21st Century Pony

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Folks,

I love getting stuff for free - free is a great price. However, with the growing use of EVs and the Tesla DC adapter's $230 replacement cost, plus its handy small size and its potential to walk away in vast parking lots especially after dark, I fabricated this locking plate, powder-coated orange, as a theft deterrent.

I had a piece of decent-gauge ELFA steel hanging plate in the basement from a long-ago house project.

I used a Dremel reinforced fiberglass cutting wheel attachment to cut the slots in the ELFA hanging plate's front and to cut away the excess steel, then I used long needlenose pliers to wrap the front steel tongues in onto themselves to provide a locking function once the plate is in its position on the Tesla adapter and the adapter is latched to the car. The empty voids to the left and right of the car's DC latch threshold under the charging cover gave me the idea for the curled-back steel tongues as a securing mechanism.

I also cut box voids into the ELFA plate's raised edges to provide locking anchor points for a small bicycle combination locking strap, available at REI. You can see the yellow bike strap in several pictures... I didn't snug it down as tightly as I intend to when charging at a Tesla Supercharger before I wander off to a grab a bite or to walk the dog, but you should get the idea from the pictures.

There are many ways to do this... the BEST way would have been for Ford / Tesla to design in a locking loop into the adapter's top latch mechanism. Obviously, we are left for now to our DIY efforts...

I at first monkeyed around with a solid aluminum rectangular billet I had laying around to immobilize the adapter's silver latch arm in its locked position, but thick aluminum billets tend to gum up tools etc... hence my eventual shift to thick-gauge steel for this project.

When the steel locking plate is in position and the adapter is locked into the car, they can only be removed (together) by pushing the adapter's now-hidden round silver latch detent into the adapter. The locking plate cannot be pulled back off the adapter, and after I bent it into the general shape of the adapter's top, it also cannot be shifted to the side. It can only be lifted slightly, enough to push the release silver detent.

Hence the yellow bike locking strap... when snugged down, it prevents the locking plate from being lifted enough to use the silver detent. And the side cuts I cut into the locking plate prevent the yellow bike lock strap from being shifted back off the adapter.

Cost, in my design and execution = three Dremel cutting wheels, and $20 to have my local powder coating shop coat the device a very bright color (they chose orange as they had a larger orange job in the works), just for psychological deterrence effect.

I hope this helps people generate ideas out there and keep their Tesla DC adapters from walking away to freedom. There are many ways to fabricate such Tesla adapter locks... this is my version of it.

The attached pics are labeled.

Ford Mustang Mach-E TESLA Adapter + DIY locking plate to keep it secure while plugged in. Tesla adapter - lock plate


Ford Mustang Mach-E TESLA Adapter + DIY locking plate to keep it secure while plugged in. Tesla adapter - lock plate front


Ford Mustang Mach-E TESLA Adapter + DIY locking plate to keep it secure while plugged in. Tesla adapter - lock plate raw material from ELFA


Ford Mustang Mach-E TESLA Adapter + DIY locking plate to keep it secure while plugged in. Tesla adapter - lock plate raw material from ELFA - inner surface


Ford Mustang Mach-E TESLA Adapter + DIY locking plate to keep it secure while plugged in. Tesla adapter and lock plat


Ford Mustang Mach-E TESLA Adapter + DIY locking plate to keep it secure while plugged in. Tesla adapter and lock plate - together


Ford Mustang Mach-E TESLA Adapter + DIY locking plate to keep it secure while plugged in. Tesla adapter and lock plate - in position


Ford Mustang Mach-E TESLA Adapter + DIY locking plate to keep it secure while plugged in. Tesla adapter and lock plate - in position - side vi


Ford Mustang Mach-E TESLA Adapter + DIY locking plate to keep it secure while plugged in. Tesla adapter and lock plate - in position - locked


Ford Mustang Mach-E TESLA Adapter + DIY locking plate to keep it secure while plugged in. Tesla adapter and lock plate - in position - locked with lock mechanism visibl
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RickMachE

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This may invite someone to test it.
 
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21st Century Pony

21st Century Pony

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This may invite someone to test it.
Yes why not? They can and should test it... if it's a bad design and I'm not around, that will force me to improve it. If I turn up, and they are testing it, then... well then it becomes another sort of test, right? All in all, much better IMHO than just leaving the adapter to fend for itself.
 
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21st Century Pony

21st Century Pony

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I would suggest a more inconspicuous approach. Paint everything black for starters.
I thought of that, and also of leaving the plate silver (its original color). After some thought, I realized it's akin to nuclear weapons... no point in having either if its existence is hidden, right? The point is to make the other party think a little bit...
 


RickMachE

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Yes why not? They can and should test it... if it's a bad design and I'm not around, that will force me to improve it. If I turn up, and they are testing it, then... well then it becomes another sort of test, right? All in all, much better IMHO than just leaving the adapter to fend for itself.
Your port can't take a solid test.
 
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21st Century Pony

21st Century Pony

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Your port can't take a solid test.
Neither can the Tesla DC adapter, really. But then that shifts things from opportunity theft to willful damage, and the risk to the aggressor increases significantly.

No lock can defeat a determined professional thief, given enough time and appropriate tools. However, this is a $200+ piece of plastic and some metal, not a bank vault. My orange plate is meant to deter the occasional sticky-hands teenager or drunk or some similar parking lot prowler looking for chump change, and for a maximum of 45 minutes or so..
 
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SWO

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Couldn't you achieve the same with just a heavy duty zip tie that prevents the catch from raising?
 
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21st Century Pony

21st Century Pony

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Couldn't you achieve the same with just a heavy duty zip tie that prevents the catch from raising?
I tried that. It didn't work. The zip tie can be slid back and completely off the adapter because the adapter's cross-section shape is consistent enough down its length to allow that.
 

Aubury

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Has anybody heard of any adapters actually getting stolen? Seems like there’s a lot of angst over what could happen. I like the Alfred E. Newman approach.
I doubt it given how scarce adapters are right now. But I think it's a justifiable angst to have, given these adapters are both scarce and expensive. Since Mach Es have to take 2 charging stations at most supercharger sites, it's not hard to imagine some disgruntled Tesla owner coming along to stop your charging session and stealing the adapter (if they discover you can just take it from a Ford that they stopped charging on). The Tesla designed adapters have an interlock so you can't unplug the supercharger cable while it's plugged in and powered so Tesla obviously thought of that, but Ford just lets anyone come along and end a charging session.

This issue should be something that should be pretty easy for Ford to fix in software, but I wonder if it's even possible to update the module that controls the charge port with OTA. There's a TSB for my 2023 because it continues to run the charging system after the target charge has been met, and they can't just issue an OTA to update the modules to fix it.
 

AKgrampy

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My guess is the vast majority of people in this country don’t know what an adapter is and could care less. The only people I would actually worry about are Mach owners who are too cheap to pay for a third party unit or to impatient to wait for their freebie. It is a nifty idea; however, and I enjoy seeing what people come up with. If someone ever steals mine they obviously needed it more than I did. (Although I am not even sure there is a Tesla charger I can use it on here in Alaska
 

User100723

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Folks,

I love getting stuff for free - free is a great price. However, with the growing use of EVs and the Tesla DC adapter's $230 replacement cost, plus its handy small size and its potential to walk away in vast parking lots especially after dark, I fabricated this locking plate, powder-coated orange, as a theft deterrent.

I had a piece of decent-gauge ELFA steel hanging plate in the basement from a long-ago house project.

I used a Dremel reinforced fiberglass cutting wheel attachment to cut the slots in the ELFA hanging plate's front and to cut away the excess steel, then I used long needlenose pliers to wrap the front steel tongues in onto themselves to provide a locking function once the plate is in its position on the Tesla adapter and the adapter is latched to the car. The empty voids to the left and right of the car's DC latch threshold under the charging cover gave me the idea for the curled-back steel tongues as a securing mechanism.

I also cut box voids into the ELFA plate's raised edges to provide locking anchor points for a small bicycle combination locking strap, available at REI. You can see the yellow bike strap in several pictures... I didn't snug it down as tightly as I intend to when charging at a Tesla Supercharger before I wander off to a grab a bite or to walk the dog, but you should get the idea from the pictures.

There are many ways to do this... the BEST way would have been for Ford / Tesla to design in a locking loop into the adapter's top latch mechanism. Obviously, we are left for now to our DIY efforts...

I at first monkeyed around with a solid aluminum rectangular billet I had laying around to immobilize the adapter's silver latch arm in its locked position, but thick aluminum billets tend to gum up tools etc... hence my eventual shift to thick-gauge steel for this project.

When the steel locking plate is in position and the adapter is locked into the car, they can only be removed (together) by pushing the adapter's now-hidden round silver latch detent into the adapter. The locking plate cannot be pulled back off the adapter, and after I bent it into the general shape of the adapter's top, it also cannot be shifted to the side. It can only be lifted slightly, enough to push the release silver detent.

Hence the yellow bike locking strap... when snugged down, it prevents the locking plate from being lifted enough to use the silver detent. And the side cuts I cut into the locking plate prevent the yellow bike lock strap from being shifted back off the adapter.

Cost, in my design and execution = three Dremel cutting wheels, and $20 to have my local powder coating shop coat the device a very bright color (they chose orange as they had a larger orange job in the works), just for psychological deterrence effect.

I hope this helps people generate ideas out there and keep their Tesla DC adapters from walking away to freedom. There are many ways to fabricate such Tesla adapter locks... this is my version of it.

The attached pics are labeled.

Tesla adapter - lock plate.jpg


Tesla adapter - lock plate front.webp


Tesla adapter - lock plate raw material from ELFA.jpg


Tesla adapter - lock plate raw material from ELFA - inner surface.jpg


Tesla adapter and lock plate.webp


Tesla adapter and lock plate - together.webp


Tesla adapter and lock plate - in position.webp


Tesla adapter and lock plate - in position - side view.webp


Tesla adapter and lock plate - in position - locked.webp


Tesla adapter and lock plate - in position - locked with lock mechanism visible.webp
You the hero man! Now just need to add some Danger High Voltage and Electrocution Hazard Death stickers to make it look legit!
 

Monke

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A lock for the charge port door please!!!! A moron push my charge port door and left it open while my MME was I an uncle club parking lot. People could have walked pass by and hit the port and the fender.
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