What does the LEAF do at the 50-minute mark if the 12v battery has been disconnected for charging?
Probably nothing, since most of the control electronics ...
has no 12v power, so it cannot time the 50 minutes?
Only caution is that it may charge, even when the car is off and all the requirements met to remove the battery. So, does that mean the 12 volt lead is "hot" from the DC/DC converter at the post hour mark from "Off", while the traction battery is trying to charge the missing battery?garygid wrote:No caution (IMO) about leaving the 12v battery disconnected for a "longer" time.
Yep. Once you've removed the battery (between 5 min and 60 min after having turned the car on/off and not opening any doors) you don't need to worry about hooking the battery back up within an hour.garygid wrote:Once the 12v power is removed, and stored charge (on capacitors)
is gone, it is unlikely that the car can come "alive" enough to be able
to operate the DC-to-DC converter.
So, I suspect that a certain minimum voltage on the "12v buss"
is required for the LEAF to do anything, even try to charge the 12v battery.
garygid wrote:The 12v battery is only "charged" when the LEAF is ON. Then the high-voltage (300 to 500 volt?) DC to 12 volt (nominal) DC converter might be capable of supplying 100 amps (or so).
However, that would be "using the LEAF's (main) battery" as a "power source", which is listed by Nissan as a "prohibited" (or "not covered"?) use.
When the Leaf is ON, DC-DC converter is always on and supplying 13.5V or Turn on only when 12V battery is low?garygid wrote:The 12v battery is only "charged" when the LEAF is ON. Then the high-voltage (300 to 500 volt?) DC to 12 volt (nominal) DC converter might be capable of supplying 100 amps (or so).
However, that would be "using the LEAF's (main) battery" as a "power source", which is listed by Nissan as a "prohibited" (or "not covered"?) use.
Automatic charge control does not start until approximately one hour after car is turn OFF, per the note from the Nissan Service Manual posted several posts up.ht2 wrote:When the Leaf is ON, DC-DC converter is always on and supplying 13.5V or Turn on only when 12V battery is low?garygid wrote:The 12v battery is only "charged" when the LEAF is ON. Then the high-voltage (300 to 500 volt?) DC to 12 volt (nominal) DC converter might be capable of supplying 100 amps (or so).
However, that would be "using the LEAF's (main) battery" as a "power source", which is listed by Nissan as a "prohibited" (or "not covered"?) use.
Yes, when the LEAF is on it will always supply ~13.5v to make sure the 12v battery is charged.ht2 wrote:When the Leaf is ON, DC-DC converter is always on and supplying 13.5V or Turn on only when 12V battery is low?