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Post by Deleted on Jan 11, 2019 13:05:17 GMT
What do I need to be careful about, obviously not arcing across terminals, but is it ok to swap one over at a time to save me getting in a mess with the wiring? Do I need to isolate stuff beforehand? If so what?
Go easy with the sarcasm/piss taking/I told you so comments - I'm tired and very very stressed atm.
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Post by kris on Jan 11, 2019 13:10:46 GMT
Are they exactly the same batteries? Is the size exactly the same? Are the terminals in the same place? Whilst I think you could replace them one at once with out ossues, but personally I'd get rid of the old then put n the new. Yes isolate the batteries before disconnecting them.
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Post by Deleted on Jan 11, 2019 13:19:38 GMT
If you do all at once put some tape around each wire with a bit of the tape sticking out and cut it to different widths or lengths then take a photo of the whole lot before disturbing anything. Or cable ties cut to different lengths. Just a random idea. That gives you a chance to get it back right if you aren't 100% about how the circuit should work. I'd do them one by one if they are matching and the terminals (good point kris) are in the same places.
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Post by Deleted on Jan 11, 2019 13:22:05 GMT
Are they exactly the same batteries? Is the size exactly the same? Are the terminals in the same place? Whilst I think you could replace them one at once with out ossues, but personally I'd get rid of the old then put n the new. Yes isolate the batteries before disconnecting them. Thanks kris, sorry to ask another question. When you say isolate them, is this just flicking the isolation switch or something else I should be doing?
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Post by Trento on Jan 11, 2019 13:23:00 GMT
Take several photos with your mobile phone so you can clearly identify what wire goes where. Disconnect as mentioned, replace old batteries with new batteries, reconnect as per your photos Switch on .. Enjoy.
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Post by kris on Jan 11, 2019 13:24:11 GMT
Oh.i made a good point. You also made a couple of good points Andrew,about taking photos before you start and marking the cables in some way.
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Post by kris on Jan 11, 2019 13:25:46 GMT
Are they exactly the same batteries? Is the size exactly the same? Are the terminals in the same place? Whilst I think you could replace them one at once with out ossues, but personally I'd get rid of the old then put n the new. Yes isolate the batteries before disconnecting them. Thanks kris, sorry to ask another question. When you say isolate them, is this just flicking the isolation switch or something else I should be doing? No nothing else, if correctly installed the isolation switch should disconnect the batteries from everything.
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Post by Deleted on Jan 11, 2019 13:26:16 GMT
Same size batteries and terminals seem to be in same place.
Standby for a few more questions re getting water out of the engine hole later (hopefully) - not an emergency yet....
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Post by Deleted on Jan 11, 2019 13:27:02 GMT
It would be quite easy to get caught out by the terminals being on the wrong side. It seems obvious to check it but it could be overlooked and may result in it being impossible to fit the new batteries due to the length of the link wires.
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Post by kris on Jan 11, 2019 13:29:39 GMT
Same size batteries and terminals seem to be in same place.
Then it's relatively simple, take photos and/or mark cables before you begin. Take your time and remember to do up the connections on your new batteries quite tightly.
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Post by Deleted on Jan 11, 2019 13:38:44 GMT
I've never done it but is there some sort of recommendation about using grease on the battery terminals? Graphite grease possibly ?
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Post by kris on Jan 11, 2019 13:44:47 GMT
I've never done it but is there some sort of recommendation about using grease on the battery terminals? Graphite grease possibly ? Yes that would be a very professional thing to do. I don't think I ever have though.
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Post by quaysider on Jan 11, 2019 13:48:56 GMT
i took photos before i started the other day, made a note of how many wires came off each end + and - and laid out the connecting cable in the position they came off in...
It's a nice feeling when you get the new ones all back in and everything works - don't forget to give them a good first charge to ensure they are full to begin with... i did a couple of hours on the engine then left the genny/charger going all day and went off for a walk.
The hardest thing on Ellis, is re-setting the smartgauge as the wires are a bugger to get to whilst pressing the factory reset buttons at the same time...
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Post by Jim on Jan 11, 2019 14:17:28 GMT
If you have solar through an mppt controller I think you need to switch off the panels with a switch before the controller if you are disconnecting the batteries, or maybe cover the panels with a blanket. Ideally all the cables to the batteries should be the same length, more efficient, each battery gets the same charge and drain, so now is the time to do it.
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Post by patty on Jan 11, 2019 14:25:41 GMT
Same size batteries and terminals seem to be in same place.
Standby for a few more questions re getting water out of the engine hole later (hopefully) - not an emergency yet....
I know nuffin about batteries but water in engine hole I used to bail out what I could then do with mop n bucket ....but then I'm quite small so I could fit down beside the engine,
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