Nearly Killed My Car Battery Today!

Discussion in 'Water Fed Pole Cleaning' started by keir, Jan 29, 2013.

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  1. keir

    keir Guru
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    been running my system off my car battery for a while but when i needed a new alternater last year began worrying a bit so picked up a leisure battery off a custy but it seemed to be a dud so went back to running it off the car, well today it pretty much died!!!! so its on charge now but i had to get another brand new 110 leisure battery but seems i've not been charging it correctly.

    apparently you have to flatten them completely then charge them for 3 days at no less than 11 amps, which will explain why my other one appeared to be a dud, i've been using an optimate that i use for my motorbike which only charges at 0.2-0.8 amps the old'un turned out to still be ok after load testing. just had to get a beefier charger

    there's no point me putting a split charger on cause i only drag the trailor to work and back which is a round trip of 11 miles
     
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  2. rcproperty

    rcproperty Hero
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    leisure battery dont need to be flatten then re charged for 3 days atall, mine been in the van for 1 year without having to do that and still works fine,
     
  3. Newbie123

    Newbie123 Forum Addict
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    Best bit of kit for batteries is a Swedish battery charger C tech Mxs 5.0 they are a 8 step charger for all types of 12v batts dry wet liesure they perform different sine wave charges over 8 cycles that give batts from 1.2 to 160ah a great little work out revived a few otherwise dead batts for me even put th e motorbike batt on once a year even after being on optimate through winter
     
  4. bluemonkey

    bluemonkey Guru
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    get a other car battery and put a split relay on it
     
  5. Newbie123

    Newbie123 Forum Addict
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    no keirs right think you just miss read that rc has he states he's been charging with optimate motorcycle which is a trickle charger not like the alternator on a car that can pump some oomph into your batt in van so his advice is right give that liesure batt some serious grief and give it the good charge it will respond if its not too old
     
  6. rcproperty

    rcproperty Hero
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    in the post he said he had problems with battery then said apparently you have to flatten them completely then charge them for 3 days at no less than 11 amps, which will explain why my other one appeared to be a dud.

    then he says he is using a motocycle charger.
     
  7. Newbie123

    Newbie123 Forum Addict
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    Confused me now I read that has he as always charged the batt with the optimate bike charger in which case needs to drain a bit more then pump up the charge to get the battery back to its proper state a liesure batt will recover some other batteries won't we use the liesure batts in invertors for emergency lighting and have recovered a few mobility batts in the same way that a mate now uses for his canal barge
     
  8. rcproperty

    rcproperty Hero
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    looks like both of us confused then! lol
     
  9. keir

    keir Guru
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    rc i think if like you, you keep it constantly charged with the a split charger its all good. but when you you start to use them like i do or like a trolley then by the advice i got today from the caravan guru man then yeah gotta drain em.

    newb123, that beefier charger i got aswell is a 12 cycle mofo so its a proper kick ass charger, i reckon i'll do the same as you with the bike battery i'll give it a right good charge in a couple of weeks before its dragged out of hibernation. mine's notorious for kicking the **** outa the battery cause its a twin
     
  10. Newbie123

    Newbie123 Forum Addict
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    The van alternator knocks out about 120-150 a giving a almost booster charge if you like over shorter periods like a fst charge hence why the batt doesn't die on short journeys the motorcycle charger amount to no charge against the liesure battery hence why the battery slowly died it got something but not the oomph batteries have a memory hence why it's best to discharge further otherwise the batt will always die at the same point in some cases then completely recharge if load meter shows good should be like a new one
     
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