Charge setting for AGM Battery

Discussion in 'Tech/Mech General' started by 1948, May 14, 2012.

  1. 1948

    1948 Read Only Funster

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    JUst bought AGM batteries to replace gel batteries, the electroblok charge setting is in gel position at present
    Can anyone advise whether I need to move the charge setting to wet for the new AGM batteries. or leave the setting at gel position.
    Thanks in advance
     
  2. Phill D

    Phill D

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  3. TheBig1

    TheBig1 Funster Life Member

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    AGMs are just a variant of the SLA, so I would say change it. Gels need a higher initial charge voltage that can damage the plates in a lead acid
     
  4. Phill D

    Phill D

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    Quote below from a battery forum... hope it helps


    A fully charged 12 volt AGM battery's voltage should read about 12.7 volts. You should charge it with about 1 - 2 amps of charge current at charge voltage 14.2 - 14.4 Vdc then drop the current to a trickle and float the voltage at about 13.4 after full charge.
    here is a nice charger in your price range, if you do a search you may find a better deal, but Northern is a well known company and from the description this charger will address all your concerns.
    http://www.northerntool.com/webapp/wcs/s…

    I would not use a charger that does not have current limiting, i.e. a normal flooded-cell car battery charger or any other method without limiting current. connect + to + and - to -.
     
  5. 1948

    1948 Read Only Funster

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    Just raed the article a bit confused says AGM works like lead acid batteries but then says it can be discharged to 50% compare with LA battery 80% Then go on to say charging method important. Should it be charged like LA or otherwise. No wiser, gel or wet setting ??
    Charger inbulit in electroblok

    Big 1
    was told that in gel setting my charge will be 14.3v for 8 hours then floating charge 13,7v at wet setting charge 14.3v for one hour then 13.7v after My problem is which setting my new AGM battery applies
     
  6. Phill D

    Phill D

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  7. Phill D

    Phill D

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    seems there may be 3 settings needed on a charger , wet / Gel / AGM i was trying to learn while "trying to help out"" :Doh::Doh: sorry:Eeek:
     
  8. 1948

    1948 Read Only Funster

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  9. Phill D

    Phill D

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    mine only has Gel and Wet also but on balance it looks athough wet is the closest setting to avoid undercharging the AGM.. good luck:thumb:
     
  10. pappajohn

    pappajohn Funster Life Member

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    an AGM (absorbed glass mat) is a wet battery but the electrolyte is suspended in the glass mat rather than a free running liquid.

    Loads of very good battery advice.....Read HERE
     
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