouts) the solenoid pulls in and couples my batterys. It works well, simple and easy, if it breaks I can identify isolate and fix it. On the OKA I run three batterys, one is start only, two is 'rest of car' and engel fridge etc and the third is engel freezer only. Simple and reliable and works for me. Similiar setup on the 130 (when it's finished) but with 2 batterys only. Both vehicles have zero vehicle electronics which is what I like.

Having said that I don't think it will hurt your charge controllers but probably a good idea to check with Traxide just to be sure.

Deano

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