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Post by naughtyfox on Sept 2, 2018 14:15:28 GMT
Summer's over and it's time to have a clear out of old messages and photos and stuff. Here's a photo I took a while back underneath our 'intelligent/smart' battery charger. Can anyone tell me what the cables are? When we can get 240v from the shore we can turn this thing on (on/off switch), and its only function as far as I can tell is to charge our batteries (2 leisures + 1 starter). Three lights come on gradually, to tell you... well, I dunno - one light comes on, then two, then all three, which I think must mean the batteries are full we're done here thank you. But what are the cables? I imagine there's a positive and negative that go into the charger unit itself, but what would the thick black cable be, and what are the two thin black cables? I've read the manual but I can't make much sense of it. Just curious to find out what the cables are before I delete the photo from my computer, it's been here for far too long. I've never had the chance to examine where the cables go, or how they are connected to the batteries.  |
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Post by kris on Sept 2, 2018 15:58:16 GMT
Can you not follow the black cables back, it's difficult to tell from the photo and I don't know that particular charger. But it looks like maybe a remote on off switch and maybe a communication connection.
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Post by naughtyfox on Sept 2, 2018 16:11:45 GMT
One day I will spend the whole day in the engine room trying to work out what's what, there was the chance someone on TB might know exactly what these cables are. Whether it works or not I don't know, but it seems to, and I have faith that the three orange lights mean "batteries are fully charged". Whenever we find 240v I do like to turn the charger on in the hope it's doing something useful.
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Post by Deleted on Sept 2, 2018 16:36:27 GMT
I think Telemachus is a mastervolt man. They are possibly the battery temperature sensor wires. |
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Post by Telemachus on Sept 2, 2018 19:26:39 GMT
Well firstly what is your boat doing in Australia? And then yes at first glance you would expect a fat positive and negative to the domestic batteries. A smaller wire to the starter battery (lower max current), a temperature sensor for the domestic battery (since charge voltage is a function of battery temperature. That leaves another wire. Maybe the starter battery temperature? Dunno, but being a radical I suppose I could have a look at the instructions!!  |
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Post by Deleted on Sept 2, 2018 19:30:34 GMT
Late to this.
The red wire is a positive. I'm sure of it.
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Post by Deleted on Sept 2, 2018 19:37:01 GMT
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Post by Telemachus on Sept 2, 2018 19:42:23 GMT
Looks like the two RJ12 connectors are for temp sensor and remote panel. Do you have a remote panel?
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Post by kris on Sept 2, 2018 19:45:42 GMT
Looks like the two RJ12 connectors are for temp sensor and remote panel. Do you have a remote panel? Ah so I was correct. |
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Post by Deleted on Sept 2, 2018 20:47:56 GMT
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Post by Deleted on Sept 2, 2018 20:49:24 GMT
Looks like the two RJ12 connectors are for temp sensor and remote panel. Do you have a remote panel? Ah so I was correct. Bloody hell I never realised you were gazza |
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Post by Telemachus on Sept 2, 2018 21:01:29 GMT
Looks like the two RJ12 connectors are for temp sensor and remote panel. Do you have a remote panel? Ah so I was correct. No, you said “remote on off switch and maybe a communication connection”. In what way do either of those resemble a temperature sensor? |
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Post by kris on Sept 2, 2018 21:02:44 GMT
So what's the remote panel for then
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Post by Telemachus on Sept 2, 2018 21:06:11 GMT
So what's the remote panel for then People who are too lazy to walk to the charger to look at the lights? But definitely not to measure the temperature of the batteries in order to charge at the appropriate voltage. |
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Post by kris on Sept 2, 2018 21:11:22 GMT
Maybe turn it on and off, like a remote switch maybe.
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