12v Battery longevity

[Beachbum]

Evening, first post.
Just bought an Explorer EV and now need to leave it for an extended period of time. Does anyone know how long the 12v battery will last before it dies due to inactivity?
Other cars can last anywhere from 2 weeks to a month, but knowing that the 12v battery on the Explorer is so much smaller, wondered if there had been issues with Batteries being left and then just not being useable on peoples return
Already have trickle charger for our other car, do I need one for this one?

[Sax]

hi m8 all i can say is i left mine at an airport for 2 weeks while we was away and it started no problem but i was in the same boat as you and worrying it would be flat .

[Beachbum]

Thanks for the response. So 2 weeks is doable. That works for the holiday approaching, but not the next. I'm think Trickle charger it is, although less of a rush to get one now.

[Beachbum]

An update:
Chatted to Ford Support and got these responses:
1) There isn't a standard time frame as there are many variables that can affect the 12V batteries. However on the Explorer the High voltage battery steps down and supplies charge to the 12V battery if the modules see a depletion.
When I asked for clarification - If the 12v battery starts to get low, the High Voltage battery will recharge it, even if the car is not in use ?
2 )It will to a certain degree yes, but again it depends on HV charge levels when parked up. It will supply a charge but will not act a direct replacement for driving the vehicle and it is dependant on how long the vehicle is left for

Not sure either response clarifies the situation, but it seem to indicate that the HV battery will provide charge to the 12v battery to a limited extent