<html><head></head><body><div class="ydpa309f569yahoo-style-wrap" style="font-family:Arial, Helvetica, sans-serif;font-size:16px;"><div><div dir="ltr" data-setdir="false">Ford, for one, does this. They have a current sensor in the negative cable and the computer integrates the current in and out and computes the net battery charge. When using an external charger it is important to connect the negative to the engine block so as not to bypass the current sensor so the computer can monitor the charge current and reflect the charger's current in the battery charge calculations.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">I expect there are others that do the same.<br></div><div><br></div><div class="ydpa309f569signature"><div style="color: black; font-style: normal; font-weight: normal; font-stretch: normal; font-size: 12pt; line-height: normal; font-family: Arial, Helvetica, sans-serif; font-size-adjust: none;"><div style="color: black; font-style: normal; font-weight: normal; font-stretch: normal; font-size: 12pt; line-height: normal; font-family: Arial, Helvetica, sans-serif; font-size-adjust: none;"><div><font size="4">Dave <br></font></div><div><span style="font-size:10.0pt;font-family:sans-serif;color:black;"><br></span></div><br></div></div></div></div>
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On Saturday, January 13, 2024 at 04:39:57 AM CST, Moose <eric@megageek.com> wrote:
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<div><div id="ydpca218da2yiv2089004506"><div><font size="2" face="sans-serif">One more note of stupidity on this topic.
Modern Range Rover requires their computer to change a battery!</font>
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<br clear="none"><font size="2" face="sans-serif">That's right, you need to tell their
computer there is a new battery.</font>
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<br clear="none"><font size="2" face="sans-serif">I'm not sure if other makes are going
this way, but it is one item on the long list of reasons I'll never own
another RR!</font>
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<br clear="none"><font size="2" face="sans-serif">Moose</font>
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<div id="ydpca218da2yiv2089004506yqtfd12900" class="ydpca218da2yiv2089004506yqt8583726455"><br clear="none"><font size="1" face="sans-serif" color="#5f5f5f">From:
</font><font size="1" face="sans-serif">Dwade Reinsch <dreinsch@swbell.net></font>
<br clear="none"><font size="1" face="sans-serif" color="#5f5f5f">To:
</font><font size="1" face="sans-serif">David Scheidt <dmscheidt@gmail.com>,
old dirtbeard <dirtbeard@gmail.com></font>
<br clear="none"><font size="1" face="sans-serif" color="#5f5f5f">Cc:
</font><font size="1" face="sans-serif">"shop-talk@autox.team.net"
<shop-talk@autox.team.net></font>
<br clear="none"><font size="1" face="sans-serif" color="#5f5f5f">Date:
</font><font size="1" face="sans-serif">01/12/2024 23:12</font>
<br clear="none"><font size="1" face="sans-serif" color="#5f5f5f">Subject:
</font><font size="1" face="sans-serif">Re: [Shop-talk]
Stranded by a bad car battery.</font>
<br clear="none"><font size="1" face="sans-serif" color="#5f5f5f">Sent by:
</font><font size="1" face="sans-serif">"Shop-talk"
<shop-talk-bounces@autox.team.net></font>
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<br clear="none"><font size="2" face="Arial">Thanks to all who added to my knowledge base
for modern cars and batteries.</font>
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<br clear="none"><font size="2" face="Arial">I replaced the old battery the next morning,
started right up, and continues to run perfectly. I guess I'll just
have to have battery tested after about three years of use.</font>
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<br clear="none"><font size="2" face="Arial">Thanks again!!</font>
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<br clear="none"><font size="2" face="Arial">Dwade</font>
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<br clear="none"><font size="2" face="Arial" color="#2f2f2f">On Wednesday, January 10, 2024
at 04:10:50 PM CST, old dirtbeard <dirtbeard@gmail.com> wrote: </font>
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<br clear="none"><font size="2" face="Arial" color="#2f2f2f">Hi David, </font>
<br clear="none">
<br clear="none"><font size="2" face="Arial" color="#2f2f2f">Yes, I do understand about
the lead acid chargers. I have accumulated many over the last 50 years.
🙂</font>
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<br clear="none"><font size="2" face="Arial" color="#2f2f2f">Best,</font>
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<br clear="none"><font size="2" face="Arial" color="#2f2f2f">Doug</font>
<br clear="none"><font size="2" face="Arial" color="#2f2f2f">mobile</font>
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<br clear="none"><font size="2" face="Calibri"><b>From:</b> Shop-talk <shop-talk-bounces@autox.team.net>
on behalf of David Scheidt <dmscheidt@gmail.com><b><br clear="none">
Sent:</b> Wednesday, January 10, 2024 9:17:13 AM<b><br clear="none">
To:</b> Dwade Reinsch <dreinsch@swbell.net><b><br clear="none">
Cc:</b> shop-talk@autox.team.net <shop-talk@autox.team.net><b><br clear="none">
Subject:</b> Re: [Shop-talk] Stranded by a bad car battery.</font><font size="2" face="Arial" color="#2f2f2f">
</font>
<br clear="none"><font size="2" face="Arial" color="#2f2f2f"> </font>
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<br clear="none"><font size="2" face="Arial" color="#2f2f2f">On Jan 10, 2024, at 00:48,
Dwade Reinsch <dreinsch@swbell.net> wrote:<br clear="none">
</font>
<br clear="none"><font size="2" face="Arial" color="#2f2f2f"> </font>
<br clear="none"><font size="2" face="Arial" color="#2f2f2f">This afternoon I was sitting
in the 2016 Honda Odyssey van waiting for granddaughter to finish a theater
activity and I went to sleep in the front seat. Had the radio and
inside lights on. When she finished and came out, car would not start.
Completely dead. Electric seat would not come back to driving
position, etc.</font>
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<br clear="none"><font size="2" face="Arial" color="#2f2f2f">Here's the question: In
the old days a weak battery would give notice by cranking slowly, etc.,
before failing. This is the car I drive regularly and it gave NO
warning. Luckily, I could call son-in-law and he came to help. Would
not start with good set of booster cables. Would not start with 15
minutes of charging on cables before attempting to start. So in the
morning I'll take pickup and tools and pull battery, get a replacement,
and move the van home.</font>
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<br clear="none"><font size="2" face="Arial" color="#2f2f2f">Does anyone have a suggestion
for identifying a failing battery before being stranded? (Battery
is about 4 years old.)</font>
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<br clear="none"><font size="2" face="Arial" color="#2f2f2f">If used properly, the conductance
testers work well. Not cheap, but every auto parts store will test
for you, assuming your battery is accessible. Many cars, starting
just a bit later than your ofdesy, have state of charge and battery performance
information tracked by the computer. (OnStar sent me email telling
me the battery is low when I left my car on to listen to the ballgame at
a campsite. I also get a monthly email, which told me to replace the battery
for a couple months before I actually had it replaced.)</font>
<br clear="none">
<br clear="none"><font size="2" face="Arial" color="#2f2f2f">Modern cars have much higher
loads at start time, and lots of them require a reasonably good voltage
to turn the computer on. Without that, the car won’t do anything
(the computer controls the starter solenoid on most cars). The various
computers also control all the other parts, which is why the seat couldn’t
move. </font>
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<br clear="none"><font size="2" face="Arial" color="#2f2f2f">This fall, I drove my wife’s
fusion to the garage to do the brakes. I turned off and on a couple times
to get it spotted in the right spot. The third time I tried to start it,
battery was dead. 20 seconds earlier, it fired on instantly, with no slow
cranking. Since I was in the garage, I had a battery charger handy.
10.2 volts or something like that. Putting the charger on lowest setting
let it start. Plenty of joules in the battery, just not enough voltage
to turn the ecm on. (I replaced the battery before pulling it out of the
garage, it was 4 or 5 years old.)</font>
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