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Search preserved mailing-list messages and current email and website contributions. Current posts are searchable before weekly archival. Recovery gaps remain possible. Words are matched together; try fewer terms if needed.

Page 1+: 60 results shown for State-of-charge.

Source-balanced relevance: matches from both collections are interleaved, with source dates breaking ties. Restoration time is not the original posting date.

  • Alternator charging ability
    Historical mailing list - Arkady Mirvis
    Thu, 29 Apr 2010 23:33:15 +0100
    ...Assuming that (3) batteries, each rated 65 amper-hours, connected in parallel, and at 80% state of charge, what alternator output amperage is expected...
  • Re: charge rate at main & aux batt
    Historical mailing list - Dennis Haynes
    Mon, 27 Mar 2006 06:49:29 -0500
    ...The batteries current draw is based on its charge acceptance which will be a function of state of charge, (SOC), and temperature. The other...
  • Re: Low-voltage alarm
    Historical mailing list - Michael Elliott
    Mon, 18 Jun 2007 21:33:32 -0700
    ...11.7V pretty much means that the battery is at 25% state of charge. It's a good place to stay above: "Occasional dips...
  • RE: AC Question
    Historical mailing list - Michael A. Radtke
    Fri, 28 Mar 1997 10:38:57 -0700
    Nate El Great, Get a new mechanic. The compressor has no dependency on the state of charge at AC startup time. Mike
  • Re: Alternator charging ability
    Historical mailing list - Tom Hargrave
    Thu, 29 Apr 2010 19:28:20 -0500
    ...Assuming that (3) batteries, each rated 65 amper-hours, connected in parallel, and at 80% state of charge, what alternator output amperage is expected...
  • Re: Low-voltage alarm
    Historical mailing list - Dennis Haynes
    Tue, 19 Jun 2007 12:00:48 -0400
    ...11.7V pretty much means that the battery is at 25% state of >charge. It's a good place to stay above: "Occasional dips...
  • Re: Deep cycle battery - 85 Home Made Westfalia
    Historical mailing list - pensioner
    Fri, 26 Apr 2002 14:51:37 -0700
    ...If the alternator is not supplying power, (motor off) then the batteries would tend to an equalibrium state of charge in which each battery...
  • Re: charge rate at main & aux batt
    Historical mailing list - TC
    Mon, 27 Mar 2006 06:48:35 -0800
    ...The batteries current draw is based on its charge acceptance > which will be a function of state of charge, (SOC), and temperature. > The other...
  • charge rate at main & aux batt
    Historical mailing list - Gerald Masar
    Sun, 26 Mar 2006 23:09:17 -0700
    ...happens at the aux battery if it was still at a lower state of charge? Hope this makes sense, and thanks. Jerry in Arizona
  • Re: About them Norcold refrigerators
    Historical mailing list - Otmar
    Wed, 13 Jul 2005 09:52:41 -0700
    ...Since the >alternator is regulated at a fixed voltage and does not compensate for >battery state of charge or temperature, it is also a...
  • RE: AC Question
    Historical mailing list
    Fri, 28 Mar 1997 12:05:50 -0800
    ...The compressor has no dependency on the state of charge at AC startup time. > Hmm. My A/C certainly DOES depend on this. There...
  • Re: Correction on fan amperage
    Historical mailing list - Dennis Haynes
    Tue, 20 Jun 2006 11:14:28 -0400
    ...Since you do not run a battery below a 20% state of charge you theoretically need at least a 100 A/H battery to...
  • Re: Only 13V from Alternator
    Historical mailing list - Dennis Haynes
    Sat, 5 Sep 2009 10:27:46 -0400
    ...As I understand it, the voltage regulator in the alternator does not know the battery state of charge. State of charge cannot be determined...
  • Re: About them Norcold refrigerators
    Historical mailing list - Dennis Haynes
    Wed, 13 Jul 2005 08:02:04 -0400
    ...Since the alternator is regulated at a fixed voltage and does not compensate for battery state of charge or temperature, it is also a...
  • Re: Sure Power 1315 question > monitoring battery
    Historical mailing list - Michael Elliott
    Wed, 13 Feb 2008 08:17:51 -0800
    The state of charge of a battery can indeed be determined with a voltmeter, but the battery needs to be disconnected from any loads...
  • Re: Only 13V from Alternator
    Historical mailing list - Rocket J Squirrel
    Sat, 5 Sep 2009 12:31:14 -0700
    ...However, depending on system load and a battery at > a low state of charge, the alternator may not produce enough current at idle > to...
  • RE: AC Question
    Historical mailing list - Frank Terhaar-Yonkers
    Fri, 28 Mar 1997 18:28:46 GMT
    ...The compressor has no dependency on the state of charge at AC startup time. > >Mike > \\\\////\\\\////\\\\\////\\\\\////\\\\////\\\\////\\\\////\\\\////\\\\////\\\\ Frank Terhaar-Yonkers Cisco Systems, Inc. Engineering Services, W2...
  • Re: Only 13V from Alternator
    Historical mailing list - Rocket J Squirrel
    Fri, 4 Sep 2009 13:17:43 -0700
    ...As I understand it, the voltage regulator in the alternator does not know the battery state of charge. State of charge cannot be determined...
  • Re: Sure Power 1315 question > monitoring battery
    Historical mailing list - Loren Busch
    Wed, 13 Feb 2008 10:24:22 -0800
    ...state of charge. > > For a generic flooded-cell lead acid 12 volt battery, here's the > relationship between no-load voltage and state of...
  • Re: Sure Power 1315 question > monitoring battery
    Historical mailing list - Larry Alofs
    Wed, 13 Feb 2008 14:23:26 -0600
    ...On Feb 13, 2008 10:17 AM, Michael Elliott <camping.elliott@gmail.com> wrote: > The state of charge of a battery can indeed be...
  • Re: Battery Woes/Choice
    Historical mailing list - Mike Elliott
    Mon, 9 Jun 2008 14:31:49 -0700
    ...The wiki has some possibly useful stuff, at http://vanagonwiki.net/index.php/Aux_Battery#Determining_Battery_State_of_Charge and from there you...
  • Re: fix hole in battery
    Historical mailing list - Dennis Haynes
    Mon, 29 Dec 2008 00:33:21 -0500
    ...You will need to get battery acid to refill the cell and you may need to adjust the concentration depending on the state of...
  • Re: Test equipment--"Official VW multimeter"
    Historical mailing list - Pat Collins
    Wed, 29 Sep 1999 16:28:01 GMT
    ...measuring the state of charge of your batteries, among other > things. What is the difference if the battery reads 12 V or 12.1...
  • Re: Aux Battery Charging
    Historical mailing list - Richard A Jones
    Tue, 25 Oct 2011 13:46:04 -0600
    ...That's why you need to wait 24 hours before measuring the "state of charge." My UB12220s will hang up at 13 for a...
  • Re: Battery Woes/Choice
    Historical mailing list - Jeffrey Vickers
    Mon, 9 Jun 2008 15:20:11 -0700
    ...State_of_Charge > > and from there you'll find links to other possibly useful sites > which write about how to determine battery state of...
  • Re: Understanding Amp Hours
    Historical mailing list - Dennis Haynes
    Tue, 20 Jun 2006 13:35:41 -0400
    ...To use a voltmeter to determine a battieries state of charge, the measurement needs to be done open circuit, or "0" load. A battery...
  • Re: Optima Batteries
    Historical mailing list - David Beierl
    Thu, 23 Mar 2000 11:35:10 -0500
    ...Also note that interpreting state of charge in a lead-acid battery by voltage is quite tricky. For accurate results, the battery must have...
  • Re: Batteries don't die, they get murdered
    Historical mailing list - Richard A Jones
    Wed, 14 Feb 2007 14:27:15 -0700
    ...The voltage while driving is being governed by the voltage regulator and doesn't represent the state of charge of the battery. A fully...
  • Fwd: Car Battery FAQ
    Historical mailing list
    Wed, 28 Jun 1995 20:23:32 -0400
    ...Using the following table, determine the battery's >state-of-charge. The BEST way to measure the state-of-charge is to check >the...
  • Battery FAQ ...
    Historical mailing list - Joel Walker
    Sun, 14 Apr 96 23:04:13 CDT
    ...Using the following table, determine the battery's state-of-charge. The BEST way to measure the state-of-charge is to check the...
  • Re: Why AGM batts don't last as long as they should
    Historical mailing list - Keith Ovregaard
    Wed, 25 Jun 2008 16:32:26 -0700
    ...My LED panel under the stove also showed a low state of charge. I put the smart charger on it and it came back...
  • Re: Batteries in parallel?
    Historical mailing list - David Beierl
    Mon, 29 Jul 2002 21:51:35 -0400
    ...least if you are instrumented to be able to determine state-of-charge without having to let the battery sit 24 hours and then...
  • Re: Understanding Amp Hours
    Historical mailing list - jon
    Thu, 22 Jun 2006 09:25:51 -0700
    ...Many *good* state-of-charge (amp-hour) meters will take into account the above fact. Look for meters that are meant for alternative energy...
  • Re: House Battery Low Voltage Cut-out switch
    Historical mailing list - Dennis Haynes
    Sun, 9 Apr 2006 07:34:38 -0400
    ...At best, you may get 3 hours and then you will need to drive at least that long to get the state of charge...
  • Re: Van Upgrade idea your thoughts?
    Historical mailing list - Jim Arnott
    Thu, 31 Dec 2020 19:49:31 -0800
    ...I particularly like that 1.) it allows charging multiple devices 2.) the voltmeter allows me too monitor the state of charge of my house...
  • solenoid trouble?
    Historical mailing list - Linda J. Bartnik
    06 Mar 96 18:20:07 EST
    ...What I wanna know is if my battery's low state of charge could have had a major part in this problem. I'd...
  • Re: Batteries don't die, they get murdered
    Historical mailing list - Dennis Haynes
    Wed, 14 Feb 2007 20:52:20 -0500
    ...The voltage while driving is being governed by the voltage regulator and doesn't represent the state of charge of the battery. A fully...
  • Re: Auxilliary batteries
    Historical mailing list - David Beierl
    Mon, 14 Mar 2011 23:19:40 -0400
    ...regulator, use flooded-cell batteries and keep track of your state of charge with a hydrometer if you can't afford an integrating consumption...
  • Re: Solar panels for your Vanagon..
    Historical mailing list - Matt Roberds
    Tue, 19 Jun 2007 03:56:23 -0500
    ...Car starting batteries really don't like being cycled below maybe 75% or so state-of-charge. The Syncro White Star version is to...
  • Re: Vitrifrigo trip results, wiring, battery life, charging issues, etc
    Historical mailing list - David Beierl
    Wed, 5 Aug 2009 22:24:58 -0400
    ...So let's say that at its current state of charge your battery will accept 60 amps at 14 volts but only 20 amps...
  • Re: Battery testing solution
    Historical mailing list - Tom Hargrave
    Sun, 14 Aug 2011 11:52:07 -0500
    The resting voltage will tell you the state of charge but you need to know the battery chemistry to translate. That's why the...
  • Re: Wheelchair Batteries vs GW Aux Battery
    Historical mailing list - Dan Winget
    Thu, 6 Jul 2017 08:57:27 -0400
    ...Most consider a lead acid battery to be cycled anytime you go below 50% state of charge and/or going above 80% such as...
  • Re: Sportsmobile
    Historical mailing list
    Mon, 13 Feb 1995 13:49:51 CDT
    ...a disaster - NEVER could keep the batteries in a similar state of charge, and one or the other was always overflowing acid. :( The new...
  • Re: OXS & Batt. Lights just came on
    Historical mailing list - jimt
    Thu, 25 Nov 2004 17:10:18 -0700
    ...Make sure it is at least 12.5v or higher (depending on temperature, type of battery, and current state of charge.) if below that...
  • Car Battery FAQ 2.0
    Historical mailing list
    Mon, 16 Sep 1996 20:31:04 -0300 (ADT)
    ...STATE-OF-CHARGE TEST > >Using the following table, determine the battery's state-of-charge: > > Open Circuit Approximate Average Cell > Battery Voltage State-of...
  • F.Y.I. - regulating chargin
    Historical mailing list - Harvey Chao
    24 May 1996 09:57:25 -0700
    ...Automotive chargint circuits apply a constant voltage to the battery and allow the current to vary with the state of charge of the battery...
  • Re: Fridge- last problem before our trip.
    Historical mailing list - David Beierl
    Fri, 5 Jul 2013 20:30:20 -0400
    ...The three lights are an attempt to give some vague idea of battery state of charge, but it's to some extent doomed because...
  • Re: Van Upgrade idea your thoughts?
    Historical mailing list - Eric Caron
    Thu, 31 Dec 2020 23:11:08 -0500
    ...I particularly like that 1.) it allows charging multiple devices 2.) the voltmeter allows me too monitor the state of charge of my house...
  • Re: 12V fridge necessary?
    Historical mailing list - Dennis Haynes
    Tue, 14 Mar 2006 20:03:42 -0500
    ...Using a constant-voltage regulated charging system such as a vehicle alternator, you will rarely get the battery over 85% state of charge. If...
  • Battery Myths-including deep cycles
    Historical mailing list - Dennis Haynes
    Thu, 22 Feb 2007 14:32:14 +0000
    ...Ideally, you want to operate the battery from 50-80% state of charge with the periodic full and maintenance cycles. Battery combiners offer the...
  • What I Learned from Trojan Battery's tech support guy
    Historical mailing list - Rocket J Squirrel
    Sat, 29 Oct 2011 07:37:15 -0700
    ...by checking the voltage and gravity and comparing to the state of charge table. Then I would check the battery after 4-6 wks...
  • Re: About them Norcold refrigerators
    Historical mailing list - Otmar
    Tue, 12 Jul 2005 17:19:25 -0700
    ...get back? That depends on the alternator, batteries and the state of charge. As long as the battery is under 85% full, you can...
  • Re: alternator--voltage vs amps
    Historical mailing list - David Beierl
    Wed, 12 Nov 2008 23:25:03 -0500
    ...resistance, if you will) at a given temperature, voltage and state of charge. A three-stage "smart" regulator will use the full output of...
  • Re: Vanagon won't start !
    Historical mailing list - Joe L.
    Tue, 11 Jul 2000 21:19:57 -0400
    ...What state of charge was the battery in when you started the recharge? Unless you can point to an event that discharged your battery...
  • Aux Battery: cabin light wiring
    Historical mailing list - Lawrence Johnson
    Sun, 01 Dec 1996 18:10:10 -0800
    ...The camper > circuits > only run the fridge on 12V, the annuciator panel that tells you the state of > charge and water level etc., and...
  • Re: Test equipment--"Official VW multimeter"
    Historical mailing list - Derek Drew
    Tue, 28 Sep 1999 20:59:43 -0700
    ...More accuracy is especially helpful in measuring the state of charge of your batteries, among other things. Now Fluke manufactures a special version of...
  • Re: Golf Cart Batteries
    Historical mailing list - Dennis Haynes
    Sun, 29 Oct 2006 10:10:22 -0500
    ...The current absorbed by the battery will be determined by the state of charge, charge acceptance, and suitability of the wiring and relays between...
  • Re: Dual-Battery Question
    Historical mailing list - Chuck Ochs
    Mon, 7 Jun 2004 16:15:28 -0400
    ...A fuse would likely blow right off if the two batteries are not nearly equal in their state of charge when they are hooked...
  • Re: How do you tell how much juice a battery has/?
    Historical mailing list - Erik Lundberg
    Tue, 26 Jan 2010 14:56:01 -0800
    ...It additionally has a great voltage to state of charge chart that I keep handy in the van. http://www.ccis.com/home/mnemeth...
  • Re: Run time to charge Aux battery
    Historical mailing list - Dennis Haynes
    Sat, 5 Sep 2009 10:17:05 -0400
    ...On a fixed voltage system, as the battery state of charge increases the current return will drop. Battery charging is not a linear (amp...