X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 27 Nov 2005 21:53:07 -0500 Message-ID: X-Original-Return-Path: Received: from imo-d20.mx.aol.com ([205.188.139.136] verified) by logan.com (CommuniGate Pro SMTP 5.0.2) with ESMTP id 847921 for lml@lancaironline.net; Sun, 27 Nov 2005 15:31:51 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.188.139.136; envelope-from=Sky2high@aol.com Received: from Sky2high@aol.com by imo-d20.mx.aol.com (mail_out_v38_r6.3.) id q.277.8d0964 (48624) for ; Sun, 27 Nov 2005 15:31:00 -0500 (EST) From: Sky2high@aol.com X-Original-Message-ID: <277.8d0964.30bb7183@aol.com> X-Original-Date: Sun, 27 Nov 2005 15:30:59 EST Subject: Re: [LML] B and C Batteries X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1133123459" X-Mailer: 9.0 Security Edition for Windows sub 5300 X-Spam-Flag: NO -------------------------------1133123459 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 11/27/2005 1:39:17 P.M. Central Standard Time, dfs155@adelphia.net writes: The list went thru a "good battery/bad battery" discussion maybe a year or two ago - check the archives. I had trouble keeping sealed lead acid, recombinant gas Concorde batteries alive (RG25) in my LNC2 - three in about four years - though I went to an adjustable voltage regulator to be able to set the correct alternator output voltage per their tech gurus. No explanation, no ideas either. Too bad we can't get Hawker batteries here in the states. Dan, Interesting. It appears that not all Sealed Lead Acid (SLA) batteries are the same. That also goes for the safer Absorbed Glass Mat (AGM or no free liquid) batteries that many of us use. There are two very important considerations with these types of batteries: 1. The voltage regulator should deliver 14.5 (+ or - .2) VDC to properly maintain such batteries. AGM batteries favor the high side of that range. 2. Recharging such batteries is a challenge. If you use a regular automotive charger and leave it on long enough the charging voltage can rise above 15 VDC - ultimately leading to destruction of the battery. Trickle chargers can retain too high a residual voltage and diminish battery quality if active for a long period of time because of gassing. There are devices available (B&C, Battery Tender) that maintains a float voltage that keeps the SLA battery safely topped up over a long period of time. SLA/AMG batteries lose their capacity if left unused (uncharged) over a long period of time. I have found these sites to provide interesting reading material: _http://www.panasonic.com/industrial/battery/oem/chem/seal/_ (http://www.panasonic.com/industrial/battery/oem/chem/seal/) It is illuminating to read topics such as: _Overview Information on VRLA Batteries - 1603KB_ (http://www.panasonic.com/industrial/battery/oem/images/pdf/Panasonic_VRLA_Overview.pdf) (http://www.adobe.com/) _Precautions for Handling VRLA Batteries - 538KB_ (http://www.panasonic.com/industrial/battery/oem/images/pdf/Panasonic_VRLA_Precautions ForHandling.pdf) (http://www.adobe.com/) _VRLA Charge Methods - 508KB_ (http://www.panasonic.com/industrial/battery/oem/images/pdf/Panasonic_VRLA_ChargingMethods.pdf) (http://www.adobe.com/) One notes that the specs for the 12 VDC 28 AH SLA battery is interesting reading: _http://www.panasonic.com/industrial/battery/oem/images/pdf/Panasonic_VRLA_LC- X1228P_LC-X1228AP.pdf_ (http://www.panasonic.com/industrial/battery/oem/images/pdf/Panasonic_VRLA_LC-X1228P_LC-X1228AP.pdf) Other interesting reading about Battery Tender can be seen at: _http://batterytender.com/product_info.php?products_id=4_ (http://batterytender.com/product_info.php?products_id=4) Especially the FAQs: _http://batterytender.com/faqs.php_ (http://batterytender.com/faqs.php) If you use B&C products and are interested in their battery maintainer, review: _http://www.bandc.info/cgi-bin/ez-catalog/cat_display.cgi?4X358218_ (http://www.bandc.info/cgi-bin/ez-catalog/cat_display.cgi?4X358218) I use 3 Battery Tender Jrs. 1. Hangar - To recharge or maintain my SLA aircraft battery after electronic testing, etc. via the pig-tail connector located in my glove box. Of course the pig tail can be connected to my electric jacket liner for those really cold winter flights. 2. Shed -To keep my Deere tractor battery ready-to-go. This is necessary because of irregular use of the tractor (grass, leaves, snow blowing, etc) 3. Garage - To keep my SLA motorcycle battery in tip-top shape over periods of disuse such as during snowy icy road conditions and periods of extreme cold. Scott Krueger AKA Grayhawk Lancair N92EX IO320 SB 89/96 Aurora, IL (KARR) -------------------------------1133123459 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
In a message dated 11/27/2005 1:39:17 P.M. Central Standard Time,=20 dfs155@adelphia.net writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>The list=20 went thru a "good battery/bad battery" discussion maybe a year or
two a= go -=20 check the archives.

I had trouble keeping sealed lead acid, recombi= nant=20 gas Concorde batteries
alive (RG25) in my LNC2 - three in about four ye= ars=20 - though I went to an
adjustable voltage regulator to be able to set th= e=20 correct alternator output
voltage per their tech gurus. No explanation,= no=20 ideas either. Too bad we
can't get Hawker batteries here in the=20 states.
Dan,
 
Interesting.  It appears that not all Sealed Lead Acid (SLA) batte= ries=20 are the same.  That also goes for the safer Absorbed Glass Mat (AG= M or=20 no free liquid) batteries that many of us use.  There are two very=20 important considerations with these types of batteries:
 
1. The voltage regulator should deliver 14.5 (+ or - .2) VDC to properl= y=20 maintain such batteries.  AGM batteries favor the high side of that=20 range.
 
2. Recharging such batteries is a challenge.  If you use a regular= =20 automotive charger and leave it on long enough the charging voltage can= =20 rise above 15 VDC - ultimately leading to destruction of the battery. =20 Trickle chargers can retain too high a residual voltage and diminish battery= =20 quality if active for a long period of time because of gassing.  There=20= are=20 devices available (B&C, Battery Tender) that maintains a float volt= age=20 that keeps the SLA battery safely topped up over a long period of=20 time.
 
SLA/AMG batteries lose their capacity if left unused (uncharged) over a= =20 long period of time.  I have found these sites to provide interesting=20 reading material:
 
http://w= ww.panasonic.com/industrial/battery/oem/chem/seal/
 
It is illuminating to read topics such as:
 
<= IMG height=3D6=20 src=3D"http://www.panasonic.com/industrial/battery/oem/images/common/b= all.gif"=20 width=3D6 vspace=3D8> Overview=20 Information on VRLA Batteries - 1603KB 3D"Adobe
<= IMG height=3D6=20 src=3D"http://www.panasonic.com/industrial/battery/oem/images/common/b= all.gif"=20 width=3D6 vspace=3D8> Precautions=20 for Handling VRLA Batteries - 538KB 3D"Adobe
<= IMG height=3D6=20 src=3D"http://www.panasonic.com/industrial/battery/oem/images/common/b= all.gif"=20 width=3D6 vspace=3D8>
VRLA=20 Charge Methods - 508KB 3D"Adobe
 
 
One notes that the specs for the 12 VDC 28 AH SLA battery is=20 interesting reading:
 
http://www.panasonic.com/industrial/battery/= oem/images/pdf/Panasonic_VRLA_LC-X1228P_LC-X1228AP.pdf
 
Other interesting reading about Battery Tender can be seen at:
 
http://ba= tterytender.com/product_info.php?products_id=3D4
 
Especially the FAQs:
 
http://batterytender.com/faqs.php=
 
If you use B&C products and are interested in their battery maintai= ner,=20 review:
 
h= ttp://www.bandc.info/cgi-bin/ez-catalog/cat_display.cgi?4X358218
 
I use 3 Battery Tender Jrs.
 
1. Hangar - To recharge or maintain my SLA aircraft battery after=20 electronic testing, etc. via the pig-tail connector located in my glove= =20 box.  Of course the pig tail can be connected to my electric jacket lin= er=20 for those really cold winter flights. 
 
2. Shed -To keep my Deere tractor battery ready-to-go.  This is=20 necessary because of irregular use of the tractor (grass, leaves, snow blowi= ng,=20 etc)
 
3. Garage - To keep my SLA motorcycle battery in tip-top shap= e=20 over periods of disuse such as during snowy icy road conditions=20 and periods of extreme cold.
 
 
Scott Krueger=20 AKA Grayhawk
Lancair N92EX IO320 SB 89/96
Aurora, IL=20 (KARR)



-------------------------------1133123459--