Description
IMPORTANT!!
All Aviation specific BatteryMINDer models are designed exclusively for use with either SEALED (AGM-non liquid) or Flooded (liquid w/ filler caps) as manufactured by Concorde, Gill and EnerSys (Odyssey, Hawker) for use on non-commercial aircraft specifically approved by FAA and/or PMA. ALL these types, regardless of manufacture are based on LEAD-ACID chemistry, NOT Nickel Cadmium, Nickel Metal Hydride, or any other chemistry-construction. If you have any doubt about the battery you intend to use with any of our BatteryMINDer products, please confirm these facts with the maker of your particular battery type.
BatteryMINDer® Aviation Specific Battery Charger Model 24041-AA-S2
BatteryMINDer Aviation-Specific 24-Volt 4A Charger-Maintainer-Desulfator-Conditioner Plug 'n Run Model
VDC Electronics now has available a Plug 'n Run Aviation Specific versions of its 24-V Maintenance Charger - De-Sulfator - Conditioners. Designated as the 12-V model 24041-AA-S2 (Aviation Specific), it is similar to model 24041-AA-S1 except for its Plug ‘n Run feature, eliminating the need to set neither the output current nor battery type, before operating. This feature is of particular importance if any person, unfamiliar with the setting requirements, is involved in maintaining the battery.
The model include full-time pulsed de-sulfation circuitry designed to safely dissolve sulfation build-up on the battery's storage plates, restoring lost cranking power and extending life. Our de-sulfation method is fully automatic, does not use potentially damaging high voltage and is exclusively protected by two U.S. patents.
Presently only a small number of VDC dealers carry this -AA-S2 model. We suggest calling us directly for those who do, at (800) 379-5579 Ext. 251 or 208 (ET, M-F, 9-6) or contacting Customer service at our contact page.
Features
- For all size and type 24-Volt aviation batteries including sealed AGM-maintenance-free and filler cap maintenance type
- Instant alternator condition at the push of a button.
- Guaranteed never to over-charge, regardless of time or temperature (32°F - 125°F) with correct battery type setting and ABS-248 temperature sensors correctly installed on either battery terminal connection
- Auto-restart after power failure
- Safely charges up to 200% faster than conventional chargers
- Maintains from 1 - 6 batteries at a time (parallel connected)
- Automatically dissolves power-robbing sulfation using safe low voltage pulse technology (U.S. Patented)
- Microprocessor controlled pulsed output ensures 100% full charge
- Temperature compensation extends battery life by more than 200 Cycles (full charge-discharge cycles) with ABS temperature sensor1
- High efficiency design = low monthly operating cost of less than 50¢2
- Weather-proof enclosure
- 24 volt PowerPlug (fused) allows charger to be easily connected to battery via input 24-V power receptacle
- 1 year 100% money-back guarantee + five (5) year "no hassle" warranty3 Size/Weight: 5-1/2" L x 5-1/2" W x 2 1/4" H / 3.0 lbs.
1 When compared to chargers without an "at-the-battery" sensor
2 Based on running 24-7 at an electricity cost of 18 cents / Kilowatt Hr.
3 We guarantee to significantly increase both your battery's life and performance or we will refund 100% of the price you paid, including tax, shipping and handling
Presently only a small number of VDC dealers carry this -AA-S2 models. We suggest calling us directly for those who do, at (800) 379-5579 Ext. 251 or 208 (ET, M-F, 9-6) or contacting our customer service at our contact page.

Instructions
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"Call for availability and your price for this new and improved waterproof unit" 800-379-5579 x251 (ET)
What is Sulfation (sul-fay-shun) and How Does It Affect Batteries?
When batteries are improperly maintained (over-under charged or left uncharged for extended periods) small crystals of sulfuric acid from the battery’s electrolyte (liquid or paste) form on the battery’s charge plates. They act as a resistor (barrier) preventing the battery from ever again accepting a full charge, no matter how long a charging source may be connected. Once this occurs, the cranking power of the battery is severely reduced, as well as its life. Aviation batteries are affected the most because they have been designed for maximum performance in the smallest-lightest case possible.
VDC Electronics has developed simple, but highly effective circuitry, able to safely dissolve sulfation, restoring much, if not all, of the lost power, providing the battery’s cells are not shorted or structurally damaged. This U.S. Patented approach is believed to be the most effective method for eliminating even the oldest hardened sulfate. By generating safe, wide-band, random frequency electronic pulses, we are able to cover the full range of sulfate crystals sizes, in the shortest possible time. Depending on the amount of sulfate and its age, complete de-sulfation can occur within several days to several weeks. De-sulfation takes place automatically, while the battery is being bulk or maintenance level charged.
Note: Both BatteryMINDer models (12-V or 24-V) provide “full-time” de-sulfation. We guarantee to safely eliminate all sulfate from any non-commercial aviation battery meeting the criteria clearly stated in our Instruction Manuals.

What makes the BatteryMINDer® desulfation method unique?
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 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.
Our U.S. Patented methods are truly unique. We “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.
Several 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” 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 or undercharged or left discharged, some for even just several days, they will rapidly develop sulfate. 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 25.2-Volts* (4.2-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 100% Money Back Guarantee plus a 5 year “no hassle” full warranty.
Here are the questions you should be asking yourself:
- 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 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, we guarantee 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.