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<div>With new batteries, I don't do a full discharge. Yes, it takes around a day for the charger to be done. Igbi need it recharged quicker, I could turn on the oem one. I mostly use it to mow grass now. For snow I have a big loader backhoe with a heated cab. </div><div><br></div><div><br></div><div><br></div><div id="composer_signature"><div style="font-size:88%;color:#364f67" dir="auto">Sent from my Verizon 4G LTE smartphone</div></div><br><br>-------- Original message --------<br>From: David Roden <etpost@drmm.net> <br>Date: 5/19/17 1:55 AM (GMT-05:00) <br>To: elec-trak@cosmos.phy.tufts.edu <br>Subject: Re: (ET) E-15,
need a smart battery charger guidance & recommendations <br><br>On 18 May 2017 at 23:49, David Tiefenbrunn wrote:<br><br>> I saw on the other thread, I should get a model that hits harder for<br>> the charging ...<br><br>Agreed; the Soneil 3610SRF seems pretty small for this use. If I'm reading <br>the Soneil website right, it charges at only 4.5 amps.<br><br>I take it you don't have to use the tractor very often? At that rate, the <br>charging time from all the way flat would be rather long. Just the bulk <br>phase (0% to 80%) would take about a full day (24h).<br><br>> I'd need some circuit to monitor that all 3 pairs are in the same<br>> state of charge to avoid damage if one charger failed. <br><br>An easy way to do this would be to buy 3 of those cheap bar-graph voltmeters <br>I see in varioius places online (typically $3-10 each) and put them side by <br>side, maybe with their long axes set vertically, on the instrument panel. <br>If you see one dipping way bekiw the others, you know something's wrong. <br>(Be sure to fuse them.)<br><br>I did something similar years ago with analog edgewise panel meters. The <br>bargraph displays would be better, because they're more visible.<br><br>Another method, maybe even cheaper and certainly easier to mount, would be <br>to configure 3 LEDs (any color), one for each 12v pair or battery, with a <br>series zener diode and resistor so they're just on at 10.5 volts. Even <br>better, make 6 to monitor every single golf car battery. Human eyes are <br>pretty good at seeing differences in brightness. If you see one LED go out <br>on acceleration, or even get appreciably dimemr than the others, you know <br>you should stop and investigate.<br><br><br>David Roden - Akron, Ohio, USA<br><br>= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = <br>Note: mail sent to the "etpost" address will not reach me. To send <br>me a private message, please use the address shown at the bottom<br>of this page : http://www.evdl.org/help/<br>= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =<br><br><br><br><br>_______________________________________________<br>Elec-trak mailing list<br>Elec-trak@cosmos.phy.tufts.edu<br>https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak<br></body></html>