Dual Battery System

Thanks for the info Dave.

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Originally Posted by Damo89

Guys - you are absolute legends. As soon as I get home from work tomorrow I'll start off with checking those circuit breakers as Dave has mentioned.

As you say - if they are over used they may fail. If it has failed, should I be looking at a larger circuit breaker in there?

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only if the load you are putting on it is more than its ment to handle.
IF its failed because of heat or a short overworking it then no.

ID go so far as to say that the 30 breaker for your current fuse panel load out (1 fridge, 1 cig socket and 2 usb) is oversize and Id have stuck a 15 amp breaker in behind a 20A fuse.


Im also tempted to suggest that I bet your early cut out problem is being caused by your fuse block, most likely one of the phillips head screws and spring washers holding down the delivery wires

I've just poked around more and found the ABG-25 - is this a big game changer?

hi Damo, sounds like the ABG25 is doing its job, but that doesnt mean there isnt a problem with the circuit breaker. i've just installed the same set up, so far so good. you're welcome to take a look and compare notes. just PM me.

another thought, next step is crack open the ABG25 and see what voltage it is set to cut off at

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Originally Posted by The Beast

another thought, next step is crack open the ABG25 and see what voltage it is set to cut off at

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I didn't know you could! I'll try at lunch :-)

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Originally Posted by The Beast

hi Damo, sounds like the ABG25 is doing its job, but that doesnt mean there isnt a problem with the circuit breaker. i've just installed the same set up, so far so good. you're welcome to take a look and compare notes. just PM me.

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I replaced my isolator only to find it was the circuit breaker at fault, figured it was 25yo so was probably due for replacement but it still works perfectly.

Sent from my GT-I9300 using AULRO mobile app

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Originally Posted by Damo89

I've just poked around more and found the ABG-25 - is this a big game changer?

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sure is, thats your low voltage cut out unit.

if its set high it'll cut out very early on. if its set at a reasonable voltage and you have a voltage drop between the battery and the input of the unit it will cut out early as well.

Problem solved - dead battery. :wasntme:

Thanks for the help everyone - I learnt a hell of a lot!