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Post by Ssscrudddy on May 2, 2017 11:22:50 GMT
How big is the batter tray? its just that full tractions come in different sizes Batteries are 345x172x235 mm. There is room for 6 batteries (1 starter 5 leisure). Originally there was a 550Ah battery bank + 1 starter. As you can see from the pics there is no room for height When I got the boat (Oct 13) it had 5 leisure batteries which were no good, they wanted almost 15 litres of water! wouldnt hold the charge & were gassing badly (starter battery was good). Maybe I knackered them but I'm not convinced. Anyway they got replaced in Dec 13/Jan 14. Not really had any trouble since then. They have never needed any water adding. I've occasionally ran them down too far, the biggest culprit being the pumpout. Basically I would do my fortnightly cruise of shame to the other side of the marina to use the pumpout, & then would forget to turn the electric back on. This was noticed by the next day at the latest until I added solar. The solar hid the fact that I hadnt turned the electric back on, which also lead to inappropriate use, eg immersion heater, microwave etc, stuff that I wouldnt knowingly use from just the batteries & inverter. In the past I have noticed after being on hook up for ages, the first night away from it the batteries would drop really quickly. Then they would last longer & seem to perform better each night away. Most recently, having replaced the pumpout with a cassette in Sept 16, I have been on hook up for much longer than previously. Twice the 1st night out of the marina the batteries have dropped to 10.8V overnight (this made me think a cell is going down). I've never seen it go that low, yet the second night away was fine. This time around the batteries were fine first night out of the marina, but then it's only been a week since I last went out. The final night they was at 12.7V in the morning (before the sun started) despite using the TV, so I'm now wondering if they are in fact ok afterall. Current batteries are Shield Power Station LM35 110L, closest I can find is this Shield Power Station LM35 110R but it doesnt say how many cycles they expect
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Post by peterboat on May 2, 2017 13:48:07 GMT
12.7 in the morning is perfik condition so I would wait and see how long before they are showing 12v in the morning cos then they are knackered!!
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Post by tonyqj on May 2, 2017 15:44:39 GMT
12.7 in the morning is perfik condition so I would wait and see how long before they are showing 12v in the morning cos then they are knackered!! Yup, I'd go along with that.
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Post by Ssscrudddy on May 3, 2017 7:19:52 GMT
Well I still want to add more capacity. According to Shield, the difference between 110L (mine) & the new 110R is terminals. Also according to them they dont make this any more, & the closest replacement of the same is now a 115Ah.
How 'bad' would it be to add 2x 115Ah batteries to the existing 3x 110Ah bank?
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Post by kris on May 3, 2017 7:38:47 GMT
It's not recommended to mix old and new batteries. You won't be getting the full advantage of the new batteries.
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Post by tonyqj on May 5, 2017 14:46:07 GMT
It's not recommended to mix old and new batteries. You won't be getting the full advantage of the new batteries. That's not correct. Adding one or more batteries to a bank won't make the new batteries under-perform at all. The only thing to consider is that the older batteries may well fail before the new ones, so keep an eye on performance going forward. If you note any sudden changes then check out the old batteries first. Obviously if the existing batteries are totally knackered then you don't want to be adding anything to them, you should be replacing them.
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Post by tonyqj on May 5, 2017 14:46:49 GMT
Well I still want to add more capacity. According to Shield, the difference between 110L (mine) & the new 110R is terminals. Also according to them they dont make this any more, & the closest replacement of the same is now a 115Ah. How 'bad' would it be to add 2x 115Ah batteries to the existing 3x 110Ah bank? It wouldn't be bad at all. It would be a good idea if you have the space.
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Post by kris on May 5, 2017 17:24:54 GMT
I wouldn't be mixing old and new batteries myself.
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Post by Mr Stabby on May 5, 2017 19:45:03 GMT
I wouldn't be mixing old and new batteries myself. Neither would I, it's just asking for trouble. I can't think of one single application, from a 99p torch to a £120,000 articulated lorry, where I would change the batteries other than in a full set. I also wouldn't mix 115 Ah and 110 Ah batteries in the same bank.
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Post by kris on May 5, 2017 20:11:01 GMT
I wouldn't be mixing old and new batteries myself. Neither would I, it's just asking for trouble. I can't think of one single application, from a 99p torch to a £120,000 articulated lorry, where I would change the batteries other than in a full set. I also wouldn't mix 115 Ah and 110 Ah batteries in the same bank. its all about internal resistance.
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Post by Deleted on May 5, 2017 20:13:55 GMT
Neither would I, it's just asking for trouble. I can't think of one single application, from a 99p torch to a £120,000 articulated lorry, where I would change the batteries other than in a full set. I also wouldn't mix 115 Ah and 110 Ah batteries in the same bank. its all about internal resistance. Which, in the grand scheme of things is utterly futile.
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Post by Deleted on May 5, 2017 20:20:26 GMT
I hate futility.
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Post by kris on May 5, 2017 20:21:03 GMT
Futility is hateful
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Post by Deleted on May 5, 2017 20:22:14 GMT
I also hate putting new batteries in with old ones.
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Post by JohnV on May 5, 2017 20:31:11 GMT
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