<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
Steve,<br>
<br>
yes, that's typical for many (most?) EVs. It's cheap to implement,
only needs a bit of software. Even the Twizy does it, just not with
the initial charger firmware.<br>
<br>
To avoid the "idling" alert, don't set the awake state during
charges. "Awake" represents the vehicle being switched on, not
automatic activity.<br>
<br>
Also, if distinguishable, you should only set "charging12v" in that
case, as "charging" is meant for the main battery.<br>
<br>
Regarding the warning, the 12V maintenance charges will also use
some energy from the main battery. Not much, but users should be
aware of this.<br>
<br>
Regards,<br>
Michael<br>
<br>
<br>
<div class="moz-cite-prefix">Am 16.01.21 um 13:13 schrieb Steve
Davies:<br>
</div>
<blockquote type="cite"
cite="mid:CABFTEGVrcvf09spsQByJ3btYXh7SnK9_d-1t=PBqUEubTgHXCA@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">Hi,
<div><br>
</div>
<div>Do other vehicle types also do this?</div>
<div><br>
</div>
<div>My car was locked and parked since yesterday about 10:30
UTC. Not connected to the EVSE/charger.</div>
<div><br>
</div>
<div>I was monitoring and I noticed that by itself it turned on
the dc/dc and started a 12v battery charge</div>
<div><br>
</div>
<div>The battery was 12.6V at the time and it charged it for an
hour and then went back to sleep.</div>
<div>Battery was bumped up to 13.2V.</div>
<div><br>
</div>
<div><font face="monospace">2021-01-16T09:25:21+0000
ovms/CAA5060/event vehicle.awake<br>
2021-01-16T09:25:24+0000 ovms/CAA5060/event vehicle.locked<br>
2021-01-16T09:25:24+0000 ovms/CAA5060/event
vehicle.charge.state<br>
2021-01-16T09:25:24+0000 ovms/CAA5060/event
vehicle.charge.12v.start<br>
</font></div>
<div><font face="monospace">...</font></div>
<div><font face="monospace">2021-01-16T09:26:42+0000
ovms/CAA5060/metric/v/b/12v/current -9.52<br>
2021-01-16T09:26:42+0000 ovms/CAA5060/metric/v/b/12v/voltage
14.72<br>
</font></div>
<div><span style="font-family:monospace">2021-01-16T09:26:42+0000
ovms/CAA5060/metric/v/e/charging12v yes</span><br>
</div>
<div><font face="monospace">...</font></div>
<div><font face="monospace">2021-01-16T09:40:20+0000
ovms/CAA5060/notify/alert/vehicle.idle Vehicle is idling /
stopped turned on<br>
2021-01-16T09:40:20+0000 ovms/CAA5060/event
notify.alert.vehicle.idle<br>
</font></div>
<div><font face="monospace">...</font></div>
<div><font face="monospace">2021-01-16T10:25:33+0000
ovms/CAA5060/event vehicle.charge.12v.stop<br>
...</font></div>
<div><br>
</div>
<div>Chart in localtime (+0200):</div>
<div><br>
</div>
<div><img src="cid:part1.594551E1.7A1E6FDD@expeedo.de"
alt="image.png" style="margin-right: 0px;" class=""
width="507" height="253"><br>
</div>
<div><br>
</div>
<div>I did wonder if this would trigger the car warning "Battery
discharging while stopped" but it did not.</div>
<div><br>
</div>
<div>So if the car manages the 12v battery I will adjust the
warning in my docs about discharging the 12v battery by
leaving the OVMS connected.</div>
<div><br>
</div>
<div>Steve</div>
<br>
</div>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26</pre>
</body>
</html>