Solar battery tender for long term parking?

[mbbaumer]

Anyone have a solar panel solution to main sentry while parked at airport for a few weeks?

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[SESHBE]

Anyone have a solar panel solution to main sentry while parked at airport for a few weeks?

https://gosun.co/products/ev-solar-charger-deposit

They are not available yet, but it is probably what you are looking for.

 

[mbbaumer]

Thanks, that looks like a great idea! All I need is just to maintain what I have while parked. I was thinking of something that would sit on dashboard.

 

[Woodrick]

Thanks, that looks like a great idea! All I need is just to maintain what I have while parked. I was thinking of something that would sit on dashboard.

Turn Sentry off, as well as Cabin Overheat as well as third-party apps and it should last for a couple of weeks.

 

[UberNoob]

Just leave it at home plugged in, catch an Uber to the port.

 

[CyberGus]

I feel like this violates Forum Rules on advertising.

 

[No-ICE]

Place a min. 200w flexible RV solar panel on the dash.
Connect to a 48v MPPT controller to the panel.
Connect 48v controller to the 48v battery in the frunk.

Let us know how it work for you.

N.ICE

 

[Woodrick]

Place a min. 200w flexible RV solar panel on the dash.
Connect to a 48v MPPT controller to the panel.
Connect 48v controller to the 48v battery in the frunk.

Let us know how it work for you.

N.ICE

You mean connect it to the circuit that gets turned off?

Tesla doesn't use fuses, they you MOSFETs which generally don't even allow two-way current flow.

And trust me, if a Tesla vehicle sees something that it doesn't like or know about, it WILL turn it off.

Prime example is any of the cars with a cigarette plug. Plug a radar detector or anything in there which stays on all the time. First, as the car starts to go to sleep, it will turn off the plug. Second, once you get back into the car, it knows that something is still plugged in, you have to unplug it before it will apply power.

 

[No-ICE]

The CT frunk has a (+) & (-) terminal points that connect directly to the mid voltage 48v lithium battery. These are the terminals Tesla Service use to jump the 48v battery when it goes dead.

Check the terminals with a Voltmeter to verify the proper voltage to set your MPPT controller too.

N.ICE

 

[CyberTrk]

Anyone have a solar panel solution to main sentry while parked at airport for a few weeks?

Do not run Sentry for a long period of time, this will keep your vehicle running and will not to to sleep, unless the SoC is going below 20%.
- Use a separate dash cam with its own battery instead.

Basically the only thing you can do is to have a solar tender connected to the 48V battery.
This would avoid to have the vehicle to wake up to run the DC High Voltage to DC Low voltage inverter. I assume that the inverter get activated for about one or two hours every two days.

From my experience with my Model 3, the high voltage battery get discharge is about 1% a week,
when not driving, so this might be very similar for the Cybertruck.

https://gosun.co/products/ev-solar-charger-deposit
They are not available yet, but it is probably what you are looking for.

Those solar panels covering all over the car can only be used to charge a separate 48V battery.
Then this 48V battery can be used to run an inverter to get 120V or 240V AC.
This inverter will then be connected to a portable Tesla AC charger using the Tesla charging plug.

The CT frunk has a (+) & (-) terminal points that connect directly to the mid voltage 48v lithium battery. These are the terminals Tesla Service use to jump the 48v battery when it goes dead.

Since the 48V battery is easy to access using the connector mentioned by @No-ICE , what I would recommend is to install a Bluetooth Battery Monitor for your 48V battery. So you will be able to monitor when the vehicle is sleeping or weak up to charge the 48V battery. The following monitor can be connected to a WiFi hotspot, so you could remotely access it.

Victron Energy Smart Battery Sense, Voltage and Temperature Sensor

GL-SFT1200 Secure Travel WiFi Router

DC-DC Converter 48V Step-Down to 5V 2A Buck Converter

Note: The above Amazon links are just for information, I'am not affiliated.

 

[mongo]

The CT frunk has a (+) & (-) terminal points that connect directly to the mid voltage 48v lithium battery. These are the terminals Tesla Service use to jump the 48v battery when it goes dead.

Check the terminals with a Voltmeter to verify the proper voltage to set your MPPT controller too.

N.ICE

Those do not direct connect, at least positive doesn't. It runs to the left vehicle controller node which then boosts it up to 48ish volts when jumping from a 12ish volt vehicle.

If you are using a variable power supply, set the supplied voltage to a value between 12V and 16.5V or between 30V and 50V.

https://www.tesla.com/ownersmanual/cybertruck/en_us/GUID-2C9FAB79-5A7B-40BB-B572-D10CDF7661E6.html

Unclear how it will act if the MV battery isn't depleted.

 

[SESHBE]

Do not run Sentry for a long period of time, this will keep your vehicle running and will not to to sleep, unless the SoC is going below 20%.
- Use a separate dash cam with its own battery instead.

Basically the only thing you can do is to have a solar tender connected to the 48V battery.
This would avoid to have the vehicle to wake up to run the DC High Voltage to DC Low voltage inverter. I assume that the inverter get activated for about one or two hours every two days.

From my experience with my Model 3, the high voltage battery get discharge is about 1% a week,
when not driving, so this might be very similar for the Cybertruck.



Those solar panels covering all over the car can only be used to charge a separate 48V battery.
Then this 48V battery can be used to run an inverter to get 120V or 240V AC.
This inverter will then be connected to a portable Tesla AC charger using the Tesla charging plug.




Since the 48V battery is easy to access using the connector mentioned by @No-ICE , what I would recommend is to install a Bluetooth Battery Monitor for your 48V battery. So you will be able to monitor when the vehicle is sleeping or weak up to charge the 48V battery. The following monitor can be connected to a WiFi hotspot, so you could remotely access it.

Victron Energy Smart Battery Sense, Voltage and Temperature Sensor

GL-SFT1200 Secure Travel WiFi Router

DC-DC Converter 48V Step-Down to 5V 2A Buck Converter

Note: The above Amazon links are just for information, I'am not affiliated.

This has a built in 12V inverter and is only a level 1 charger. Possibly a small battery and charger controller too but not sure though.

 

[Woodrick]

Those do not direct connect, at least positive doesn't. It runs to the left vehicle controller node which then boosts it up to 48ish volts when jumping from a 12ish volt vehicle.

https://www.tesla.com/ownersmanual/cybertruck/en_us/GUID-2C9FAB79-5A7B-40BB-B572-D10CDF7661E6.html

Unclear how it will act if the MV battery isn't depleted.

Yes, if it detects 12V, it will engage a boost inverter. But AFAIK, if it detects 48V, it doesn't.

 

[pricedm]

This has a built in 12V inverter and is only a level 1 charger. Possibly a small battery and charger controller too but not sure though.

That's "cute" but (1) solar panels will blow away in the wind (2) subject to theft.

@tripzero has a very interesting solution; link below. #2 above unfortunately still is a concern.

https://www.cybertruckownersclub.com/forum/threads/diy-range-extender-charging-solution.21071/

 

[SESHBE]

That's "cute" but (1) solar panels will blow away in the wind (2) subject to theft.

@tripzero has a very interesting solution; link below. #2 above unfortunately still is a concern.

https://www.cybertruckownersclub.com/forum/threads/diy-range-extender-charging-solution.21071/

Yes, definitely.
I would only use it camping or if you had to leave the vehicle in a secure location for a long period of time. I definitely would not leave anything like that long term at an airport.

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