Seems the strategy people use who really want high draw power is to use a Jackery or the like which has it's own battery and inverter. Those trickle charge off the 12 volt but then can put out however many watts you need depending on the model. People run fridges / laptops off of them. Bonus is you get a portable high power battery and they are made to take solar as input as well.
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Is there power in the Model Y?
- Thread starter EVchiq
- Start date
Traditionally automobile 12V systems have fuses. The Tesla Model Y uses intelligent circuit breakers that will automatically shut off power to a 12V circuit if an overload is detected. After a short time the Tesla vehicle will attempt to reconnect power to the overloaded circuit.
The Tesla Model Y has two 12V accessory outlets (one in the center console underneath the armrest, the second in the trunk hatch area by the seat release buttons.) The 12V accessory outlets support a maximum of 12A continuous, 16A peak output.
The aftermarket 120V power inverter detected too much voltage and shut down. As noted this may be due to the latest Tesla Model Y using a lithium 12V battery that has a measured voltage of ~15.5V. Typical automotive 12V systems operate between approximately 12.5V and 15V.
Per the online, latest version Tesla Model Y Owner's Manual - "For vehicles manufactured after approximately November 2021, power inverters plugged into the low voltage power socket must support 16V DC input to function."
Model Y Owner's Manual | Tesla
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I hope those Jackery type of batteries can be charged using this 16v DC source. Otherwise, this is going to be a problem!
Johnny Vector
Member
The Jackery 300, to pick a specific example says its DC input is "12V-30V (90W Max)". So it should be fine. Worth checking the device specs before you buy one!
Though I have to say, cutting out at 15.8 V is pretty silly, unless the inverter is using 16 V capacitors or something. I guess that saves a few pennies over 35 V caps, but seems a lot less useful considering even a 12 V system sometimes gets up to 15 V while charging.
The Tesla Model Y will shut off power to the 12V accessory outlets when you exit the vehicle unless you enable Camp mode. When the Tesla vehicle is powered on the power conversion system (PCS) provides up to 2kW power for 12V systems drawing power from the high voltage battery. The 12V battery does not have the capacity to run the majority of the 12V systems or the 12V accessory outlets. The 12V battery only powers up the computers and maintains minimal 12V systems such as door locks, BT and the LTE modem when the Tesla vehicle is parked.
thank you for the clarification.
how about the usb-c ports, do these draw juice from EV battery pack or the regular battery?
(my macbook seems to charge directly from the usb-c, so hoping to use these without draining regular 12v battery)
You won't drain the 12V battery this way; the APC is always powering the 12V accessory outlets and the USB ports whenever the Tesla Model Y is powered on.
Midnightsun
Active Member
Per the Tesla Model Y Owner's Manual under the heading Low Voltage Power Socket:
The power socket is suitable for accessories requiring up to 12A continuous draw (16A peak).
For vehicles manufactured after approximately November 2021, power inverters plugged into the low voltage power socket must support 16V DC input to function.
Midnightsun
Active Member
Electronically resetting breaker is 15a so I see no problem running up to that for a few hours. They may have down rated to 12a same as they do the 120v main battery charger to 12a on a home circuit as this would be a constant load. Cannot see that happening on a 12v socket device though so I would still call it 15a capable. Even a small fridge just kicks the compressor on momentarily to a peak and then settles down a few seconds later. I have run one of these for quite some time on the socket with no issues. Remember, unless the car is on, this circuit is dead so constant load is pretty hard to achieve unless you do some serious driving/long trips.
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It's amazing the answers to questions you can find in the OM!
