Tesla Mobile Connector Gen 1 vs. Gen 2: Which Is Better?

Tesla mobile connectors – also known as UMC or Universal Mobile Connectors – are a kind of backup cable that every Tesla owner should have. Since 2018, Tesla has introduced the generation 2 connectors for its vehicles, but do you know how it’s different from the Gen 1 and which one is better? 

Gen 2 is better than Gen 1 because it comes with more adaptors, doesn’t overheat, has a plastic handle and sealed control button, creates a more solid connection to the adaptors, and is safer. Besides, Gen 2 is compatible with more models, and unlike Gen 1, it’s readily available to purchase online.

In this article, we’ll take a closer look at the Gen 2 UMC and compare it to the Gen 1 UMC to help you decide which one is the best fit for your Tesla. Get ready to experience the ultimate in Tesla charging convenience and power with the Gen 2 UMC.

Tesla Mobile Connector Gen 1

As the name suggests, Gen 1 was the first generation of Tesla mobile connectors introduced for all Tesla models produced between 2012 and 2017, including Model S and Model X. It allowed the Tesla owners to connect their cars to various outlets, including domestic sockets or campsite power outlets. 

However, it’s not prevalent anymore, and with the launch of Gen 2 and even Gen 3 of Tesla mobile connectors, it’s been almost phased out. It’s only used for pre-2018 Model S and Model X Teslas. Let’s take a look at its specifications.

Gen 1 Tesla connector allows 2.3kW-3.7kW of power, but you can increase it up to 11kW with the optional extra 16A 11kW Red commando adaptor p/n 1024110-02-A or 1024110-00-D.

Gen 1 mobile connector comes with a round bag for storage. It also contains a 13A 3-pin plug plus a 32A Blue Commando Socket. 

The Gen 1 Tesla mobile connector is rated as IP44, which shows it’s splash-proof. So, it’s safe if you leave it outside unprotected in the rain or if it’s not elevated.

On a somewhat similar note, I also wrote a detailed article about Tesla being able to charge in the rain or not. Check out these helpful hacks and let me know what you think!

Its user manual includes common faults, safety precautions, how to reset, and comprehensive fault codes, among others.

On the back of the Gen 1 mobile connector’s main brick, there’s also a reset button that you can use if it fails. It can be single or three-phased, and its cable is 6 meters or 20 feet in length. 

Tesla Mobile Connector Gen 2

The generation 2 Tesla mobile connector comes with all Model 3 Teslas and every Model S and X produced from 2018 onwards. It’s somehow an upgrade of the Gen 1 connector; that’s why they’re very much alike.

However, they have their differences. Let’s see what its characteristics are.

The Gen 2 Tesla mobile connector allows 2.3kW-3.7kW of power as its standard output, but you can increase it up to 7kW with the optional extra 32A 7kW Blue commando adaptor p/n 1104948-00-B.

Its storage bag isn’t circular anymore and is square.

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It also contains a 13A 3-pin plug – previously, it contained a 16A Blue Commando socket, but as of 2021, it’s not included anymore. Gen 2 connector is rated as IP44, indicating it’s splash-proof and can be left unprotected outside.

There’s also a complete list of fault codes in its user manual, containing common faults, and other safety considerations.

Gen 2 doesn’t have a reset button on the backside of its main brick because it simply doesn’t need it.

The Gen 2 mobile connector is single-phase and offers automatic phase inversion. The cable is 20 feet (6 m) in length. 

On a somewhat similar note, I also covered the basics on How Many Amps Are Needed To Charge an Electric Car. Check out this informative and link worthy article!

Tesla Mobile Connector Gen 1 vs. Gen 2

Now that we know the specifications of each connector, let’s compare them and see in what ways they’re similar or different. 

Similarities 

Both have the same standard Tesla connector to plug into the charging outlets to offer more convenience. They also look very similar.

The only difference is that the Gen 1 looks a bit curvier, while the Gen 2 has a sleeker design – it’s a newer generation, after all! 

Both connectors have a 20-feet (6 m) cable that seems to be enough for most situations. But if you find it short and can’t extend it, rethinking how you park your car may be helpful.

They also come with a J1772 connector – or some say, adaptor – which allows you to use all universal chargers and recharge your vehicle safely. 

Differences

The first noteworthy difference between the two is their packaging. While Gen 1 comes in a round bag, the Gen 2 packaging is square. It’s only a matter of a better design class. 

In Gen 1, the handle features a metal stainless steel replaced with a hard but nice-to-touch kind of plastic in Gen 2. The reason is that some overheating issues were reported in metal handles. 

They’re also different regarding the adaptors. While both connectors come with the NEMA 5-15 and NEMA 14-50 adaptors – as of 2019, there’s no NEMA 14-50 included with Gen 2 – their appearance is very different in the two generations. 

Gen 1 comes with a power outlet of 40 amps which allows the Model S and X owners to have an onboard charging of 40 or 80 amps with a single or a twin charger option.

So, it maximizes the onboard charging rate and can give you a 29 mph (47 kph) range for Model S and around 25 mph (40 kph) for Model X. 

But Gen 2 has a power outlet of only 32 amps to the car because Tesla has decided to lower the average to eliminate the overheating issue. However, it perfectly matches the Tesla Model 3 onboard charging rate. 

The cladding on the Gen 1 connector’s cable is thicker than Gen 2, but both are the same length. Despite its relative thinness – which is due to lower amps and weight – Tesla promises it’ll work for at least 6 years. 

In Gen 1, the distance between the transformer and the adaptor is about 11 inches (28 cm), while in Gen 2, this distance is only around 7 inches (18 cm) which allows you to see the status indicator on its backside. 

Gen 1 has a NEMA 4x rating, but Gen 2 has a NEMA 3r Rating, which isn’t a big difference.

NEMA is a standard rating system defined by The National Electrical Manufacturer Association (NEMA), which shows how an electrical enclosure can withstand different environmental conditions. 

Another important difference between the two generations is that Gen 1 comes with limited adaptors, and it has a regular transistor which doesn’t protect it from overheating.

But Gen 2 offers more controllability with the circuit board chip inside the adaptor, which has a temperature sensor and a memory chip. 

Here’s a helpful video on Gen 1 and Gen 2 differences: 

Here’s a table that summarizes what we mentioned above: 

The Verdict: Gen 1 vs. Gen 2 Tesla Mobile Connector 

Gen 1 and Gen 2 Tesla mobile connectors are mostly similar, and there’s no significant difference between the two. The only thing that matters is their compatibility and some overheating issues in Gen 1. 

While Gen 1 is only offered for all the Pre 2018 Teslas, Gen 2 comes with all Teslas made after 2018, including Model 3, Model X, and Model S. Additionally, Gen 1 has some overheating issues, which are resolved in Gen 2 with the help of a circuit chip. 

Another noticeable thing to point out is that the overall connection in Gen 2 is much better and safer than Gen 1.

Besides, the control button in Gen 2 is sealed to prevent water from getting inside. 

Why Gen 2 Is The Safer Option

When assessing the Tesla Mobile Connector Gen 1 and Gen 2, you can begin by examining their safety features and ratings, particularly focusing on overheating protection features and weather resistance ratings.

A key aspect to consider in this evaluation is how each generation handles overheating issues, as this directly affects user safety and device longevity. The significance of overheating protection can’t be overstated, as it plays a critical role in preventing damage to both the connector and the vehicle.

Furthermore, it also mitigates the risk of accidents or injuries caused by overheating-related malfunctions. Additionally, both models are designed with Weather Resistance, a crucial feature in preventing electrical hazards and ensuring safe operation in various environmental conditions.

Building on this assessment, you can also inspect the IP ratings of both connectors to determine their ability to withstand diverse weather conditions. The IP rating is an essential metric, as it provides insight into the level of protection each connector offers against solid particles and water ingress.

Overheating Protection Features

When it comes to overheating protection, the Gen 2 Mobile Connector takes the cake. Unlike its predecessor, it doesn’t have a reset button, which suggests that circuit chip improvements have reduced overheating issues.

Key differences in overheating protection between the two models include:

• A sealed control button in the Gen 2 to prevent water ingress and reduce overheating risks.
• The Gen 2 also features safer and more secure adapter connections compared to the Gen 1, reducing the risk of overheating due to poor connections.

The Gen 2 can also charge at a maximum speed of 32 amps and is designed to work efficiently with various Tesla models, including those that require higher charging speeds.

Regular inspections of your charging equipment, such as checking for overheating issues, can help identify any visible signs of damage or wear that could lead to overheating issues. Both the Gen 1 and Gen 2 Mobile Connectors have a GFCI safety feature that helps prevent electric shocks and detects ground faults, improving safety in overheating situations.

The Gen 2’s improved safety features against overheating, including a more secure and sealed control, make it a better choice for Tesla owners.

Weather Resistance Ratings

The Gen 2 Mobile Connector is a significant upgrade from the Gen 1, particularly when it comes to weather resistance. While the Gen 1 is limited to dry conditions, the Gen 2 boasts an IP44 rating and splash-proof design, making it perfect for outdoor use in light rain.

Compatibility of Tesla Models with the Gen 2 connector

The Gen 2 Tesla Mobile Connector is compatible with a variety of Tesla models, including all Model 3 vehicles, as well as Model S and Model X vehicles produced from 2018 onwards.

It is important to note that the Gen 2 connector is not compatible with pre-2018 Model S and Model X vehicles, which are compatible with the Gen 1 connector.

Before purchasing a Gen 2 Mobile Connector, it is essential to check the compatibility of your vehicle model and production year to ensure that it will work with your Tesla. This information can be found on the Tesla website or by contacting Tesla customer support.

It’s also worth mentioning that the Gen 2 mobile connector is not compatible with Tesla vehicles that are fitted with a CCS2 connector, as it is only compatible with vehicles with a J1772 connector.

Charging capabilities between the two connectors

When it comes to charging capabilities, both the Gen 1 and Gen 2 Tesla mobile connectors offer slightly different options. It’s important to consider these differences when deciding which connector is best for you.

Gen 1 Connector:

• The standard output of 2.3kW-3.7kW
• Can be increased to 11kW with an optional extra 16A 11kW Red commando adaptor p/n 1024110-02-A or 1024110-00-D

Gen 2 Connector:

• The standard output of 2.3kW-3.7kW
• Can be increased to 7kW with an optional extra 32A 7kW Blue commando adaptor p/n 1104948-00-B

It’s important to note that the maximum charging speed will depend on the power source you are using and your vehicle’s charging capabilities.

The Gen 1 connector can charge at a higher rate, but the Gen 2 connector is still more than adequate for most Tesla owners.

It’s also worth mentioning that the Gen 2 connector is equipped with automatic single phase inversion, which means it can automatically adjust the phase of the current to match the power source, allowing for more efficient charging.

Automatic Phase Inversion

One of the key features of the Gen 2 mobile connector is its ability to automatically adjust the phase of the current to match the power source. This is known as “Automatic Phase Inversion”.

Here’s what that means and how it affects charging:

• Electrical power is supplied in three phases, each phase is offset by 120 degrees from the other.
• Automatic Phase Inversion allows the Gen 2 connector to automatically detect the phase of the power source and adjust the phase of the current accordingly, ensuring that it is matched up to the power source for more efficient charging.
• This feature ensures that the maximum amount of power is delivered to the vehicle, resulting in faster charging times and better overall performance.

It’s important to note that the Gen 1 connector does not have this feature, which could result in slower charging times and less efficient performance.

Gen 2 mobile connector offers Automatic Phase Inversion, which allows it to automatically detect the phase of the power source and adjust the phase of the current accordingly, ensuring that it is matched up to the power source for more efficient charging.

This feature ensures that the maximum amount of power is delivered to the vehicle, resulting in faster charging times and better overall performance.

Performance and Charging Speed

Performance is where the differences between the Gen 1 and Gen 2 Mobile Connectors become apparent.

The Gen 1 supports 40 amps and charges up to 29 miles per hour when paired with a NEMA 14-50 outlet. That’s great for high-end Teslas like the S and X.

On the other hand, the Gen 2 only supports 32 amps and charges up to 27 miles per hour under the same conditions.

This makes it better suited for standard range Teslas like the Model 3. It provides decent charging speeds without risking overheating issues.

One thing to note is that both connectors can be used with multiple power outlets, and adapters are available for different outlets.

A 240 volt outlet provides higher charging speeds, making the Gen 2 suitable for users who have access to such outlets. Both the Gen 1 and Gen 2 Mobile Connectors feature built-in overload protection to ensure safe and efficient charging.

The Tesla Mobile Connector is designed for portable charging, allowing you to charge your vehicles on-the-go or at different locations with varying power outlets.

Key factors to consider.

• Compatibility: Gen 2 mobile connector is compatible with all Model 3 vehicles, and Model S and Model X vehicles produced from 2018 onwards have J1772 connectors. Gen 1 connector is only compatible with pre-2018 Model S and Model X vehicles.
• Charging Capabilities: Gen 1 connector allows standard 2.3kW-3.7kW of power and can charge at 11kW with an optional adaptor. Gen 2 Connector allows standard 2.3kW-3.7kW of power and can charge at 7kW with an optional adaptor.
• Automatic Phase Inversion: Gen 2 connector offers Automatic Phase Inversion, which allows it to automatically detect the phase of the power source and adjust the phase of the current accordingly, ensuring that it is matched up to the power source for more efficient charging.

Based on these factors, the Gen 2 mobile connector is a better choice for most Tesla owners. It is compatible with a wider range of vehicles, offers automatic phase inversion for more efficient charging, and is readily available to purchase online.

However, if you own a pre-2018 Model S or Model X, the Gen 1 connector is the only option available for you.

Design and Construction Comparison

Comparing the Tesla Mobile Connector Gen 1 and Gen 2 reveals a notable difference despite their similar physical appearance.

Both models have a 20-foot (6 meters) long cable, making them convenient for charging on the go.

Gen 2 is slightly lighter, weighing around 5.2 pounds compared to Gen 1’s 6 pounds. This weight difference may not seem significant, but every ounce counts when you’re lugging around a charging cable.

Gen 1 boasts a NEMA 4x rating, but Gen 2 takes it up a notch with an IP44 rating, not IP67, making it more resistant to the elements.

The designs of both Gen 1 and Gen 2 have a 32A Blue Commando Socket for increased charging capabilities.

Gen 2 also features a higher power output, with up to 7.7 kW of AC power, allowing for faster charging times.

Gen 2 has a more robust and durable design compared to Gen 1, featuring internal GFCI protection.

When it comes to construction, Gen 2 is a clear winner. It features improved circuitry and thermal management, making it a safer and more reliable option. In contrast to the Wall Connector, which provides faster charging with a maximum power output of 48A, the Mobile Connector has a maximum power output of 32A, resulting in slower charging speeds.

The upgrade from a round to a square storage bag is also a nice touch.

Ready for more insights on Tesla charging? Explore our Ultimate Tesla Charging Guide for expert tips, in-depth comparisons, and proven strategies to streamline every aspect of powering up your EV.