---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Fri 07/07/23: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:43 PM - Re: Re: Excessive Amperage (Paul Eckenroth) 2. 07:30 PM - Re: Re: Excessive Amperage (Charlie England) ________________________________ Message 1 _____________________________________ Time: 02:43:33 PM PST US From: Paul Eckenroth Subject: Re: AeroElectric-List: Re: Excessive Amperage David You refer to gizmos made to take control of the charge rate such that it stays under the alternators design limits. Can you be more specific as to what these gizmos are. I have been looking for something like this to try and keep the stator in my Revmaster engine from burning up again. I believe that controlling the output is the key. Thanks Paul On Sun, Jul 2, 2023 at 2:19=AFPM skywagon185guy wrote: > Battery....Lithium > > Joe makes a very good point about the potential of Lithium base batteries > to potentially cause charging problems. > The other side of this combo is that when a "normal" alternator is runnin g > at idle speeds the Lithium is able to handle receiving a very heavy curre nt > charge rate such that the alternator could easily overheat and burn some > internal part due to lack of cooling for such a heavy current draw. There > are gizmos made to take control of the charge rate such that it stays und er > the alternators design limits. > The marine and RV folks use these controllers to safeguard their expensiv e > stuff. > David > > On Sun, Jul 2, 2023 at 6:02=AFAM user9253 wrote : > >> >> Below is from https://earthxbatteries.com/faqs/ >> I just installed my EarthX battery in my aircraft and started the engine >> and my charging amps was really high, is this normal? >> . >> Yes, this is normal. A lithium battery can and will accept a much higher >> charging current than an equal size lead acid battery. >> If your battery is not fully charged, your alternator can potentially >> output a current equal to >> or slightly above the alternator=99s rating for a few minutes to top the >> battery off. >> . . . >> You must use a lithium battery that is designed to handle the current >> from the alternator >> or you can damage the battery, cause premature failure or possible even >> cell rupture. >> >> -------- >> Joe Gores >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/viewtopic.php?p=511019#511019 >> >> >> >> >> >> >> ========== >> - >> Electric-List" rel="noreferrer" target="_blank"> >> http://www.matronics.com/Navigator?AeroElectric-List >> ========== >> FORUMS - >> eferrer" target="_blank">http://forums.matronics.com >> ========== >> WIKI - >> errer" target="_blank">http://wiki.matronics.com >> ========== >> b Site - >> -Matt Dralle, List Admin. >> ="noreferrer" target="_blank">https://matronics.com/contribution >> ========== >> >> >> >> ________________________________ Message 2 _____________________________________ Time: 07:30:29 PM PST US Subject: Re: AeroElectric-List: Re: Excessive Amperage From: Charlie England Assuming it's a 'dynamo' (permanent magnet) style alternator, and assuming that the rectifier/regulator is not a 'shunt' type regulator, then just about any switching style current regulator should do the job as long as it's designed to handle the level of current you want. The one in the link below is rated for 300 watts, which would be around 20A @14.7 volts. I'd derate it to lower than that to ensure some level of reliability, and I'd certainly provide forced air cooling. https://www.amazon.com/Anmbest-Converter-Adjustable-Regulator-Protection/dp/B07R832BRX/ref=asc_df_B07R832BRX/?tag=hyprod-20&linkCode=df0&hvadid=366402536789&hvpos=&hvnetw=g&hvrand=712971344780976433&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9013892&hvtargid=pla-786421359827&psc=1&tag=&ref=&adgrpid=75347436439&hvpone=&hvptwo=&hvadid=366402536789&hvpos=&hvnetw=g&hvrand=712971344780976433&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9013892&hvtargid=pla-786421359827 On 7/7/2023 4:42 PM, Paul Eckenroth wrote: > David > You refer to gizmos made to take control of the charge rate such that > it stays under the alternators design limits. Can you be more > specific as to what these gizmos are. I have been looking for > something like this to try and keep the stator in my Revmaster engine > from burning up again. I believe that controlling the output is the key. > Thanks > Paul > > On Sun, Jul 2, 2023 at 2:19PM skywagon185guy > wrote: > > Battery....Lithium > > Joe makes a very good point about the potential of Lithium base > batteries to potentially cause charging problems. > The other side of this combo is that when a "normal" alternator is > running at idle speeds the Lithium is able to handle receiving a > very heavy current charge rate such that the alternator could > easily overheat and burn some internal part due to lack of cooling > for such a heavy current draw. There are gizmos made to take > control of the charge rate such that it stays under the > alternators design limits. > The marine and RV folks use these controllers to safeguard their > expensive stuff. > David > > On Sun, Jul 2, 2023 at 6:02AM user9253 wrote: > > > > Below is from https://earthxbatteries.com/faqs/ > I just installed my EarthX battery in my aircraft and started > the engine and my charging amps was really high, is this normal? > . > Yes, this is normal. A lithium battery can and will accept a > much higher charging current than an equal size lead acid battery. > If your battery is not fully charged, your alternator can > potentially output a current equal to > or slightly above the alternators rating for a few minutes > to top the battery off. > . . . > You must use a lithium battery that is designed to handle the > current from the alternator > or you can damage the battery, cause premature failure or > possible even cell rupture. > > -------- > Joe Gores > -- This email has been checked for viruses by Avast antivirus software. www.avast.com ------------------------------------------------------------------------------------- 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.