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2014 Accord Sport SQ Build keep_hope_alive
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<blockquote data-quote="keep_hope_alive" data-source="post: 8309819" data-attributes="member: 576029"><p>i learned a few things about the charging system behavior today. i finally put a voltmeter in the dash.</p><p></p><p>under normal conditions, the alternator maintains 12.5VDC. even under load of A/C or the sound system the voltage didn't move while the car was driving. so the alternator maintains 12.5V on purpose. however, under braking the voltage would climb to 14V - indicative of regenerative braking. even if the car was simply slowing (i.e. turn off cruise) the voltage would climb - so the PCM uses the alternator as a load to both assist braking and provide regenerative charging.</p><p></p><p>of note - when the headlights are turned on the voltage climbs to 14.4V and stays there.</p><p></p><p>i did not observe any typical ELD behavior during 4 hours of highway driving.</p><p></p><p>i made two videos showing charging behavior</p><p></p><p>[MEDIA=youtube]Fw2i0JWkn4w[/MEDIA]</p></blockquote><p></p>
[QUOTE="keep_hope_alive, post: 8309819, member: 576029"] i learned a few things about the charging system behavior today. i finally put a voltmeter in the dash. under normal conditions, the alternator maintains 12.5VDC. even under load of A/C or the sound system the voltage didn't move while the car was driving. so the alternator maintains 12.5V on purpose. however, under braking the voltage would climb to 14V - indicative of regenerative braking. even if the car was simply slowing (i.e. turn off cruise) the voltage would climb - so the PCM uses the alternator as a load to both assist braking and provide regenerative charging. of note - when the headlights are turned on the voltage climbs to 14.4V and stays there. i did not observe any typical ELD behavior during 4 hours of highway driving. i made two videos showing charging behavior [MEDIA=youtube]Fw2i0JWkn4w[/MEDIA] [/QUOTE]
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