Home charging

[ekk188]

I purchased a similar product (80 amps) on Amazon with supposedly great reviews. Will need to purchase Tesla Tap mini 80 amp version instead.

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[ekk188]

Why do you need to remove it? It's ok to keep it on permanently.
That said, I did use the 80A TeslaTap mini on one of mine, and yes, it was really tight, so I ended up lubricating with this (I happened to have some around):
https://www.amazon.com/Krytox-Grease-Pure-PFPE-PTFE/dp/B00MWLD61A
However, once you do that, it does leave grease on the Tesla plug, which will sometimes get on your hands when handing it (the lubricant above is fairly inert, but still slippery on your hands). Sanding down the plug might me a better solution if you need to switch the adapter often. For me, I permanently switched out the cable (you can just switch out the plug too) converting the HPWC to J1772 permanently. There is even a dip switch inside which lets you disable the Tesla comms protocol, which cuts down on the charging start delay. I currently have 2 HPWC's balancing 80A, one Tesla and one J1772, though might be converting the other one to J1772 in the near future as I'm considering replacing the Tesla with non-Tesla EV.

Thanks for your suggestions. It was tight removing the adapter from the Taycan as well. How did you replace the cable permanently. Will really appreciate if you can post a link to that product.

 

[whitex]

What brand adapter are you using? I'm using a tesla tap mini(60amps) and it works great.

TeslaTap Mini works great with Mobile Connectors or Gen 3 HPWC. HPWC Gen2 (probably Gen1 as well) Tesla plugs are ever so slightly larger. Could be because they are 80A capable (vs.. 32A/40A/48A in other Tesla EVSEs) - they fit but very tightly.

 

[ekk188]

TeslaTap Mini works great with Mobile Connectors or Gen 3 HPWC. HPWC Gen2 (probably Gen1 as well) Tesla plugs are ever so slightly larger. Could be because they are 80A capable (vs.. 32A/40A/48A in other Tesla EVSEs) - they fit but very tightly.

That's great feedback. I have the Gen 2 wall charger as I was charging at 80A for my Telsa. Hopefully, the 80A mini tap can accommodate the slightly larger Tesla plug.

 

[whitex]

That's great feedback. I have the Gen 2 wall charger as I was charging at 80A for my Telsa. Hopefully, the 80A mini tap can accommodate the slightly larger Tesla plug.

It does, it's just tight. If you never have to take it off, not a problem at all. If you do have to take it off, then either sand it down slightly, or lubricate. I will post at a later time on how the conversion can be done, need to collect this information first.

 

[CatWithBat]

I have the 32 amp circuit fitted in my garage delivering 11kw. If I had the 22kw upgraded onboard charger in my car I could get up to 22kw.
In Australia you cannot untick the option of charging so you have to pay for the wall charger as part of the purchase. I have charged at home and it works well.
Also at hotels Porsche have installed this same charger and call it the Porsche destination charger.
At the Porsche centre they have dc chargers at 150kw.
In the states is it cheaper to purchase other brand of chargers?

Yes, I have the same setup - 32a 3-phase, PMCC and Porsche wallbox to house it, plus a "Home Energy Manager" device that should prevent over current situations and allow for integration to your PV system. The car came with all this as standard.

NA problems with PMCC notwithstanding, for me it's been a reliable charger, with the advantage you can easily unmount the PMCC and take it with you on trips.
I've not been able to get it to work correctly with my solar panels + battery with Reposit smart grid controller. It should be able to monitor PV generation and charge the car with excess solar energy. But there is no accommodation for a smart battery that feeds back to the grid. Effectively the battery + Reposit system conflict with the PMCC solar optimisation, so I have had to disable PMCC solar optimisation unfortunately.

I have a Zappi at our beach house which is a very good smart smart EV charger. It works well with the PV system we have there - no smart grid battery to conflict
However, it's not portable...
https://www.myenergi.com/au/zappi-ev-charger/

 

[whitex]

Thanks for your suggestions. It was tight removing the adapter from the Taycan as well. How did you replace the cable permanently. Will really appreciate if you can post a link to that product.

The TeslaTap Mini gave me no troubles removing from the Taycan, only the HPWC Gen2, it was going on easy onto Mobile Connector Gen 1 and HPWC Gen 3.

Replacing the cable was not rocket science, but you have to be comfortable with some DYI. Here is a video going through the process on a Gen 3, Gen 2 is similar (see my notes below)


Now, a few things to note.

1. The new cable needs to be capable of handing the max current you plan on using it. I use my HPWC's at their max 80A, so I had to find a cable and J1772 capable of 80A, which took some time - I eventually found some used ones on ebay. If you plan on using less, make sure you put a sticker inside to never change the rotary dip switch above the J1772 cable rating
2. Instead of changing the cable, you can reuse the Tesla cable and swap out the plug. 80A are also hard to find, and expensive, but here is one: https://qccharge.com/products/j1772-plug-assembly?variant=39410347999391 .Not cheap, I've seen them on Alibaba for $50 but you have to order in volume
3. You don't need the bypass circuit since mentioned in this video since you can just change the Tesla Comms dip switch instead.
4. In the video the guy used a 10K resistor to essentially fake out (disable) a temperature sensor. J1772 handles don't usually have temp sensing, but my cable had extra signals available and I like going the extra mile on my projects, so I put one in and connected it anyways. You will also have sufficient signal cables if re-using Tesla cable. I used this thermistor as it seemed to match the ones found in Tesla handle teardowns: https://www.digikey.com/en/products/detail/epcos-tdk-electronics/B57164K0103J000/739847 . It's been working just fine charging my Taycan at 80A.

Also, there is a place which advertises they will do the conversion for you: http://www.umc-j1772.com/index.php?route=product/product&path=67&product_id=175 . They even let you choose the length of the cable you want.

If you are only using 48A from the HPWC, perhaps a bit more money but lot less hassle would be to pickup a J1772 version of HPWC Gen3 instead? I decided on the conversion because I wanted 80A shared between 2 cars (only Gen2 HPWC supports this), plus I already had them wired up in the garage. Here is my setup right now:

The Tesla is getting replaced soon, which means I will be converting the other HPWC at that time.

 

[Elroy]

My utility company has an EV program where I pay $14/mo and they installed a chargepoint home flex. If it breaks they'll replace it. They also paid for a lot of the electrical work.

Maybe see if your utility provider has a similar option.

Good idea and thanks for the advice. I will check with them here in North Texas and repot back.

This is the way
My gts is Coming in August (targeted).
Just did this with Emporia charger.

You are going to love your GTS. Thanks for your feedback and suggestions. Unfortunately Oncor, here in Texas, does not offer any help on EV chargers. I am upgrading to 60amps and replacing my Porsche wall-mount charger. Does anyone have an opinion on the Enphase HCS-60 vs. the Chargepoint Homeflex Hardwire? Thanks

 

[ekk188]

The TeslaTap Mini gave me no troubles removing from the Taycan, only the HPWC Gen2, it was going on easy onto Mobile Connector Gen 1 and HPWC Gen 3.

Replacing the cable was not rocket science, but you have to be comfortable with some DYI. Here is a video going through the process on a Gen 3, Gen 2 is similar (see my notes below)


Now, a few things to note.

1. The new cable needs to be capable of handing the max current you plan on using it. I use my HPWC's at their max 80A, so I had to find a cable and J1772 capable of 80A, which took some time - I eventually found some used ones on ebay. If you plan on using less, make sure you put a sticker inside to never change the rotary dip switch above the J1772 cable rating
2. Instead of changing the cable, you can reuse the Tesla cable and swap out the plug. 80A are also hard to find, and expensive, but here is one: https://qccharge.com/products/j1772-plug-assembly?variant=39410347999391 .Not cheap, I've seen them on Alibaba for $50 but you have to order in volume
3. You don't need the bypass circuit since mentioned in this video since you can just change the Tesla Comms dip switch instead.
4. In the video the guy used a 10K resistor to essentially fake out (disable) a temperature sensor. J1772 handles don't usually have temp sensing, but my cable had extra signals available and I like going the extra mile on my projects, so I put one in and connected it anyways. You will also have sufficient signal cables if re-using Tesla cable. I used this thermistor as it seemed to match the ones found in Tesla handle teardowns: https://www.digikey.com/en/products/detail/epcos-tdk-electronics/B57164K0103J000/739847 . It's been working just fine charging my Taycan at 80A.

Also, there is a place which advertises they will do the conversion for you: http://www.umc-j1772.com/index.php?route=product/product&path=67&product_id=175 . They even let you choose the length of the cable you want.

If you are only using 48A from the HPWC, perhaps a bit more money but lot less hassle would be to pickup a J1772 version of HPWC Gen3 instead? I decided on the conversion because I wanted 80A shared between 2 cars (only Gen2 HPWC supports this), plus I already had them wired up in the garage. Here is my setup right now:

The Tesla is getting replaced soon, which means I will be converting the other HPWC at that time.

Oh wow, thank you so much for the detailed explanation here.

 

[ekk188]

Good idea and thanks for the advice. I will check with them here in North Texas and repot back.

You are going to love your GTS. Thanks for your feedback and suggestions. Unfortunately Oncor, here in Texas, does not offer any help on EV chargers. I am upgrading to 60amps and replacing my Porsche wall-mount charger. Does anyone have an opinion on the Enphase HCS-60 vs. the Chargepoint Homeflex Hardwire? Thanks

You might also want to consider the J1772 Wall Connector from Tesla. 60A capable and a smaller form factor than comparable chargers. Also, good value at $550.

https://shop.tesla.com/product/j1772-wall-connector

 

[daveo4EV]

Good idea and thanks for the advice. I will check with them here in North Texas and repot back.

You are going to love your GTS. Thanks for your feedback and suggestions. Unfortunately Oncor, here in Texas, does not offer any help on EV chargers. I am upgrading to 60amps and replacing my Porsche wall-mount charger. Does anyone have an opinion on the Enphase HCS-60 vs. the Chargepoint Homeflex Hardwire? Thanks

either are excellent choices - I would also include the Tesla Wall Charger J-1772 - it's $550 - does 60/48 amps (60 amp breaker) and can easily "networked" for future multi-ev charging with 2 Tesla Wall Charger's sharing the 60 amp circuit while charging both EV's - or giving one EV "full" capacity when charging solo - also at $550 it's best price of the chargers - but the Enphase/ClipperCreek and ChargePoint are also excellent choices - Enphase/ClipperCreek has a "share2" function that allows you to add a 2nd Enphase/ClipperCreek - call their customer support and make sure you get the Share2 version - so that in the future if you want to add a 2nd one you already have the correct 1st one.

but hard to go wrong with you two choices.

 

[daveo4EV]

You might also want to consider the J1772 Wall Connector from Tesla. 60A capable and a smaller form factor than comparable chargers. Also, good value at $550.

https://shop.tesla.com/product/j1772-wall-connector

and the ability to easily add a 2nd, 3rd one sharing a single circuit is a huge plus in my book for this unit.

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