Thoughts on Dual EV Home Charging

Models
1

I just got my second electric vehicle to swap out my partner’s gas car. I have a Tesla Model 3 Performance, and we just picked up a Chevy Equinox EV.

I’ve got 220 volts set up, but I’m facing a problem. The Tesla uses NACS, and the Chevy uses J1772. I’ve heard that constantly switching plugs can be harmful to the 220 outlets. Has anyone dealt with this? What solutions did you find?

I know there are adapters available for a couple of hundred dollars that would let the CCS charge on my Tesla charger.

Thanks for any insights.

edit

I want to keep my Tesla mobile charger as the main charger. Also, I bought my Tesla used, and it didn’t come with any adapters.

2

Consider getting a hardwired Tesla Universal Wall Connector. It can charge J1772 with a built-in adapter or a NACS. We only have a J1772 vehicle, but we bought this to keep our charging options flexible. It works well.

3

@Mica
I did something similar. I bought two of these and connected them in series. One can pull full power at 48A when only one is plugged in, or split it to 24A if both are in use. Plus, they both support NACS and J1772, so they can charge anything.

4

@Mica
This is definitely the right choice.

5

*Remember, it’s J1772, not CCS. CCS is only for DC Fast Charging.

Frequently plugging and unplugging from your wall outlet is not a good idea.

If you just want to charge the Chevy using your Tesla charger or the Tesla using a J1772 charger, there are affordable adapters available. TeslaTap is one option, but there are others too.

For simultaneous charging of both cars, you might want to look at chargers like Grizzl-E or Enphase, which have two cables that share the load. Alternatively, you could install a second circuit and charger.

6

Use a J1772 as your base charging setup.

Hardwiring is best if you can.

You can use the adapter that came with the Tesla on the J1772 for charging it.

7

I have two chargers and installed a Tesla Wall Connector. The speed compared to 14-50 is enough for us to charge both vehicles overnight without needing to wake up in the middle of the night to swap plugs.

8

Your Tesla comes with an adapter. Install a J1772 EVSE (CCS is the fast charger) and then use the adapter.

You might also consider the Tesla Universal Wall Connector, which has an adapter included.

9

You could hardwire two Tesla Universal Wall Connectors, or if you prefer to stick with a plug, the Grizzl Duo might fit your needs.

10

You can find adapters for less than $100.

Only the fast charging adapters cost a couple of hundred.

11

I have a Tesla Universal charger for situations like this.

12

Keir said:
I have a Tesla Universal charger for situations like this.

This is the best solution. That’s what we installed to keep options open for the future.

13

You might consider getting this installed permanently. Then add a J1772 to NACS adapter.

Here’s a link to a product: Amazon.com: Grizzl-E Duo Level 2 Plug in EV Charger, up to 40 Amp, Two 24 feet Premium Cables (14-50 Plug) : Automotive

14

Chevy uses J1772 for AC Charging, not CCS. Just a correction for clarity.

15

I’m surprised to see that Tesla to J1772 adapters are cheaper now, but that seems like the right choice. I’ve been adapting the other way (J1772 to Tesla) for years without any issues.

For what they cost, grab a $10 J1772 to Tesla adapter for your Model 3. You might find it useful for charging at hotels later. Those are usually included with the car.

16

Could some of you manage with Level 1 charging? Many EV owners find that sufficient for their driving needs and can avoid the hassle of installing Level 2 charging.

Here’s an article that discusses this: https://www.wsj.com/business/autos/electric-car-charging-at-home-level-1-7a658eb9?st=nQu5y3&reflink=article_copyURL_share

17

Here’s a link to a NACS to J1772 adapter I recommend. I use this one, and it costs $50: Amazon.com: EVDANCE NACS to J1772 Charging Adapter - Max 80 Amp & 250V J1772 EV Adapter Compatible with Tesla High Powered Connectors Destination Chargers and Mobile Connectors (Black) : Automotive

18

Consider getting a second Tesla Wall Connector, preferably the Universal model, and install it on the same circuit.

The Tesla Wall Connectors can coordinate to charge your vehicles without overloading the circuit they share. I think this can work with up to five Wall Connectors, but you might want to check for more information.

19

A J1772 to NACS adapter came with your Tesla. NACS to J1772 adapters cost about $50 online. It’s worth having both types of adapters.

I’d leave the vehicle that drives more plugged in and use the adapter for the other one.

20

You could swap an A2Z Stellar adapter on the Tesla charger. Both the Tesla plug and the adapter are made for frequent plugging and unplugging.

It’s around $100 for the Tesla to J1772, which is what you need for home charging.

A $200 CCS adapter (like the A2Z Typhoon Pro) is for DC fast charging and won’t work at home. Your partner might want both if the Chevy needs charging out of town.

A2Z has a bundle for both. They offer various discount codes, so check the forums for the latest offers.