<html><head></head><body><div class="ydp1c276b3eyahoo-style-wrap" style="font-family:Arial, Helvetica, sans-serif;font-size:16px;"><div id="ydp1c276b3eyiv1342939598"><div><div style="font-family:Arial, Helvetica, sans-serif;font-size:16px;" class="ydp1c276b3eyiv1342939598ydp8cfc2cf6yahoo-style-wrap"><div><div dir="ltr">Old school chargers are just a transformer and a rectifier. There is nothing to regulate the voltage. Most of the better ones had a timer to limit the charge. </div><div dir="ltr"><br></div><div dir="ltr">The newer, "smart" chargers will not overcharge a battery when working properly. But all bets are off it there is a shorted cell in the battery. </div><div><br clear="none"></div><div class="ydp1c276b3eyiv1342939598ydp8cfc2cf6signature"><div style="color:black;font-style:normal;font-size-adjust:none;font-weight:normal;font-stretch:normal;font-size:12pt;line-height:normal;font-family:Arial, Helvetica, sans-serif;"><div style="color:black;font-style:normal;font-size-adjust:none;font-weight:normal;font-stretch:normal;font-size:12pt;line-height:normal;font-family:Arial, Helvetica, sans-serif;"><div><font size="4">Dave <br clear="none"></font></div><div><span style="font-size:10.0pt;font-family:sans-serif;color:black;"><br clear="none"></span></div><br clear="none"></div></div></div></div>
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On Wednesday, July 8, 2026 at 08:35:00 PM CDT, Al Fuller <alfuller194@gmail.com> wrote:
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<div><div id="ydpe4a54dcdyiv1342939598ydp7678f5afyiv0469047032"><div><div>Yeah, I parted with most of my old-school chargers a while ago. </div><div><br clear="none"></div><div>I guess in a world where I have unlimited time I would research, build and install some smarts on the one remaining dumb charger, but that's in an alternate universe ...</div><div><br clear="none"></div><div>________________<br clear="none">Sent from my phone <br clear="none">Best Regards,<br clear="none">Al Fuller</div></div><br clear="none"><div class="ydpe4a54dcdyiv1342939598ydp7678f5afyiv0469047032gmail_quote ydpe4a54dcdyiv1342939598ydp7678f5afyiv0469047032gmail_quote_container"><div dir="ltr" class="ydpe4a54dcdyiv1342939598ydp7678f5afyiv0469047032gmail_attr">On Sun, Jul 5, 2026, 5:09 PM Bob Spidell <<a shape="rect" href="mailto:bspidell@comcast.net" rel="nofollow" target="_blank">bspidell@comcast.net</a>> wrote:<br clear="none"></div><blockquote style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;" class="ydpe4a54dcdyiv1342939598ydp7678f5afyiv0469047032gmail_quote"><u></u>
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Overcharge caused by overvoltage. The only I know of that causes an
explosion like that is hydrogen gas caused by overcharging along
with a source of ignition. That's why it is now recommended to
ground to the chassis, instead of the neg. terminal, when jump
starting. Note even 'maintenance free' batteries have vents. <br clear="none">
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I ruined a battery on an 'old school trickle' charger; they are
constant current power supplies and will keep pumping electrons even
after the battery if fully charged. The newer smart chargers know
when to stop.<br clear="none">
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bs<br clear="none">
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<div>On 7/3/2026 9:08 PM, Al Fuller wrote:<br clear="none">
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<div>Hard to think of anything better, but where the run off
will go is a consideration.</div>
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<div>I guess it goes without saying that careful PPE
is called for.</div>
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<div>What is causing the batteries to go? Overcharge?
Overvoltage? Short circuit?</div>
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<div>Something as dangerous as multiple batteries
going off calls for some serious investigation and root cause
analysis.</div>
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<div>________________<br clear="none">
Sent from my phone <br clear="none">
Best Regards,<br clear="none">
Al Fuller</div>
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<div dir="ltr" class="ydpe4a54dcdyiv1342939598ydp7678f5afyiv0469047032gmail_attr">On Fri, Jul 3, 2026, 7:49 PM
john niolon <<a shape="rect" href="mailto:jniolon@att.net" rel="nofollow" target="_blank">jniolon@att.net</a>>
wrote:<br clear="none">
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<div><font face="Segoe UI">had my second Walmart Neverstart
battery explode in my generator.....</font></div>
<div> </div>
<div><font face="Segoe UI">what's the best clean up material
for this Soda wash??</font></div>
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<div><font face="Segoe UI">john<img align="baseline" style="width:100%;max-width:800px;" border="0" hspace="0" alt="" src="cid:c0970965-5a4f-4de0-1c65-98b521f70c6a@yahoo.com" data-inlineimagemanipulating="true" class=""></font></div>
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</div>_______________________________________________<br clear="none"><br clear="none"><a shape="rect" href="mailto:Shop-talk@autox.team.net" rel="nofollow" target="_blank">Shop-talk@autox.team.net</a><br clear="none">Donate: <a shape="rect" href="http://www.team.net/donate.html" rel="nofollow" target="_blank">http://www.team.net/donate.html</a><br clear="none">Suggested annual donation $12.96<br clear="none">Archive: <a shape="rect" href="http://www.team.net/pipermail/shop-talk" rel="nofollow" target="_blank">http://www.team.net/pipermail/shop-talk</a> <a shape="rect" href="http://autox.team.net/archive" rel="nofollow" target="_blank">http://autox.team.net/archive</a><br clear="none"><br clear="none">Unsubscribe/Manage: <a shape="rect" href="http://autox.team.net/mailman/options/shop-talk/dave1massey@cs.com" rel="nofollow" target="_blank">http://autox.team.net/mailman/options/shop-talk/dave1massey@cs.com</a><br clear="none"><br clear="none"></div>
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