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On 12/01/2023 7:21 AM EST you wrote:
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>I think someone is pulling someone else's leg. There is
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>nothing (that I know of) in any post-2000 vehicle that can be
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>"fried" by providing or accepting a jump, provide it's done
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>properly (+ to + and - to -).
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Donald,
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Thanks for the reply. I agree with you, but I haven't stayed up with the "state of the art" when it comes to the newer cars. My newest car is a '12 Scion xB. Everything gets older from there. I'd never heard of electric parking brakes until my nephew had problems with his. So I had to come up to speed there. So that's why I posted the questions.
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>The "dead" battery does not appear as a short because the
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>cables and clamps have significant resistance. That is the
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>big reason that the "dead" battery needs to be connected
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>for a period of time before cranking. (I usually wait 30 sec
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>(longer in winter); not very long, but it really doesn't take
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>much to bring a dead battery up to sufficient charge.)
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Exactly!!!
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>The protections on vehicle electronics and electrical
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>systems are amazing; I've helped design and test quite a
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>few of them.
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Again, exactly what I thought. How hard is it to put a fuse, a MOV, and or a diode in each circuit to protect it from surges and incorrect polarity.
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>Protection is built in to every component against: over-
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>voltage; reverse connection; shorts to ground; shorts to
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>power. The battery itself is a very simple electrochemical
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>device that _can_ be damaged, but it's difficult: freezing
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>(-40F if charged; -20F if significantly discharged); reverse
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>charging; mechanical damage is the most common
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>problem.
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Good info.
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>Provided the jumper and jumpee batteries are connect
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>properly (+ to + and - to -), there is almost no way to
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>damage either of the vehicles' systems.
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My thoughts exactly. Otherwise you'd have to remove a dead battery to charge it.
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Thanks for the info. That reinforces my thoughts exactly. I just wanted some addition support.
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JohnT,
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<p class="default-style"><span style="font-family: tahoma, arial, helvetica, sans-serif;">John T. Blair WA4OHZ email: jblair1948@cox.net</span></p>
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Va. Beach, Va Phone: (757) 495-8229
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65 Morgan 4/4 Series V (B1106) 75 Bricklin SV1 (#0887) 48 TR1800 48 #4 Midget
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65 & 77 Spitfire 71 Saab Sonett III 65 Rambler Classic 65 Volvo P1800
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Morgan: <a href="http://autox.team.net/morgan/">http://autox.team.net/morgan/</a>
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Bricklin: <a href="http://www.bricklin.org/">http://www.bricklin.org</a>
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<p>If you can read this - Thank a teacher! <br><span style="font-family: tahoma, arial, helvetica, sans-serif;">If you are reading it in English - Thank a Vet!!</span></p>
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<p><span style="font-family: tahoma, arial, helvetica, sans-serif;">From Dennis Prager - The American Trilogy:</span> <br><span style="font-family: tahoma, arial, helvetica, sans-serif;"> e pluribus Unum, "from many, one."</span> <br><span style="font-family: tahoma, arial, helvetica, sans-serif;"> In God We Trust</span> <br><span style="font-family: tahoma, arial, helvetica, sans-serif;"> Liberty - the power of choosing, thinking, and acting for </span> <br><span style="font-family: tahoma, arial, helvetica, sans-serif;"> oneself; freedom from control or restriction </span> <br><br><br></p>
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