N+B Batteries

Discussion in 'Tech/Mech General' started by dave2222001, Feb 15, 2014.

  1. dave2222001

    dave2222001 Read Only Funster

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    OK Ime getting to be a Pain.

    I now know where all 3 of my Batteries are, And I know that the vehicle battery is most likely goosed it failed last time I took it out of storage. wouldn't start and had to be jumped regular long runs after that no more hassle.
    So obviously Leisure batteries charge from the Hook up does the vehicle battery also charge on hook up. or does it require separate charging. ( would look in the manual but its in the Van in Portugal and ime at work in Africa) Just want to know if its worth getting it charged will be cheaper to get a new battery if I can drive to a Garage.
    Dave S
     
  2. TheBig1

    TheBig1 Funster Life Member

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    out of the factory, no the leisure battery doesnt charge whilst on ehu. on some vans you can choose to charge either leisure or van battery from the control panel. wiring in an intelligent relay like a battery master will solve this problem. it senses the leisure battery is full and diverts charging power to the van battery

    not complicated to fit, as its only 3 wires. positive on each battery and common negative/earth

    like this one
    http://www.ebay.co.uk/itm/121270094594?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649
     
  3. JeanLuc

    JeanLuc Funster

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    If, like most Hymer-group motorhomes, your N+B has a Schaudt Elektrobloc (EBL) charging system then yes, both the habitation and starter batteries are charged by default. Hab batteries take priority then the starter battery is float charged. This is designed to keep the starter battery topped up. If it is flat, or on its last legs, the EBL will struggle to restore it.

    If it does have the Schaudt system, don't think about fitting a battery master as you may confuse the existing charging regime.
     
    Last edited: Feb 15, 2014
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  4. wanderer

    wanderer Funster

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    I have the same model and mine charges both from the EHU which i have on timer for long term storage .
     
  5. ludo

    ludo Funster Life Member

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    We don't have a solar panel, just straight forward cab/hab batteries charged, whilst on EHU, by the Electroblock 99 fitted in our van as standard.

    The Hab batteries, Banner AGM x2 are AGM and the Cab battery is lead acid.

    The Electroblock is set to Gel, quite correctly!

    Does this mean that the cab battery is being undercharged when on EHU?
     
  6. JeanLuc

    JeanLuc Funster

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    No, the EBL selector (Blei-Saüre / Gel) switch only affects the multi-stage charging regime that is applied to the habitation batteries. The setting of the switch affects the duration of the second stage (bulk charge) of the cycle - 1 hour for lead-acid, 8 hours for gel. The starter battery is only ever float charged at a maximum current of 2 amps. That is why the EBL is not a good way to try and recover a flat starter battery - unless you are prepared to wait a long time.
     
    Last edited: Feb 16, 2014
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  7. MikeandCarolyn

    MikeandCarolyn Read Only Funster

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    Yet another Hymer group van here (LMC) and, yes, all batteries charge on EHU and also when using solar :BigGrin:

    Mike.
     
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