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[flo_93]

Hi

I want to fast charge my zero S 2014 and was thinking about buying this charger:

https://www.alibaba.com/product-detail/3-3KW-EV-electric-vehicle-on_62534604736.html?spm=a2756.order-detail-ta-ta-b.0.0.1ac12fc2xDIrNE

Does anyone of you have experience with this charger?

What else do i need (except the Anderson port) to use it and to have the "charge enable" pin?

thanks!

[DonTom]

Hi

I want to fast charge my zero S 2014 and was thinking about buying this charger:

https://www.alibaba.com/product-detail/3-3KW-EV-electric-vehicle-on_62534604736.html?spm=a2756.order-detail-ta-ta-b.0.0.1ac12fc2xDIrNE

Does anyone of you have experience with this charger?

What else do i need (except the Anderson port) to use it and to have the "charge enable" pin?

thanks!

You will probably find some useful info here.


If you mean the charge enable on the bike, you will not need to use it as long as you also use the OBC to close the contactor. You will then charge at around 4.7 KW, (if your 2014 has a 1.4 KW charger).


If there is a charge enable on the charger you're buying, you usually have two wires to short together to activate the charger. You can permanently  solder them together and leave it always activated as I did with my external Elcon chargers.


-Don-  Reno, NV

[travbee]

I helped do a group buy on a handful of programmed units.

I plan to help get more, but they won't be available until July apparently.

But yes - these work very well, need to be programmed, and plug into the aux port with an Anderson SBX75BRN connector.

[flo_93]

Thanks for the info!
I already ordered it and had it set to 116V max.
Seller said there is also a 12v line on the charger - could i use that for the Charge Enable Pin?

[DonTom]

Thanks for the info!
I already ordered it and had it set to 116V max.
Seller said there is also a 12v line on the charger - could i use that for the Charge Enable Pin?

What charge enable pin are you asking about?  Where is it located?


-Don-  Reno, NV

[DerKrawallkeks]

@Flo sure, for this you use a 5V linear regulator (they cost 30ct) connect the 12V on its input and use the output 5V into the charge enable pin. Make sure to use a 10k resistor in this 5V signal line to the bike:)

[flo_93]

Thanks!
Will this voltage regulator work?
L7805CV Linear Regulator

https://www.adafruit.com/product/2164

Why is the 10k resistor needed?

thanks!

[DerKrawallkeks]

Yes this one is perfect and very common. It's the same one I use.

The resistor is there to protect the bikes electronics. We don't really know what is on the other side of the little signal pin, maybe it's a 3.3V electronic. So for good measure, and since it works just fine, we use a resistor.

[Crissa]

Yeah, the resistor is so it's not just a dead short.

-Crissa

[DonTom]

Thanks!
Will this voltage regulator work?
L7805CV Linear Regulator

https://www.adafruit.com/product/2164

Why is the 10k resistor needed?

thanks!

The resistor lowers the current. The regulator shouldn't be necessary if the resistor is used. After the 10K ohm  resistor the current will be so low you won't have to worry about it doing any harm. Because of this, the resistor is a better idea. You don't want it regulated--that will be a lot more possible current that will not load down as easily under the very light load.


-Don-

[NoMoreIdeas]

You should also know that 12v on the charger is extremely noisy when charging, especially the more amps you draw from the charger. So much so that I couldn't run an Arduino on it, even through a generic buck converter. and a cap on both ends.

[DonTom]

You should also know that 12v on the charger is extremely noisy when charging, especially the more amps you draw from the charger. So much so that I couldn't run an Arduino on it, even through a generic buck converter. and a cap on both ends.

Try a choke in series.


I am now working on a problem with charger noise. I have reasons to believe the electrical noise from my Elcons on the AC cord are turning off the 16KW Tesla Destination stations on me. So I am adding this filter and will see what happens in a couple of days.


The filters should be here today.


-Don-  Reno, NV

[Richard230]

You should also know that 12v on the charger is extremely noisy when charging, especially the more amps you draw from the charger. So much so that I couldn't run an Arduino on it, even through a generic buck converter. and a cap on both ends.

Try a choke in series.


I am now working on a problem with charger noise. I have reasons to believe the electrical noise from my Elcons on the AC cord are turning off the 16KW Tesla Destination stations on me. So I am adding this filter and will see what happens in a couple of days.


The filters should be here today.



-Don-  Reno, NV

Speaking of chokes, my 2018 S had two in series (which didn't help it's internals keep from burning up), however the replacement OBC has only one. I have a lot of AC noise at my home but none of it is coming from my charger, unless I place a cheap AM radio near my Zero when it is charging.

[DerKrawallkeks]

@DonTom A regulator should also be used. If you have a microcontroller with a very high resistance input, then it's possible that no charge/current flows away at all. So even if you have a very large resistor, at 12V+  it'll just take a few milliseconds longer to raise the voltage and kill the microcontroller.

So a 5V regulator, and then a resistor on top is the cleanest version.
(I know people were putting large resistors between the battery +
and the signal line, but that's just a horrible idea:D)

[DonTom]

So a 5V regulator, and then a resistor on top is the cleanest version.

As long as both are used, I agree. The resistor is a must in either case.


-Don-  Reno, NV