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Paralleling Batteries....

  • 11-06-2009 11:11pm
    #1
    Seanieke
    Registered Users, Registered Users 2 Posts: 853 ✭✭✭


    I've been sent over here from motors, told ye were the men, and women, for the job, hopefully someone can help..


    I want to run a few lights, power inverter & a few other bits & bobs in the back of my van & know I'll need a bigger battery, I have a 130Ah battery in at the moment. I was thinking putting another battery in the back & paralleling it would be cheaper & easier than trying to find some "super battery" as I've a few batteries knocking about.

    As you can see, the "super batteries" aint pocket friendly http://www.apexbattery.com/universal...l-battery.html

    Has anyone done this sucessfully? The van is a 1.9 diesel Primastar, would the altenator handle the charging??


Comments

  • #2
    merc camper
    Registered Users, Registered Users 2 Posts: 48 ✭merc camper


    The simples way to do this is use a voltage sensing relay here is an example http://cgi.ebay.co.uk/100A-INTELLIGENT-VOLTAGE-SENSING-VSR-Split-Charge-Relay_W0QQitemZ280351641427QQcmdZViewItemQQimsxZ20090529?IMSfp=TL090529147003r38889#ebayphotohosting
    Either keep the second battery close or use large cables to run from the starter battery and put a fuse in. The auxillary battery will charge when the starter battery is fully charged and disconnect itself when the van is off.
    This is simplest method and is cheap u can use a sterling battery to battery charger if u want some fancy charging


  • #3
    Seanieke
    Registered Users, Registered Users 2 Posts: 853 ✭✭✭Seanieke


    Excellent, thanks for the advice! I'll let you know how it goes!

    Dont suppose you know where to get cheap 12v Inverters..?!


  • #4
    merc camper
    Registered Users, Registered Users 2 Posts: 48 ✭merc camper


    Cant remember of the3 site i got mine from there was a big difference in price so shop arround. Sterling power is the make i got. U need to know what u want to power from the inverter as there are 2 types pure and square wave. Big difference in price so u need to think about what u are going to power from them. Some appliance dont work on square wave. Big money for a pure sine wave inverter


  • #5
    Seanieke
    Registered Users, Registered Users 2 Posts: 853 ✭✭✭Seanieke


    It'll just be chargers for drills mainly. Maybe something funny if I'm away fishing but I wouldn't be to concerned if they didn't work.


  • #6
    Seanieke
    Registered Users, Registered Users 2 Posts: 853 ✭✭✭Seanieke


    Found this after yor words of advice on sinewave & squarewave

    http://w5jgv.com/inverter/index.htm

    maybe someone will find it an interesting read too

    Worth pointing 60Hz is Americas & we opperate at 50Hz


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  • #7
    bushy...
    Closed Accounts Posts: 1,467 ✭✭✭bushy...


    If its just for drills you can get this sort of thing

    http://www.ciao.co.uk/DeWalt_De9112_Car_Charger_For_7_2V_18V__7095599


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