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Any experience with "Battery Marvel"?

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DCS317(at)aol.com
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Posted: Mon Oct 31, 2011 11:59 am Post subject: Any experience with "Battery Marvel"?

Any experience with "Battery Marvel" ?   Battery Marvel is a  device "designed to constantly monitor the health of common 12v lead-acid  batteries...."  The write-up in "Nuts and Volts" magazine November 2011  pp  34-39 is encouraging, but I'd like the opinions of others.  The  author indicates "During the first few seconds at power-up the Battery Marvel  transmits the historical data...."  Next month they propose to show the  reader how to build an optical data reader that can capture historical details  (e.g., voltage drop after energizing starter motor and other details) and enable  it to be viewed on a PC.

  

 I've been a close viewer of the discussions on battery health and a few  months ago bought the West Mountain Radio CBA-III Computerized Battery Analyzer  after Bob's favorable comment.  Some links to the Battery Marvel device $29  fully assembled, $19 kit (a lot cheaper than the CBA-III):

  

 http://www.batterymarvel.com/

  

 http://www.rivalonline.com/products.htm

  

 I have no knowledge of the individuals associated with Battery Marvel and  no financial interest.

  

 Don

 RV-8 N417DS 

  

 [quote][b]

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nuckolls.bob(at)aeroelect
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Posted: Mon Oct 31, 2011 5:11 pm Post subject: Any experience with "Battery Marvel"?

At 02:53 PM 10/31/2011, you wrote:

  	  Quote: 	
		   Any experience with "Battery Marvel" ?   Battery Marvel is a device "designed to constantly monitor the health of common 12v lead-acid batteries...."  The write-up in "Nuts and Volts" magazine November 2011 pp  34-39 is encouraging, but I'd like the opinions of others.  The author indicates "During the first few seconds at power-up the Battery Marvel transmits the historical data...."  Next month they propose to show the reader how to build an optical data reader that can capture historical details (e.g., voltage drop after energizing starter motor and other details) and enable it to be viewed on a PC.

  

 I've been a close viewer of the discussions on battery health and a few months ago bought the West Mountain Radio CBA-III Computerized Battery Analyzer after Bob's favorable comment.  Some links to the Battery Marvel device $29 fully assembled, $19 kit (a lot cheaper than the CBA-III):

  

 http://www.batterymarvel.com/ 

  

  http://www.rivalonline.com/products.htm

  

 I have no knowledge of the individuals associated with Battery Marvel and no financial interest. 	


   Approach with caution. I'm not suggesting that

   the device doesn't offer 'useful' information of

   some sort . . . the question is WHAT information?



   Given that it's a 2-wire connection the ONLY parameter

   it can monitor is voltage. Hence, for it to provide useful

   information, it must be able to INTERPRET dynamic voltage

   values and make some judgement as to potential failures

   based on shape, amplitude and timing of voltage wiggles.

   It's not unlike knowing how the legacy minus-0-plus battery

   ammeter behaved in cars and many Cessnas.



   Devices with nothing but light bulbs must be endowed

   with similar intelligence and deductive skills

   that a skilled and observant pilot might exercise while

   watching a voltmeter.



   Did the nuts-n-volts article explain principals of

   operation? Better yet, was there source code for

   a DIY project?



   The magazines have been full of ads for sundry electro-

   whizzies and gizmos that promised great returns on

   investment for everything from recovering trashed batteries

   to huge boosts in gas mileage. Unless they are fully

   disclosed and open to repeatable validation of an experiment,

   let the buyer beware.



   The CBA-III offers plotted numbers. This little feller

   flashes lights. I understand and can use the numbers.

   don't know about the lights.



   Bob . . .    [quote][b]

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