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Convert battery electric fencer to mains

  • 28-05-2012 1:16pm
    #1
    brinks_18476
    Closed Accounts Posts: 262 ✭✭


    Hi, is it possible to convert a battery powered electric fencer to a mains powered fencer cheaply?

    Thanks!


Comments

  • #2
    bbam
    Closed Accounts Posts: 7,410 ✭✭✭bbam


    Years ago we used to run the old Kolteck green mushroom fencer off a cheap battery charger. Ran like that for a good while before being stolen from the shed!
    Bought a mains fencer then.


  • #3
    pakalasa
    Closed Accounts Posts: 4,552 ✭✭✭pakalasa


    You could probably use a low Ampage 12V DC Power Supply. Maybe some electrician can recomend one.


  • #4
    yellowlabrador
    Registered Users, Registered Users 2 Posts: 1,191 ✭✭✭yellowlabrador


    Have you thought of a solar panel? It wouldn't be possible to run the fencer without first stepping down the voltage. This would be a waste of energy and maybe also a firehazard. A solar pnel would trickle charge the battery and keep it going


  • #5
    Muckit
    Registered Users, Registered Users 2 Posts: 11,174 ✭✭✭✭Muckit


    yellowlabrador wrote: »
    Have you thought of a solar panel? A solar panel would trickle charge the battery and keep it going

    Good idea ;) Would the battery running the fencer need to be a 12V wet as opposed to a 9V dry battery though?


  • #6
    yellowlabrador
    Registered Users, Registered Users 2 Posts: 1,191 ✭✭✭yellowlabrador


    Muckit wrote: »
    Good idea ;) Would the battery running the fencer need to be a 12V wet as opposed to a 9V dry battery though?
    You need to be able to recharge it. I would look online and see what is on offer. Otherwise , the cheapest solution would be an old car battery, or better still, a rechargeble torch battery.


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  • #7
    Farmer Pudsey
    Registered Users, Registered Users 2 Posts: 6,326 ✭✭✭Farmer Pudsey


    Most battery fencers are 9V so be careful. Some have the capability to take 9V and 12V however are 9V only. It will not matter wheather it is a wet or dry battery as long as you have Negative on negative and + on +.

    I worked an old battery fencer off a 9V transformer for a good while however you have to be careful as the quality of some transformers nowadays are very poor and if left in all the time may go on fire.

    If you get a transformer that is rated 9V it will tell if it is rated 9V+ or-. Cut the wire a few inches back from the jack test to see which wire is connected to outside of jack if you have a 9v+ transformer the negative terminal will be on outside of jack as this will be the earth, connect to negative terminal of fencer and the wire to center of jack ( harder to test as inner of jack will not be accessible) onto + terminal of fencer and it should work be be aware of fire hazzard.

    Have also seen a case where some one put a bar down into a car battery between cell 4 and 5 and it worked for a while.


  • #8
    brinks_18476
    Closed Accounts Posts: 262 ✭✭brinks_18476


    Thanks for taking time to reply, much appreciated.

    Will look into the solar panel idea. With The possible fire hazards outlined with using a 9v/12v transformer or hooking up a cheap battery charger I think i will forgot about the bodge job option and do it properly using a solar panel on the battery fencer or buy a new mains fencer


  • #9
    bbam
    Closed Accounts Posts: 7,410 ✭✭✭bbam


    Our portable fencer runs on 12V, we run it off a car battery, if the fence is kept clear of earths then it will work away for about 10 weeks between charges..

    We have the battery and the fencer in the bottom of one of those small 25l barrels with a lid and handles, handy for moving about..


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