Welcome to Tesla Motors Club
Discuss Tesla's Model S, Model 3, Model X, Model Y, Cybertruck, Roadster and More.

UMC Gen 1 or 2? I seem to have parts of both...


Feb 18, 2018
Los Angeles, CA
So I picked up my CPO yesterday, and the UMC is a little strange. From looking at the pictures online, I have all the Gen 1 parts (adapter is only the small part that plugs in at the one end, not the dangling cord, and the UMC box lights up green on the little vertical line as charging), but the part that you plug in to the Tesla directly is the Gen 2 plug (no button, just the circle around the dot). In the pics attached, I circled in red what my UMC is comprised of from each generation...

So if I want to order a 5-20 adapter, I should order the UMC Gen 1 adapter? I just want to make sure before doing so. Sorry if this is an obvious question, but I'm only on day one of being a Tesla owner.

gen 1 circle.jpg gen 2 circle.jpg


Well-Known Member
Nov 25, 2012
Visalia, CA
...So if I want to order a 5-20 adapter...

You need to buy an adapter that fits.

You can identify whether yours Gen 1 or 2 by looking at what looks like a brick.

If that brick has a socket to receive a pig tail, then that's Gen 2.


If that brick has no socket directly on its side end but it has a permanently short cable that has connecting connecting socket, that's Gen 1


So please buy your 5-20 adapter according to what your brick looks like so it can either fit directly to the brick (Gen2) or fit to a short cable that has a socket (Gen1.)

It would be helpful if you can post a picture of what you have.
  • Informative
Reactions: boaterva


Well-Known Member
Jun 5, 2013
Austin, TX
The Gen 1 picture you posted has the original style handle, which is what the OP was confused about. Newer Gen 1 UMCs have the round dot to push on the handle. A similar change was made on supercharger handles a while back.
  • Informative
Reactions: Rocky_H


Well-Known Member
Nov 25, 2012
Visalia, CA
...style handle...

I see the confusion. Thanks.


When buying an adapter, please ignore the handle that fits into your car. Whether it is Gen 1 or 2, old or new, those handles always fit your car so don't rely on that.

Older handle has a clickable physical button:


Newer handle has a painted circle so you know where to click:

  • Informative
Reactions: Rocky_H

Products we're discussing on TMC...

About Us

Formed in 2006, Tesla Motors Club (TMC) was the first independent online Tesla community. Today it remains the largest and most dynamic community of Tesla enthusiasts. Learn more.

Do you value your experience at TMC? Consider becoming a Supporting Member of Tesla Motors Club. As a thank you for your contribution, you'll get nearly no ads in the Community and Groups sections. Additional perks are available depending on the level of contribution. Please visit the Account Upgrades page for more details.