DC port in rear of the Gravity

9point81

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26 Gravity GT Black, EV9
Where does that port draw power from? The 12v battery or the main EV battery?
 
Where does that port draw power from? The 12v battery or the main EV battery?
Do you mean the charge port? That can connect directly to the EV battery. But for vehicle to grid the "wunderbox" converts the DC battery voltage to AC and outputs out the charge port.
Or do you mean the AC outlets, I think those are also powered from the "wunderbox" which is connected to the EV battery.
I recall that the Gravity generates 12V all the time from the main battery so the 12V battery is for emergencies only (to power the brakes, lights, steering in case of main battery failure). I might be confusing it with a different EV...
 
Do you mean the charge port? That can connect directly to the EV battery. But for vehicle to grid the "wunderbox" converts the DC battery voltage to AC and outputs out the charge port.
Or do you mean the AC outlets, I think those are also powered from the "wunderbox" which is connected to the EV battery.
I recall that the Gravity generates 12V all the time from the main battery so the 12V battery is for emergencies only (to power the brakes, lights, steering in case of main battery failure). I might be confusing it with a different EV...
I don't have the power package, so no AC outlets. I do have the DC accessory outlet in the back of the trunk area (we all do) and that's what I'm looking for. You answered my question tho that all the power comes from the EV battery, thanks!
 
If I were designing the electrical system, I'd have a charger for the 12v battery that drew off the EV's high voltage battery pack, and I'd have the 12v power supplied by a circuit off the 12v battery system. That would provide the benefits of ensuring the 12v battery is always topped off, and avoid the need for a dedicated dc/dc power converter for the 12v power port. Whether that's actually how the Gravity is engineered, I have no idea.
 
I don't have the power package, so no AC outlets. I do have the DC accessory outlet in the back of the trunk area (we all do) and that's what I'm looking for. You answered my question tho that all the power comes from the EV battery, thanks!
In the old days, engineers thought it's a good idea to skip the cost and inconvenience of a 12V battery when they could easily access the power directly from the main/high-voltage battery.

It was a costly mistake. There was only 1 battery at that time: expensive high-voltage, not a cheap 12V battery. When that only battery died, there's no other backup system.

EVs now have both separate high-voltage and 12V batteries. The 12V battery serves as sacrificing one if it has to die first in order to keep the expensive high-voltage dormant. It's cheap to replace a 12V battery while it was very expensive to replace the only one battery that was the high-voltage one.

Thus, your DC port in the trunk gets its power from a 12V battery. There are 2 12V batteries in a Lucid. Those 12V batteries gets the power from the main/high-voltage battery.
 
In the old days, engineers thought it's a good idea to skip the cost and inconvenience of a 12V battery when they could easily access the power directly from the main/high-voltage battery.

It was a costly mistake. There was only 1 battery at that time: expensive high-voltage, not a cheap 12V battery. When that only battery died, there's no other backup system.

EVs now have both separate high-voltage and 12V batteries. The 12V battery serves as sacrificing one if it has to die first in order to keep the expensive high-voltage dormant. It's cheap to replace a 12V battery while it was very expensive to replace the only one battery that was the high-voltage one.

Thus, your DC port in the trunk gets its power from a 12V battery. There are 2 12V batteries in a Lucid. Those 12V batteries gets the power from the main/high-voltage battery.
So we have a portable fridge that we plug in our AC outlet in our EV9 for road trips and the power for those outlets come from the battery in that car. No ac outlets in my Gravity, so we have the DC adapter which came with the fridge that we can use, and I just want to make sure we don't cause problems by running it off that port and the 12v battery for our big 11 hour trips.
 
So we have a portable fridge that we plug in our AC outlet in our EV9 for road trips and the power for those outlets come from the battery in that car. No ac outlets in my Gravity, so we have the DC adapter which came with the fridge that we can use, and I just want to make sure we don't cause problems by running it off that port and the 12v battery for our big 11 hour trips.
No problem by using your DC port in the trunk with the above scenarios.
 
If I were designing it I’d have a small dc dc to generate low power 12v for the always on stuff and leave the 12v battery for emergencies. I swear I remember seeing that some EV was doing it this way.
Tesla has killed a ton of 12V batteries by cycling them while the car is parked. It has improved dramatically since they reduced vampire drain and raised the threshold for when it wakes up to charge it.
 
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So we have a portable fridge that we plug in our AC outlet in our EV9 for road trips and the power for those outlets come from the battery in that car. No ac outlets in my Gravity, so we have the DC adapter which came with the fridge that we can use, and I just want to make sure we don't cause problems by running it off that port and the 12v battery for our big 11 hour trips.
Been contemplating buying one myself. Mind telling us the brand and model?
 
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