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By Barroca Grande 2
Hi all battery afficionados I am about to take new batteries down to the boat and do the change over. I have searched the forum and found some interesting things I did not know before. Now I would like some clarification. The old set up (six batteries 110Ah) was always a bit higgeldy piggeldy as we couldn't fit all the ends onto the terminals. When I had to buy new batteries at short notice we basically had to do the same again so
Set 2 comprises 5 leisure batteries 115Ah I will label them A to E.
Battery A currently has solar cable and one from the Isolator Switch and link to battery B
Battery B has two links A and C
Battery C has link to B and D as well as smartgauge
Battery D has link to C and E as well as one to the Isolator Switch
Battery E has link to D
Battery E has link to D and one to Victron and one to the Mikuni
Battery D has links to E and C and one to the smartgauge
Battery C has links to B and D and one to the solar panels
Battery B has links to A and C and one to Victron
Battery A has link to B and one off to the Starter Battery
Now the 4 new batteries 160Ah have a M8 bolt type fitting so no need for the terminal clamps as used previously so we hope that it will be easier to fit more cables to a single post.
The proposed layout is going to be
Battery A has both the Isolator cables and the link to B
Battery B has link A and C
Battery C has link to B and D
Battery D has Link from C and solar and Mikuni and smartgauge (ie 4 one large and three small)
Battery D has link to C and both large cables to Victron
Battery C has links to D and B
Battery B has links to A and C
Battery A has link from B then the large one to Starter battery and the negatives to Solar Mikuni and smartgauge.
I am reasonably happy with this BUT which order should I pile the cable ends for best connection (thinking smartguage here)
(My reasoning for putting both Isolator switch connections to one and both Victron to the other is I am not 100% sure why there are two or if this is immaterial or not and if material and I put them the wrong way around it could mean that they are not going to pass through the whole bank. If you get my drift.)
I have printed off the smartgauge info linked to in a previous post about how to correctly interconnect multiple batteries but
a) this doesn't address the issue of all the other items connected to the bank. I have basically assumed that by having the charger going one way and the solar and everything else going the other way around that that is okay. Otherwise Everything would have to go onto two diagonally opposite terminals
and b ) we don't have enough extra cabling to do the fancy Methods 3 or 4.
Schematic, what I drew, of current set up since oct 14.pdf
Now I have caught your attention I have put this in the virtual pub so it excludes members who are too boring to visit it. I have had my batteries changed today my old ones are sat on the arse end of the boat here at Lower Heyford waiting for later removal. I cant be arsed ever nor can my mate who changed em be arsed to weigh them in so If you can be arsed and are passing by boat pull alongside and away you go. Just let me know who you are if you can be bothered, first come first served so to speak. Oh yes editted to add there are 4 at 24 kilos each in foreign measurements.
for the last few days our engine has been kicking out white fumes from the exhaust and seeming much noisier from it too. So thinking it could be water in the fuel I drained both fuel filters and continued on our way. The smoke returned 15mins into cruising and even spat out a little black when going astern into the locks. So We gave her a rest. By the morning our starter battery didn't have enough charge to turn over the engine and we had to charge it from our genny. Even tho we have the starter isolated all the time when not running? The battery isolator is new from amazon? But we remove the key so surely that cannot drain it?
today we charged the starter off the genny and eventually got her started. She blew white smoke for the hour and a half cruise to bedwyn and we stopped. We decided we could try checking the valve clearances, not easy as we couldn't find the tdc for each valve. But then after only 2 hours moored the engine again wouldn't tick over! And each time the key turned in the ignition you could watch the battery voltage dropping on the starter and even on the leisure battery readers.
we are baffled! I am guessing they are two separate issues, the smoke and the batteries draining. But it feels so coincidental to all happen at once.
any advice or ideas would be great. Or anyone near bedwyn on the k&a willing to help would be great too!
By Johny London
Just thinking about how best to bring my solar cabling into the boat - I've seen it going into mushroom vents but I'm doubtful I'll be able to run it inside the roof space without taking half the ceiling down - it's a few metres. So I looked for waterproof junction boxes and found some for solar panels - with diodes already inside. That set me a thinking regarding blocking diodes and whether I need them!
So, before I order the cheapest little plastic box with a grommeted hole, perhaps I could ask what others have used and whether diodes are necessary!
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