Trickle charging batteries through winter - technical query

Discussion in 'Motorhome Chat' started by martin1485, Oct 24, 2012.

  1. martin1485

    martin1485 Funster

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    Hi all.

    I have 2 x 100ah batteries wired in series and a CTEK Multi XS 7000 charger which according to the instructions is rated "For lead - acid batteries 14 - 225ah"

    I don't really want to disconnect the batteries so am proposing to put the charger onto one of them and leave it to trickle over the winter.

    Does anyone with technical knowledge of electrics see a problem with this please?
     
  2. Geo

    Geo Trader - Funster

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    No need to disconnect the battery terminals
    Suitable for all types of 12v lead-acid batteries (inc GEL & AGM)
    Charges batteries up to 150Ah & conditions larger batteries up to 225Ah
    Fully automatic - switches to conditioning mode after the initial charge
    Unique 12V 'supply mode' - saves in-car electronic settings
    Can be left connected for months - ideal for occasional-use vehicles
    Simple 'plug n play' operation - no settings to make
    Compact rugged design - water splash resistant & dust-proof
    Can be left connected for months

    Even so i'd check the electrolytic levels once or twice during this period and in particular BEFORE you start charging :thumb:
     
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  3. Chockswahay

    Chockswahay Read Only Funster

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    Err........do you mean series (24v) or meant parallel (12V)? not really helping you i guess but I am a little curious now :winky:
     
  4. jhorsf

    jhorsf Read Only Funster

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    I think you mean parallel not series as that would be 24 volts
     
  5. lunarman

    lunarman Funster Life Member

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    I trust that the batteries are wired in Parallel i.e. +ve to +ve and -ve to -ve and not in series as you say or you will have a 24v 200 ah battery bank and not a 12v 200ah one

    Lunarman
     
  6. martin1485

    martin1485 Funster

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    Sorry - not very well up on vehicle electrics. They must be in parallel. They were done by a dealer to give me extra capacity when off hook up. I'm just preparing to lay the van up for winter months and do not really want to disconnect it all if that is not necessary.

    Many thanks for your replies.
     
  7. Chockswahay

    Chockswahay Read Only Funster

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    Just looked at the posting times..........that's three of us that meant well Martin but did not really answer your question I s'pose :Blush:

    I think Geo probably gave you all the info you need

    Cheers :Smile:
     
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  8. pappajohn

    pappajohn Funster Life Member

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    obviously a typo on your part.

    series = same amps/twice the volts

    parallel = same volts/twice the amps
     
    Last edited: Oct 24, 2012
  9. Geo

    Geo Trader - Funster

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    I on the other hand, just looked up his charger and its a 12 V:Cool:
    So you all loose three points for not thinking out of the box:winky:
    Geo
     
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