Malcolm48 Posted May 31, 2019 Report Share Posted May 31, 2019 Advice required re my batt set up please. My boat has three 110ah leisure batts and 1 starter batt, all four batts appear to be connected in parallel. Is this correct, or should they be in separate banks? The Isuzu33 engine is fitted with two 70A alternators. Thankyou Link to comment Share on other sites More sharing options...
cuthound Posted May 31, 2019 Report Share Posted May 31, 2019 (edited) 1 hour ago, Malcolm48 said: Advice required re my batt set up please. My boat has three 110ah leisure batts and 1 starter batt, all four batts appear to be connected in parallel. Is this correct, or should they be in separate banks? The Isuzu33 engine is fitted with two 70A alternators. Thankyou It is certainly unusual to have two alternator feeding a common batter bank. Usually one alternator charges the domestic battery and one charges the starter battery. Presumably the alternators are paralleled? By having a common battery bank, you risk not being able to start the engine to recharge the batteries, should you flatten the batteries, perhaps by leaving lights on overnight. Edited May 31, 2019 by cuthound Spillung Link to comment Share on other sites More sharing options...
MtB Posted May 31, 2019 Report Share Posted May 31, 2019 Three is an unusual number of domestic batteries too. Four in parallel is more common. This leads me to wonder if there is a fifth (starter) battery tucked away where you haven’t noticed it. Link to comment Share on other sites More sharing options...
Tony Brooks Posted May 31, 2019 Report Share Posted May 31, 2019 or you have not noticed it is only the negatives that are totally paralleled with the positives having a missing interlink between battery and the start battery. Canb be very hard to see in some installations. 1 Link to comment Share on other sites More sharing options...
Malcolm48 Posted May 31, 2019 Author Report Share Posted May 31, 2019 Good point Mike, unfortunately it will be another week before I can check on that one. Although I can tell you the fourth batt is smaller than the other three. Link to comment Share on other sites More sharing options...
MtB Posted May 31, 2019 Report Share Posted May 31, 2019 (edited) 20 minutes ago, Malcolm48 said: Good point Mike, unfortunately it will be another week before I can check on that one. Although I can tell you the fourth batt is smaller than the other three. Ah, now that suggests closer inspection will reveal the scenario Tony describes, where only the negatives are all four joined up. I think three positives will be joined up and the forth, smaller battery positive will go off to somewhere else. Edited May 31, 2019 by Mike the Boilerman Speeling. Link to comment Share on other sites More sharing options...
Tony Brooks Posted May 31, 2019 Report Share Posted May 31, 2019 1 hour ago, Mike the Boilerman said: Ah, now that suggests closer inspection will reveal the scenario Tony describes, where only the negatives are all four joined up. I think three positives will be joined up and the forth, smaller battery positive will go off to somewhere else. agreed Link to comment Share on other sites More sharing options...
WotEver Posted June 11, 2019 Report Share Posted June 11, 2019 But we’ll probably never know... Link to comment Share on other sites More sharing options...
Dr Bob Posted June 12, 2019 Report Share Posted June 12, 2019 8 hours ago, WotEver said: But we’ll probably never know... Maybe the op has lost his password....... .......... or he did miss that wire. Link to comment Share on other sites More sharing options...
Murflynn Posted June 12, 2019 Report Share Posted June 12, 2019 what an uncharitable bunch you are! he's probably hiding under an umbrella somewhere waiting for a break in the weather so he can visit the boat. Link to comment Share on other sites More sharing options...
Tony Brooks Posted June 12, 2019 Report Share Posted June 12, 2019 If what I suggested turned out to be true I suspect he will be feeling a bit if a lemon, not realising we all do similar things at times and its how we learn. For many people that is enough for them to keep their head down. Pity really because it is always informative to learn the outcome of questions. Link to comment Share on other sites More sharing options...
MtB Posted June 12, 2019 Report Share Posted June 12, 2019 The OP tells us in Post 5 it is gonna be a week before he can check. Twelve days ago ? Link to comment Share on other sites More sharing options...
WotEver Posted June 12, 2019 Report Share Posted June 12, 2019 2 hours ago, Mike the Boilerman said: The OP tells us in Post 5 it is gonna be a week before he can check. Twelve days ago ? And he’s not returned since. Link to comment Share on other sites More sharing options...
Dr Bob Posted June 12, 2019 Report Share Posted June 12, 2019 4 hours ago, Mike the Boilerman said: The OP tells us in Post 5 it is gonna be a week before he can check. Twelve days ago ? What's that in metric? Link to comment Share on other sites More sharing options...
MtB Posted June 12, 2019 Report Share Posted June 12, 2019 1 minute ago, Dr Bob said: What's that in metric? Never heard of a place called Metric.... Link to comment Share on other sites More sharing options...
Dr Bob Posted June 12, 2019 Report Share Posted June 12, 2019 5 minutes ago, Mike the Boilerman said: Never heard of a place called Metric.... It comes before the Metro. Link to comment Share on other sites More sharing options...
MtB Posted June 12, 2019 Report Share Posted June 12, 2019 7 minutes ago, Dr Bob said: It comes before the Metro. I just checked my dictionary, and you're right! 1 Link to comment Share on other sites More sharing options...
Murflynn Posted June 12, 2019 Report Share Posted June 12, 2019 he'll never come back now, what wiv all this p*ss taking. Link to comment Share on other sites More sharing options...
Ssscrudddy Posted June 13, 2019 Report Share Posted June 13, 2019 On 12/06/2019 at 14:00, Mike the Boilerman said: Never heard of a place called Metric.... Metric Place Te Atatu South, Auckland 0610, New Zealand https://maps.app.goo.gl/GtrWYBQeMpv61sKq9 1 Link to comment Share on other sites More sharing options...
Murflynn Posted June 13, 2019 Report Share Posted June 13, 2019 you didn't know that - you had to google it. Link to comment Share on other sites More sharing options...
Ssscrudddy Posted June 15, 2019 Report Share Posted June 15, 2019 True, but the missus did know about it though. Link to comment Share on other sites More sharing options...
Malcolm48 Posted June 25, 2019 Author Report Share Posted June 25, 2019 Thankyou for all your replies, eventually got up to boat, why can’t the T&M be nearer? anyway, checked battery banks and sure enough, the neg was connected through all four batts and the leisure/starter batts had separate pos feeds. Put my neck out in the process, is it a design feature that batt banks are located where you can’t get at them? Link to comment Share on other sites More sharing options...
OldGoat Posted June 25, 2019 Report Share Posted June 25, 2019 57 minutes ago, Malcolm48 said: Thankyou for all your replies, eventually got up to boat, why can’t the T&M be nearer? anyway, checked battery banks and sure enough, the neg was connected through all four batts and the leisure/starter batts had separate pos feeds. Put my neck out in the process, is it a design feature that batt banks are located where you can’t get at them? Yes it's a pre-requisite of narrow boating. They're not intended to be comfortable and you're supposed to always wear a hair shirt. If you don't have a pumpout, then ensure that the loo casette can't easily be withdrawn without dismantling the whole device Other rules are:- Make the pumpout tank out of steel, have no inspection hatch and fit it under the bed so that you can't inspect it anyway. Insist on a very small fridge, run it on 12v and later buy a similar freezer. Add - batteries to be 12v and stored where there is no reasonable access - as you have discovered If you have a multifuel stove put it as near to the forward door as you can and ensue that the stack catches your arm when you enter and exit That lot is just for starters. 1 Link to comment Share on other sites More sharing options...
mrsmelly Posted June 25, 2019 Report Share Posted June 25, 2019 2 minutes ago, OldGoat said: Yes it's a pre-requisite of narrow boating. They're not intended to be comfortable and you're supposed to always wear a hair shirt. If you don't have a pumpout, then ensure that the loo casette can't easily be withdrawn without dismantling the whole device Other rules are:- Make the pumpout tank out of steel, have no inspection hatch and fit it under the bed so that you can't inspect it anyway. Insist on a very small fridge, run it on 12v and later buy a similar freezer. Add - batteries to be 12v and stored where there is no reasonable access - as you have discovered If you have a multifuel stove put it as near to the forward door as you can and ensue that the stack catches your arm when you enter and exit That lot is just for starters. Further to this Have a poxy cratch board to bang yer edd on when getting out of boat Have a pram hood to put loads of stuff under cover that needs taking down every time you go boating. Ensure the gas locker is a pillock to get at and if at the pointy end made even worse by a cratch and cover Fit a cross bed so only pygmies can sleep well at night Link to comment Share on other sites More sharing options...
MtB Posted June 25, 2019 Report Share Posted June 25, 2019 And further still... Fit a nasty buzzy engine under the floor tightly squeezed in so no-one can get at the starter motor or anything else important without arms like knitting needles and three elbows in each. Link to comment Share on other sites More sharing options...
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