FAZ
Premium Member
Registered: 24th Nov 07
Location: Coventry
User status: Offline
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how do you wire 2 batteries up? so they both charge etc, i need 1 4 driving and a nother 1 for amps etc
cheers, neil
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FAZ
Premium Member
Registered: 24th Nov 07
Location: Coventry
User status: Offline
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bump
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rikkgti
Member
Registered: 5th Jun 08
Location: South yorkshire
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simple brigde the live to the other + on battry and earth the - the chassis cut some battrey terminals off a car from scrappy as well.
[Edited on 04-08-2008 by rikkgti]
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FAZ
Premium Member
Registered: 24th Nov 07
Location: Coventry
User status: Offline
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cool, will this work, ive been reading around and keep seeing this split charging thing
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FAZ
Premium Member
Registered: 24th Nov 07
Location: Coventry
User status: Offline
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thats what i thought about just wiring the battery like that rikkgti, but what is this split charging stuff?
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rikkgti
Member
Registered: 5th Jun 08
Location: South yorkshire
User status: Offline
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no idea but they both will charge
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luke85
Member
Registered: 26th Nov 07
Location: Chesterfield
User status: Offline
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If you connect them like that they will both charge but will both drain when you turn the engine off and leave the stereo on.
A split charge system will send power to the battery used on your amps while the engine is running to charge it, but when you turn the engine off you will only flatten the battery used for your amps so you can still start the car if you get carried away 
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FAZ
Premium Member
Registered: 24th Nov 07
Location: Coventry
User status: Offline
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genius, how do i do this split charge thing?
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FAZ
Premium Member
Registered: 24th Nov 07
Location: Coventry
User status: Offline
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bump
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luke85
Member
Registered: 26th Nov 07
Location: Chesterfield
User status: Offline
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You need to buy what is basically a relay which cuts the link between the amp battery and the starter battery when the ignition is switched off. Depending on the spec of your alternator/batteries/install you need to see which size you need:
Example 1
Example 2
I used to be into audio in a big way a few years ago and its worth joining on talkaudio, plenty of good advice avaliable on there.
Still have a 1600W RMS sub in the spare room if I can tempt you? 
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adam.d
Member
Registered: 7th Nov 07
Location: hartlepool Drives: corsa LET
User status: Offline
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you have to buy a split charge system mate, unless someone knows how to make one?????
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John
Member
Registered: 30th Jun 03
User status: Offline
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It looks like a relay connected to a switched live.
If you could find a suitable relay cheaper it would do the same job.
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FAZ
Premium Member
Registered: 24th Nov 07
Location: Coventry
User status: Offline
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cheers guys, im ok luke85, haha cant get anymore audio (or anything else) in my boot
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FAZ
Premium Member
Registered: 24th Nov 07
Location: Coventry
User status: Offline
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by the way whats the difference between the 2 examples from luke85?
its a standard 55a altenator offa 1.2 16v if you need to know
also isit any recomendations on a second battery? ive got a VARTA B18 at the moment? shall i try and get the same one again? ill run the car and amps off 1 batt and all lights and subs off the second
[Edited on 06-08-2008 by thrill1258]
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