Batteries

Discussion in 'Motorhome Chat' started by Brakers, Apr 18, 2016.

  1. Brakers

    Brakers Funster Life Member

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    Hi Pip Squeaks
    This is one where I totally can’t understand why there is such a difference in pricing when all the spec seems to be the same. If you’ve seen some of my posts before you might know I want to do the majority of my motorhome exploits as wild camping. I’ve recently purchased the vehicle , which has a brand new battery on it 110Ahr the link below is the battery which the company I bought it off put on for me.
    https://www.tayna.co.uk/Numax-CXV31MF-P3694.html

    Also a link to the Numax PDF file if your interested.
    https://www.tayna.co.uk/docs/catalogues/numax/numax-leisure.pdf
    Now although it seems to get good reviews I want my battery bank to be as robust as possible, without turning it into an electric vehicle if you know what I mean.
    I was considering Banner batteries but was shot down in another post when one Lenny HB said and I quote
    “both my crap Banner AGM batteries died within a couple of days of each other” and also he said “if you search the German forums you will see how bad they are.”
    Which you can understand put me off of them slightly.
    Would it be beneficial if I could put two 115Ahr batteries in instead of two 110Ahr. I know it’s only 5Ahr extra per battery but the old saying every little helps comes to mind.

    https://www.tayna.co.uk/EXV115-Enduroline-Calcium-Leisure-Battery-P8283.html

    So I know some of you scientific guys out there know all about batteries and the tech stuf so I would like some input as to what you think I should go for remembering I want them to be as robust as possible within my limits.

    Also I would still like to hear from you if you have had good or bad experiences with batteries also what battery banks you have and if you are a wild camper or mainly a site camper.

    My battery dimensions are 330mm Length 172mm Width and 242mm Ht Inc terminals this is the biggest battery I can fit but have space for another one of the same dimensions alongside.
    Many Thanks Tony
     
  2. Techno

    Techno Funster Life Member

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  3. John Laidler

    John Laidler Funster

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    I'm not sure what you are asking? The more battery capacity the better. It's as simple as that I think, although I doubt in the real world you would notice any really difference between 110 and 115 Ah but if the latter fit, then get them.
     
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  4. Lenny HB

    Lenny HB Funster

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    If you want a quality wet cell can't go far wrong with Varta.
     
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  5. Brakers

    Brakers Funster Life Member

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    Not Banner then LOL
     
  6. My Dog Likes Fishing

    My Dog Likes Fishing Funster Life Member

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    Techno you do look organised.......
     
  7. Techno

    Techno Funster Life Member

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    :LOL:
    [​IMG]
    [​IMG]
    [​IMG]
     
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  8. Arzedby

    Arzedby Funster

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    Techno...
    A quick question re your batteries. Shouldn't the +ve connection to the 2nd battery be via an in-line fuze? I only ask because the second on my new van is connected via an in-line fuze, but the connectors were quite loose. It was coming apart with the vibration when on the road. I have put a good squeeze on them now but I am not sure I really trust them.
     
  9. Brakers

    Brakers Funster Life Member

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    Techno Is this an electric vehicle your running? :)
     
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  10. Techno

    Techno Funster Life Member

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    It's four batteries in parallel connected with 35mm welding cable. The only fuses are on the load connections.
    Here
    [​IMG]
     
  11. pappajohn

    pappajohn Funster Life Member

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    With the batteries being so close there is very little chance of any any short circuit damage occuring so fuses are a necessity in this case.

    If there is any possibilty of damage to link cables then a fuse at EACH end of the link is required.
    The reason for two fuses.....

    If the cable gets a short circuit to earth the fuse will blow, but the second battery is still connected and unprotected.
     
  12. Brakers

    Brakers Funster Life Member

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    Hi Techno Why does you wireing look like it could take the power of the national grid going through it and mine looks like crap. Did you make the cables yourself or were they like that when you bought your motorhome?
    I don't think I could make mine as neat and good looking as yours as I have not access above my battery box. Pics below :-(


    20160418_120652.jpg

    20160418_182354.jpg
    20160418_182337.jpg

    Many Thanks Tony
     
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  13. Techno

    Techno Funster Life Member

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    Yes

    Yours looks like Autotrail shite :LOL: (Sargent)
     
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  14. Brakers

    Brakers Funster Life Member

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    Your 100% correct I'm feeling misserable now :-(
    I was hopeing you were going to say that looks fine, but I had my doubts.
    Thanks anyway Best Wishes
     
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  15. Techno

    Techno Funster Life Member

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    You basically have two sets of battery leads from the Sargent panel but only one set is being used.
    Some people choose to join them together effectively doubling the cable size and reducing the volts drop.
    They then connect the batteries together making them effectively one big battery.

    That would be my recommendation
     
  16. Brakers

    Brakers Funster Life Member

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    So basically the two wires are connected to the same + and - connections of the Sargent pannel is that correct if so connecting them together sounds like a good Idea to me, I might see if I can go down that route.
    Many Thanks Tony
     
  17. Lenny HB

    Lenny HB Funster

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    Go on go for Banner it will give you something to do replacing them every 12 - 18 months, also helps to get rid of the kids inheritance as they don't honor warranties.:)

    Blimey wouldn't want to connect anything more than one reading lamp to those cables, must take weeks to recharge the batteries with the volt drop you will get with that size cable.:D
     
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  18. Brakers

    Brakers Funster Life Member

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    Your right Lenny I'm a bit worried about them, I was thinking how difficult would it might be to replace them with more substantial wireing. :-(
     
  19. Brakers

    Brakers Funster Life Member

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    Techno It looks like your the Guru for batteries on this thread, if I buy the two batteries on your link will I be able to utilize the 110Ahr battery I already have? so three batteries in parallel.
    Many Thanks Tony
     
  20. DanielFord

    DanielFord Funster

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    Hi again, there are only two ways of doing what you want, to quote Jack Dee "Either you do it, or some other buggar does it!"
    If you aren't familiar with parallel circuits, I would favour the latter :)
    The simple rule is, the bigger the distance that the electricity has to travel, the bigger the wire you need. Or to put it another way, ohms law! :D
     
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