---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Mon 10/31/11: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:56 AM - Re: RG Batteries: I learned something last night (Robert L. Nuckolls, III) 2. 12:59 PM - Any experience with "Battery Marvel"? (DCS317@aol.com) 3. 06:09 PM - Virus Corrupting my system (Michael Welch) 4. 06:11 PM - Re: Any experience with "Battery Marvel"? (Robert L. Nuckolls, III) ________________________________ Message 1 _____________________________________ Time: 07:56:03 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: RG Batteries: I learned something last night At 11:59 PM 10/30/2011, you wrote: >A few years back, we had a dead short on the battery cable before >the contactor that drained the battery dead, dead, dead. I arrived >and removed the short after about 2 hours. The battery read ~ 5v at >that time. Charged it overnight and put it back in service. Several >weeks later I replaced it when it failed to start the engine, >charged it and did a CBA II capacity test on it at 4 amps. It >delivered just under 24 ah - not bad for a severely abused 24 ah >battery. I'm still using it as a shop battery. This is exactly the sort of event that can be recovered. There's a process described in the Concorde maintenance documents for doing one or more recharge/discharge cycles on a badly abused battery. If (as the instance you describe) the recovery is started soon, a lot if not all of the battery's before-incident condition can be restored. Thanks for the input! Bob . . . ________________________________ Message 2 _____________________________________ Time: 12:59:01 PM PST US From: DCS317@aol.com Subject: AeroElectric-List: 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.batterymarvel.com/) _http://www.rivalonline.com/products.htm_ (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 ________________________________ Message 3 _____________________________________ Time: 06:09:08 PM PST US Subject: AeroElectric-List: Virus Corrupting my system From: Michael Welch List Members, My sincere apologies to all. It appears as though my computer was attacked by a virus within the last hour. My son, the computer whiz, has told me how to get it resolved immediately, which I will. Sorry if this causes anyone else an inconvenience, too. Mike Welch ________________________________ Message 4 _____________________________________ Time: 06:11:04 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Any experience with "Battery Marvel"? At 02:53 PM 10/31/2011, you wrote: >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 . . . ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.