leisure battery

Discussion in 'Water Fed Pole Cleaning' started by jtc, Feb 9, 2016.

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  1. jtc

    jtc Newcomer
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    evening gents,does anyone on here have a idea how long a leisure battery would last after being charged?i use maybe ten backpacks a day.iv always linked the main battery to the leisure one which gives me power to the pump switch but lately the van has been struggling(old ford escort) .thinking of just charging the leisure battery so i dont drain the main battery so much.thanks
     
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  2. Iron Giant

    Iron Giant Active Member
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    So do you actually have a separate leisure battery or is it just the backpack battery , If you're running a split relay and you aint doing many miles the battery wont be getting a full charge so this could be the issue also the colder water is more draw on the battery thus depleting quicker .

    Van battery could be on its way or not hard to say exactly as not 100% clear of your set up :confused:
     
  3. jtc

    jtc Newcomer
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    thanks iron giant,it was run from van battery to leisure battery which went to the switch on my water container .i turn on the pump and put water in to a backpack then go cleaning..i had a switch put on at the weekend which i have to activate before the pump switch will work.i think this would be the split switch.when im not filling up i can turn the spilt switch off and then the leisure battery dosnt drain the main battery.also i had the battery 'reset' at the place i brought it from overnight .collected it this morning .all been fine today.hope my drained battery is a thing of the past now.if it isnt then i will have to unlink the two batteries and charge the leisure one seperately.thats why i was asking how long would i get out of a leisure battery before having to recharge?i dont drive too far so i suppose this dosnt help .thanks for your reply.i appreciate it
     
  4. adamangler

    adamangler Wakefield Window Warrior
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    Leisure battery are rated in amp hours, Whats the amp draw on your pump?

    divide battery rating by amps drawn and you have your answer.

    As for charging, get a 12v solar panel mounted on your roof should prolong it a while
     
  5. spruce

    spruce Grand Master
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    #5 spruce, Feb 10, 2016
    Last edited: Feb 10, 2016
    If you have an 85 amp leisure battery and you have a pump that draws 4 amp h then the battery in theory will run the pump for 21 hours. (The pump's specifications should tell you it's current draw.)
    You need to chart the length of time the pump runs for to fill your backpack and how many times a day you fill it. You will then be able to work out how much you have taken from your battery.

    Example; if you run to pump for 30 sec each time you fill you backpack and you do it 15 times a day, then you will run the motor for 7.5 minutes a day. If your pump draws 4 amps then your pump will draw an 8th of the motors current rating, ie 0.5 amps. So if you never recharge your battery until it has reached 50% charged then you battery will last for 3 months. Over time a battery will loose charge through natural processes so that 3 month figure is already incorrect. The battery will be well on its way to becoming calcified in that time of discharge.

    You don't want to flatten a leisure battery. You need to keep it at above 50% and recharge it as soon as you can. It needs to be kept fully charged.

    I would have thought that linking a leisure battery to your van's charging system via a split charge relay would be sufficient to replenish the small current draw, even if it were a couple of amps. But you still need to 'bench' charge it at least once a week to fully charge it. Your van's alternator won't do that. (You need a charger that is designed as a leisure battery charger.)

    It was once stated in an Australian RV magazine that it would need a drive of 750km for an alternator to fully recharge a leisure battery. The main reason is that as a leisure battery becomes more fully charged, the slower it accepts a charge.

    See my comments on this thread regarding this.
    Split Charge Relay...
     
  6. spruce

    spruce Grand Master
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    Total waste of time in the UK in winter. We don't get enough sun. Mark Munro gave up on that exercise.
     
  7. jtc

    jtc Newcomer
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    thanks lads
     
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