Portable charger

[rs911]

Hello,

To all the EX and street legal MX users out there, are you interested in a more portable charger?

From what I've learn in the past few days, to be compatible, the charger needs to be :
1. in CAN1000 protocol (CAN Baud Rate 250KBS) to communicate with the BMS
2. in the voltage range of the Stark battery (Battery Nominal Voltage 360V)

I contacted both EVPT and TC Charger, I gathered some information and here are the results.
I found 2 chargers that would do the job and be a bit better than a second EVPT23 (the original charger that comes with the Varg).
The EVPT is basically rebranded 3rd gen 3.3kw TC charger (HK-J-312-10).
The HK-MF-312-10 charger is a 4th gen 3.3kw TC charger (lighter and more compact).


The RA2P0360 is a 2kw charger and, I think, an older tech/gen charger, as it's not displayed on the TC charger website in the OBC category.
But still, the efficiency is specified to be the same for the 3 chargers (≥93％).

	Length (mm)	Width (mm)	Height (mm)	Weight (kg)
EVPT23-32010	239	135	123	5,2
HK-MF-312-10	244	229	96	4,6
RA2P0360	277	165	99	3,5

The EVPT23-32010 costs 552.50€ (15% discount, excluding tax) on evshop.eu
TC Charger gave me 2 quotes :
For the HK-MF-312-10 : $390 per unit + $150 (DHL shipping) for 1 unit or $360 for 3 units (excluding tax)
For the RA2P0360 : $190 per unit + $150 (DHL shipping) for 3 to 10 units (excluding tax)

The Stark power cord and charging cable cost 140€ (98,90€ + 39€) and they need to be modified to the proper connectors on the charger side.

The end goal would be to build a case to protect the parts that need it (connectors and maybe a fan).
I found someone who built something like this for the EVPT23-32010 (200€ excluding tax), but I think I could do something in 3D printing that would do the trick and be much cheaper.


Someone already put the EVPT23-32010 in a backpack, but I'm not a fan of not protecting the connectors, and the fan is much more exposed than on the HK-MF-312-10 and RA2P0360.


In comparison, a complete charger with the big and heavy useless case cost 999€ (including tax).

If you want to take a look, you'll find the PDFs attached.

 

[DaveAusNor]

Awesome, I had a look around at this earlier. Thanks for finding so much more info. maybe the lightest option with a way to connect to type 2 EU charger cables would be the best option (similar to that last picture). That would be a good portable way to slow charge the bike when taking longer breaks.
But an even better option would be a cable that could pump straight DC into the bike connected to a CCS type 2 for fast charging, and bypass the charging unit itself.

 

[DaveAusNor]

RA2P0360

277

165

66

3,5

I read the height as 99. so maybe its not the smallest charger, its certainly the lightest.

 

[rs911]

Awesome, I had a look around at this earlier. Thanks for finding so much more info. maybe the lightest option with a way to connect to type 2 EU charger cables would be the best option (similar to that last picture). That would be a good portable way to slow charge the bike when taking longer breaks.
But an even better option would be a cable that could pump straight DC into the bike connected to a CCS type 2 for fast charging, and bypass the charging unit itself.

You only need an adapter like this for type 2 connector with an OBC.

https://www.amazon.fr/dp/B0D59LK9XV/

https://www.amazon.fr/dp/B0CRK6J1L8/

For DC-to-DC charging, some reverse engineering is required to "allow communication" between the station and the BMS.

CAN connection between bike and charger

Has anyone tried to reverse engineer it? If it's standard like NACS you could probably just wire up an adapter and charge from tesla chargers. My delivery date is not till August otherwise I would look into it...

electricdirtriders.com

I read the height as 99. so maybe its not the smallest charger, its certainly the lightest.

Sh** you're right, I read the value in the wrong way, so yes it's 99mm and not 66mm :/
It's lighter but not very compact then...

They also said they could redesign a 1.8-2kw charger "if the quantity is large".
So probably a more compact one with later tech, but I don't know what the required quantity and price would be.

 

[Beagle]

View attachment 13711

I think that's the first time I see someone who managed to do this backpack thing and actually plug it to a charging station.
Kudos to that guy, and to you for finding this and posting it here.

This shows this shouldn't be terribly hard for Stark to have an onboard charger when they release their first proper road bike. Somehow I don't think an onboard charger will be included for the incoming supermoto, the lack of it would be even weirder than for the EX.