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Knowledge Base : Tutorials : Battery Charging Articles : Make the Bad Sulfation Go Away!

Make the Bad Sulfation Go Away!

Make the Bad Sulfation Go Away

Sulfation (sul-fay-shun), the number one cause of early battery failures, can be safely reversed, using high frequency electronic pulses. Unlike other pulse type battery chargers that claim this or similar sounding features, VDC’s BatteryMINDers® use a range of high frequencies. This ensures both old and newly formed sulfation will be safely dissolved in the shortest possible time. Using just one fixed frequency may remove some, but not all, especially long established–hardened sulfate crystals.

These U.S. Patented methods are truly unique. They “dissolve” the sulfate rather than “destroying” or shaking it loose. By generating just the needed range of frequencies and avoiding high voltages, we eliminate potential damage to the batteries storage plates known as “flaking”. The sulfuric acid, the major ingredient in a sulfate crystal, can then easily pass into the electrolyte (liquid, gel or absorbed type). This immediately raises its specific gravity and frees the storage plates to now accept a fuller charge. It does this in the shortest possible time, without developing excessive heat. No loss of electrolyte takes place in this process, thus ensuring sealed batteries, as well as “wet”, never die due to loss of electrolyte. Have a look at our Battery Minder product page to see our great selection

Battery MINDer ChargerSeveral battery charger companies claim a battery will not develop sulfation if it is always kept fully charged. This is incorrect. All lead-acid storage batteries will develop sulphate during their life time. This includes the new sealed “dry batteries”, such as Optima, Odyssey, Exide and Interstate branded AGM-spiral-wound types. Batteries develop sulfation each time they are used (discharged – recharged). If they are overcharged, undercharged or left discharged for just a few days, they will rapidly develop sulfate. This condition can be exacerbated with smaller lead acid batteries, such as motorcycle batteries. Even when stored fully charged sulfate will form without a frequently applied maintenance charge. It must be charged enough to prevent the battery from dropping below 12.4 Volts* (2.07 volts / cell). Using or storing batteries in temperatures above 75 °F accelerates the rate of self-discharge and increases sulfation dramatically. In fact, the discharge rate doubles, as does sulfation, for every 10 °F rise above room temperature.

In summary, if you want your batteries to deliver the very best performance and have the longest possible life, they must be kept free of sulphate by desulfating them in the safest, most effective way. BatteryMINDers’ U.S. Patented** method is this most effective way and VDC Electronics guarantees it with a Manufacturers’ 100% Money Back Guarantee plus a 5 year “no hassle” full warranty

Here are the questions you should be asking yourself:

Battery MINDer 12 Volt

  • Do I want my batteries to last as long as possible (5+ years)?
  • Do I want the highest level of performance during their lifetime?
  • Do I want to them to charge as fast as safely possible?
  • Do I want to eliminate or greatly reduce battery maintenance (adding water, etc.)?
  • Do I want to use the lowest amount of electricity to charge my batteries?
  • Do I want to win back the price of the battery charger before I need to replace the battery I first bought it for? ***

If you answered yes to any of these questions, then you need a desulfating charger-maintainer. Remember, the Manufacturer guarantees their performance with a 100% Money Back Guarantee plus a five-year “no hassle”, 100% parts and labor or full replacement warranty.

* At room temperature. Applies to 12-Volt or 2 series-connected 6-volt batteries.

** U.S. Patent No. 6078166

*** Assumes you started with a new battery costing $85 - $150 and lasting at least twice as long as it would without desulfating it.

Choose Your Dusulfating Battery Charger


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9 people commented, Tech, Bob, Robert Tomich, Frank Douse, and 5 others
This article is rated 4.7 out of 5
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  • Bob
    Can you charge a battery while it is being desulferizing?

    Reply  •  Rated article 5  •  September 11, 2021 at 10:19 am
    • BatteryStuff Tech
      Many chargers offer both desulfation and a separate charging circuit, so it is possible as one does not affect the other.

      Reply  •  Rated article 5  •  November 1, 2021 at 11:33 am
  • Robert Tomich
    I have 8 L16 (24 volt) system with 700 amp hours hooked up series/parallel to run off grid cabin.Is there a way i can desulfation all these battery ? They were installed in 2008

    Reply  •  Rated article 4  •  September 1, 2021 at 7:33 am
    • BatteryStuff Tech
      Robert, at that age it might be hard to restore as the sulfation hardens as the battery ages, so very old batteries can present a challege when trying to desulfate. If you are simply just seeing signs of weakness you can try an onboard desulfator or a chemical called Battery Equaliser.

      Reply  •  Rated article 5  •  November 1, 2021 at 2:28 pm
  • Frank Douse
    How long does it take for a 24 AGM battery to become damaged when left being charged ? I was away on holiday for 5 weeks and had left my battery on charger during that time. On my return, my battery has , for 2 rounds of golf, failed to recharge when put back onto the charger. Is this to be expected, and what can I do to ‘mend -it’ and restore The batery to its normal state ? The battery is just over 1 year (13 months) old.

    Reply  •  October 26, 2014 at 4:00 pm
    • BatteryStuff Tech
      It is only recommend to leave a battery on a charger if that charger is a smart charger, and has a float maintenance mode. You could try an onboard desulfator to see if they can be brought back to life. I would suggest contacting our TECH Department for suggestions.

      Reply  •  Rated article 5  •  November 18, 2014 at 1:26 pm
  • Franklin Whateley
    make the battery good again

    Reply  •  Rated article 4  •  March 16, 2014 at 4:17 am
  • Jerry
    How can my odyssey pc-545 get sulfated if it‘s a dry battery?

    Reply  •  May 5, 2013 at 10:37 am
    • Jeremy Fear
      All lead acid chemistry batteries can sulphate.

      Reply  •  May 6, 2013 at 11:33 am



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