Ahmet , I certainly do apologize! I missed THAT statement entirely. I can clearly see how that approach would get one half the house bank up to a full charge. Then one would set the system up to do the other half on the next charge cycle. I can see how that might reduce the damage to an AGM battery system. Once again I apologize for not seeing your statement "charging one half of the house bank from the other half with an efficient power converter" .
Eric Thompson Sunnyvale, California [email protected] ----- Original Message ----- From: "ahmet erkan" <[email protected]> To: <[email protected]> Sent: Tuesday, May 03, 2011 4:29 AM Subject: Re: [Liveaboard] AGM battery question (Eric the nasty) The solution: > I don't have a clue. Apparently a secret as I have asked twice and > received > no information except some dimensions (without units, just useless > numbers) > and operating procedures. No technical details at all. > > I would guess he wants to make money and is convinced the details would > allow us all to build our own units. Eric, I have explained the theory in one e-mail responding to your message and also the e-mail below responding to Norm. What part of "charging one half of the housebank from the other half with an efficient power converter" don't you understand? If you want me to explain how to design the converter, I will have to write a book for you. I am trying to solve a problem for myself and decided to share it with the group. There is no product right know but you wanted to know what size it is, so I estimated it for you, you are not happy. There is going to be about 100 parts and two PCB's so I estimated the price at $300 and you are not happy. And I thought it was difficult to make women happy, but you have proven that theory wrong my friend. I had plans to retire early and start sailing. Mr. Obama made this dream tough for me. So I am trying to provide a service to cruisers by jointly developing a product while I stil have to go to work to earn a living. I am trying to share the expenses of the development as well as the performance specifications with the group. Nothing is patented but anybody who wants to market this product can patent iot either because all the details are disclosed here. Do you want us to build it for $200 and buy it at a fair $300 or do you want West Marine to build it at high volume for $100 and sell it to you for $600? Please stop making nasty remarks and wasting time that we could be spending on development. And thank you I am late for work again and accomplished nothing towards the development. To answer Neals question, yes the thing will have two adjustments for float voltage and two more adjustments for Equilize. You can adjust it for any type of battery or any situation where the half banks have different types of batteries. I hope to have more productive discussions about this project if the group is interested about this subject as Norm said. Thanks Ahmet By the way, the units on estimated dimensions that I forgot and Eric pointed out most sarcastically is inches > From: [email protected] > To: [email protected] > Date: Mon, 2 May 2011 22:19:30 -0700 > Subject: Re: [Liveaboard] AGM battery question ($300 Question) > > Neal, > The problem: > If one is using the main propulsion engine for battery charging only (at > anchor for days or weeks, no solar or not enough, no wind power or not > enough) then the engine is being abused ( too lightly loaded, leading to > damage ) and burning fuel at a very inefficient rate once the charge cycle > gets past the bulk phase. > > Oh yeah. The other end of the problem is that batteries, especially AGM > batteries need to be FULLY recharged every time a charge cycle is started. > > The solution: > I don't have a clue. Apparently a secret as I have asked twice and > received > no information except some dimensions (without units, just useless > numbers) > and operating procedures. No technical details at all. > > I would guess he wants to make money and is convinced the details would > allow us all to build our own units. > > > Eric Thompson > Sunnyvale, California > [email protected] > > ----- Original Message ----- > From: "Sea Quell crew." <[email protected]> > To: <[email protected]> > Sent: Monday, May 02, 2011 8:31 PM > Subject: Re: [Liveaboard] AGM battery question ($300 Question) > > > > > > This is interesting but baffling. I must have missed some details, or > > it's just over my head. > > > > Perhaps someone can restate the problem and how this device solves the > > problem? > > > > Thanks! > > -Neal. > > > > > > > > ahmet erkan wrote: > >> Hi Norm, > >> If what you say is true, I must be real lousy at reading what people > >> feel. > >> I thought the general feeling in the group other than a couple of guys > >> was : > >> "we don't have a problem charging our batteries why don't this Jerk > >> just > >> shut up" > >> OK this box is about 4 X 3 X 6 and has a terminal block with > >> seven connections. > >> Five leads go to the "dual battery switch" and two leads are ground. > >> The house bank is wired with a conventional dual battery switch and > >> typically each > >> bank consists of 300A/H lead acid flooded cell deep discharge > >> batteries. > >> The user keeps the battery switch at the "both" setting while running > >> the engine > >> and bulk charging the batteries at maximum alternator output. After the > >> battery > >> reaches the bulk charge terminal voltage and the regulator prevents the > >> battery > >> voltage from increasing any further, and the alternator output current > >> begins to > >> reduce, the engine can be shut down. As long as the battery switch is > >> in > >> the "both" > >> position nothing happens. When the user flips the battery switch to #1 > >> or #2 position > >> the equlizer senses the condition and the bank that is open circuited > >> begins to get > >> charged at less than 0.02C (C=A/H rating) > >> When the open circuited bank reaches the float voltage and the float > >> current > >> reduces to the fully charged level the equilizer illuminates a green > >> LED. > >> The user switches the battery switch to "both" position and continues > >> to > >> use the > >> energy stored in his batteries until the next bulk charge becomes > >> necessary. > >> Captain Lew Hodgett recommended 600 to 900A/H bank as a minimum, so > >> lets > >> say > >> half the bank is 450A/H. A useful piece of information from the list > >> would be the > >> charge current to maintain this bank at lets say +15% float voltage > >> level at lets say > >> 30C temperature. Maybe 500mA? Anyway, let's see if anyone from the > >> list is willing > >> to take a measurement from their battery bank and help us design this > >> beast. > >> More later > >> Good night > >> Ahmet > >> > >> > >> > >> > >> > >> ------------------------------------------------------------------------ > >> From: [email protected] > >> To: [email protected] > >> Date: Mon, 2 May 2011 12:56:10 -0400 > >> Subject: Re: [Liveaboard] AGM battery question ($300 Question) > >> > >> Ahmet, > >> > >> I think many of us are interested in this device/technique and were > >> just > >> waiting to read about it from you on the List > >> > >> Norm > >> S/V Bandersnatch > >> > >> > >> > >> > >> > >> > >> Since you and I are evidently the only persons interested, I will write > >> to you privately. > >> > >> _______________________________________________ Liveaboard mailing list > >> [email protected] To adjust your membership settings over > >> the web http://liveaboardonline.com/mailman/listinfo/liveaboard To > >> subscribe send an email to [email protected] To > >> unsubscribe send an email to [email protected] The > >> archives are at http://www.liveaboardonline.com/pipermail/liveaboard/ > >> To > >> search the archives > >> http://www.mail-archive.com/[email protected] The Mailman > >> Users Guide can be found here > >> http://www.gnu.org/software/mailman/mailman-member/index.html > >> > >> > >> ------------------------------------------------------------------------ > >> > >> _______________________________________________ > >> Liveaboard mailing list > >> [email protected] > >> To adjust your membership settings over the web > >> http://liveaboardonline.com/mailman/listinfo/liveaboard > >> To subscribe send an email to [email protected] > >> > >> To unsubscribe send an email to [email protected] > >> The archives are at > >> http://www.liveaboardonline.com/pipermail/liveaboard/ > >> > >> To search the archives > >> http://www.mail-archive.com/[email protected] > >> > >> The Mailman Users Guide can be found here > >> http://www.gnu.org/software/mailman/mailman-member/index.html > >> > >> > >> ------------------------------------------------------------------------ > >> > >> No virus found in this message. > >> Checked by AVG - www.avg.com <http://www.avg.com> > >> Version: 10.0.1209 / Virus Database: 1500/3611 - Release Date: 05/02/11 > >> > > _______________________________________________ > > Liveaboard mailing list > > [email protected] > > To adjust your membership settings over the web > > http://liveaboardonline.com/mailman/listinfo/liveaboard > > To subscribe send an email to [email protected] > > > > To unsubscribe send an email to [email protected] > > The archives are at > > http://www.liveaboardonline.com/pipermail/liveaboard/ > > > > To search the archives > > http://www.mail-archive.com/[email protected] > > > > The Mailman Users Guide can be found here > > http://www.gnu.org/software/mailman/mailman-member/index.html > > _______________________________________________ > Liveaboard mailing list > [email protected] > To adjust your membership settings over the web > http://liveaboardonline.com/mailman/listinfo/liveaboard > To subscribe send an email to [email protected] > > To unsubscribe send an email to [email protected] > The archives are at http://www.liveaboardonline.com/pipermail/liveaboard/ > > To search the archives > http://www.mail-archive.com/[email protected] > > The Mailman Users Guide can be found here > http://www.gnu.org/software/mailman/mailman-member/index.html -------------------------------------------------------------------------------- > _______________________________________________ > Liveaboard mailing list > [email protected] > To adjust your membership settings over the web > http://liveaboardonline.com/mailman/listinfo/liveaboard > To subscribe send an email to [email protected] > > To unsubscribe send an email to [email protected] > The archives are at http://www.liveaboardonline.com/pipermail/liveaboard/ > > To search the archives > http://www.mail-archive.com/[email protected] > > The Mailman Users Guide can be found here > http://www.gnu.org/software/mailman/mailman-member/index.html _______________________________________________ Liveaboard mailing list [email protected] To adjust your membership settings over the web http://liveaboardonline.com/mailman/listinfo/liveaboard To subscribe send an email to [email protected] To unsubscribe send an email to [email protected] The archives are at http://www.liveaboardonline.com/pipermail/liveaboard/ To search the archives http://www.mail-archive.com/[email protected] The Mailman Users Guide can be found here http://www.gnu.org/software/mailman/mailman-member/index.html
