Does the traction battery charge the 12v? is it safe to leave car on the charger for a month?

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From the owner's manual of my 2011 SV (YMMV), red emphasis is mine:

Page EV-4
CHARGING THE 12-VOLT BATTERY
While vehicle is driven

The Li-ion battery charges the 12-volt battery as necessary when the power switch is in the READY to drive position.

While the vehicle is not in use
When the EV (Electric Vehicle) system is off, the 12-volt battery charges automatically for 5 minutes every 5 days.

The charge timing resets to 5 days without charging the 12-volt battery if:
* The vehicle is placed in the READY to drive position for more than 5 minutes.
* The Li-ion battery is charged for more than 5 minutes.
I didn’t know you could make a battery out of lizards..or is it just lizard shaped?
 
Just a note. On my 2021 Leaf, there is a long term storage fuse you can pull. It doesn't come out, you just slide it toward you until it stops. I've been told that it stops all power drain from the batteries. I assume it also disconnects the 12V battery. A friend has repeatedly left his ICE car stored for up to 7 months with the 12V battery disconnected over the winter. In the spring, it always starts right up.

The fuse is inside the compartment at the left end of the dashboard. There's a not-very-good picture of it in my owners manual. It you have trouble finding it, take the car to a dealer and ask them to show you where it is.
 
Just a note. On my 2021 Leaf, there is a long term storage fuse you can pull. It doesn't come out, you just slide it toward you until it stops. I've been told that it stops all power drain from the batteries. I assume it also disconnects the 12V battery. A friend has repeatedly left his ICE car stored for up to 7 months with the 12V battery disconnected over the winter. In the spring, it always starts right up.

The fuse is inside the compartment at the left end of the dashboard. There's a not-very-good picture of it in my owners manual. It you have trouble finding it, take the car to a dealer and ask them to show you where it is.
Might. Might not. The 12v system and the traction system are supposed to be totally separate and if they’re not there is often a problem. This wouldn’t necessarily mean the traction battery never charges the 12v, but a single fuse that does both seems unlikely to me. Im just a hairy eared user though (they’re ACTUALLY HAIRY TOO. There was one on the top edge of my ear that was so long it was interfering with pony tails. I plucked it.) so it doesn’t mean much. If you pull a fuse on the traction battery it’s not going to charge the 12v though. Its circuit is no longer complete.
 
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