Mark.W 
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Registered: 3rd Jan 07
 Location: County Durham 
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Any one use them?With my car garaged for over the winter the battery keeps going flat and im having to jump start it each time i go up and want to move it or work on the car and a neighbour reccomended one of these batters isolators but iv never really heard of them and how they fit & work. 
 
Anyone have any info & tips?
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Firestate88 
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Registered: 10th Jul 08
 Location: Northampton England 
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if its the one im thinking of, its basically a red key you turn and remove to isolate the power so it can't be stolen/battery keeps going flat 
 
 
 
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Mark.W 
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Registered: 3rd Jan 07
 Location: County Durham 
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That's a one that's designed to be installed inside the car isnt it? 
 
This is the one i came across. 
 
http://www.ebay.co.uk/itm/UNIVERSAL-CAR-Battery-Isolator-Cut-Off-Switch-/230825055786
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Gary 
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Registered: 22nd Nov 06
 Location: West Yorkshire 
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Yours would be better Mark. Far easier to fit
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John 
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Registered: 30th Jun 03
 
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Take one of the battery leads off?
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Corsa_Sport21 
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Registered: 13th Apr 08
 Location: Leven, Fife. Drives : 205 GTi 
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Had 1 of those red key 1s fitted to the MR2 i had. Previous owner fitted it because the doors didn't lock. Was fitted under the hood.
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Corsa_Sport21 
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Registered: 13th Apr 08
 Location: Leven, Fife. Drives : 205 GTi 
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Also, could some1 explain how an isolator thing will stop the battery going flat?? If its going flat just now from sitting, then its still going to go flat surely even with the isolator fitted. 
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John 
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Registered: 30th Jun 03
 
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It's assuming something in the car is draining it. If it's a duff battery it won't help.
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iby 
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Registered: 14th Sep 12
 Location: Lancashire 
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Theres a better isolator you can get that connects to your fuel pump and everything else so everything gets shut down when you take this plastic key out! 
 
  
 
Your neighbour probably meant the kill switch pictured tbh. Anyhow the eBay link will also work too and is probably best option to save you cutting wires up etc.
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iby 
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Registered: 14th Sep 12
 Location: Lancashire 
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The battery will loose its charge if not recharged. There isn't much you can do there. I have a "smart" (brand name) charger that reconditions the battery and charges it up quite nicely and fast. Reccommended for batteries like yours lol. 
Also I would get a anti-sulphate battery thingy that connects between the two terminals to keep the battery in good condition. 
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neil h 
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Registered: 28th Sep 06
 
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quote: Originally posted by iby 
  
   
 
Ummmmmmmm, what on earth is the 3ohm resistor for?
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Mark.W 
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Registered: 3rd Jan 07
 Location: County Durham 
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Battery is not all that old and i think its the Toad alarm and cold weather that's causing it to drain because the car isnt being used.
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Chris 
Premium Member
 
Registered: 21st Sep 99
 
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Best thing to do is remove the terminal, there are muliple feeds from the battery so would need to isolate to stop drainage 
 
Just leave a 10mm spanner in the door pocket, as you need to pop the bonet to flick the isolator switch, just as quick to do up the 10mm
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jrdn7 
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Registered: 14th Feb 11
 Location: Ireland 
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I've got one installed in my car, just inside the glove box. Does the job nicely, exact same one as the one above. 
 
If you get the one above mount it inside cause even tho it says waterproof the insides of the switch rust away to shit. 
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16xe_chris 
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Registered: 28th Mar 09
 Location: Keighley 
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We used to have these in our rally cars, then we realised it was easier just using the earth wire from the battery. Saves chopping lots of wires when you can re route just one to the switch lol
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AK 
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Registered: 5th Jul 00
 Location: Aberdeen City 
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just fit a quick connect terminal to the battery  
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Mark.W 
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Registered: 3rd Jan 07
 Location: County Durham 
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Hows that done? 
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iby 
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Registered: 14th Sep 12
 Location: Lancashire 
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Like this: 
 
  
 
[Edited on 09-01-2013 by iby]
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iby 
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Registered: 14th Sep 12
 Location: Lancashire 
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I think that is what he means?
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scottyp1989 
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Registered: 29th Jul 07
 Location: Warley, West Midlands 
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Something like these, all you do is lift the cap and they come off. 
http://item.mobileweb.ebay.co.uk/viewitem?itemId=360484846706&index=18&nav=SEARCH&nid=40684035614 
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Mark.W 
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Registered: 3rd Jan 07
 Location: County Durham 
User status: Offline 
 
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That's the one i came across too. 
 
http://www.ebay.co.uk/itm/UNIVERSAL-CAR-Battery-Isolator-Cut-Off-Switch-/230825055786?clk_rvr_id=436665191042&afsrc=1 
 
Do they actually work?
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John 
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Registered: 30th Jun 03
 
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Why do you not just take it off with a socket since you have to go to the trouble of opening the bonnet anyway?
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AK 
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Registered: 5th Jul 00
 Location: Aberdeen City 
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Thats what I meant, yes. 
 
John - do you normally keep a socket/spanner in your pockets or glove box? I always have me hands on my ( i hope) 
 
it is MUCH easier to remove that terminal. 
 
I would go for the red key isolater though (not cut off)... and just wire it in under the dash or somewhere descrete. More work that simple quick connect terminal though. 
 
[Edited on 11-01-2013 by AK]
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John 
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Registered: 30th Jun 03
 
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If I'm going to the trouble of disconnecting the battery and leaving the car somewhere with it disconnected, then yes, I would always have a socket on me. 
 
This isn't a race car, I'm sure you have some specific need for it, OP doesn't as far as I can see.
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AK 
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Registered: 5th Jul 00
 Location: Aberdeen City 
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...other than stopping something draining the battery. 
 
Race cars require cut-off / kill switches, not something to simply isolate the battery. 
 
[Edited on 11-01-2013 by AK]
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