Stark mobile charger is out !

[OpaTsupa]

its software bug, It is not possisble with single socket/single charger
3,3kW on 230V - real current 14,3A from socket - I put once 20A on shucko for experiments - I use high quality audio plug and 4mm wires - it works but socket and terminals was VERY VERY HOT
I cant imagine to put 25-28A on regular outlet

Looks like this is only Temu Heavy Duty Premium Fast Charging.

From 60% to 90% = 39 minutes

After 25-30 minutes and around 75% the "current charging power" on the phone started dropping bit by bit, and finished at 3.3kW.










Shuko wall plug temperature rose from 19° to 27°.
Charger temperature from 19° to 37°.
Battery: 19° to 26°.

ChatGPT calculation:

 

[drehwurm68]

Not that I've ever opened them, but both the cable that connects the wall socket to the charger and the one that connects the charger to the bike have a sheath that must cover more than a wire,

For the AC side I just use an adapter (plug and socket) with short single wires without a common sheath. One side of the adapter goes into the wall socket the other connects to the charger plug. Then you measure the amperage on a single wire (phase or neutral).

Michael

 

[szczur333]

Looks like this is only Temu Heavy Duty Premium Fast Charging.

also stark numbers doesnt add up

they claim 82min 0-80%
3,3kW with 82min = 4,51kWh
4,51kwh = 80% ---> 5,64kWh = 100% :O

 

[Chadx]

also stark numbers doesnt add up

they claim 82min 0-80%
3,3kW with 82min = 4,51kWh
4,51kwh = 80% ---> 5,64kWh = 100% :O

Maybe they meant 20% to 80% which is a common recharge span for EV and the SOC span where fastest charging is possible with lowest battery degradation over time. And that is only 60% of 7.2kWh so close to your calculation. Odd they would use a "0% to anything" spec since discharging to 0% is a no-no. My guess is the wording was "to 80%" and the fine print, somewhere, said "starting from 20%" or something like that. Ha.

 

[Erwin P]

what a beautiful and caring customers we are uh? hahaha

The more actual problems they solve, the more bikes they sell, the cheaper used bikes will get.
Did i mention i'm in the market for a used EX?

 

[szczur333]

from some facebook group(not official)
6,6kW external chargers for track fast charging

 

[Theo]

Well, if they want to test fast charging in the Norhtern emisphere, this is the best part of the year to be successful because in the extreme heat of summer presumably the current would be limited because of thermal limits and when it’s too cold charging shouldn’t be done.
I also guess that enduro would be more suited to fast charging since the power output is less than with motocross and so it’s less likely to have overheating.

 

[Karinshi]

from some facebook group(not official)
6,6kW external chargers for track fast charging

View attachment 15130

i see the number 7 on the side of that 6.6 chargers... maybe its a logo but for me it seems like a "7" (possibly the 7kw power) and below maybe it says "stark future" in small letters, i dont really know... it could be a third party brand, interesting...

 

[OpaTsupa]

from some facebook group(not official)
6,6kW external chargers for track fast charging

View attachment 15130

Could that orange box in the background be a generator?
I wonder how much diesel it will drink to charge 10 x 6.6kW.

Charger looks nicer and more practical than the gen.1 charger.
The plug is not household shuko plug.

 

[szczur333]

one more pic


shucko is up to 16A but usually safe longer operation is 13-14A
for longer period of time in EU we have BLUE (1phase) or RED (3phase) sockets - and there are two of each (small 16A) or little larger 32A

 

[Bodo]

The plug is not household shuko plug.

Can we see a mains plug?

 

[OpaTsupa]

Can we see a mains plug?

I was referring to this:

 

[Bodo]

Yellow is likely the DC connector for the bike.

Red is mains, but possibly only distribution to the chargers. ~9x 6.6kW is quite some power draw

 

[Bodo]

from some facebook group(not official)
6,6kW external chargers for track fast charging

View attachment 15130

Interesting text from that fb post translated:

​

Stark tests fast chargers during this year's Gotland Grand National ️
Several of you may have seen that you have been given the "choice" to charge up to 6.6kW on your own bike.
This is a temporary software that has been rolled out that gives riders on Gotland the opportunity to fast charge during the race with dedicated chargers from Stark Future.
Stark is here with a pit-stop depot for all athletes at Stark
You will not get 6.6kW out of the original charger even if it says so on the display.

(red is my highlights)

So,

• Stark Future rolled this feature out only for the Gotland Grand National?
• the bikes are physically capable of accepting 6.6kW
• the software is capable to adjust the range up to 6.6kW

When do we get an adapter cable to parallel two 3.3kW chargers for fast charging?

 

[szczur333]

View attachment 15135
Yellow is likely the DC connector for the bike.

Red is mains, but possibly only distribution to the chargers. ~9x 6.6kW is quite some power draw

red is probably 32A 3 phase (22kW max) so 3 chargers connected to one connector

 

[drehwurm68]

Today I finally got to measure the stock charger with an amperage clamp meter on the AC side. Bike (EX) was at 60% when I started charging with 1kW raising the power to 6.6kW in 0.5kW steps in the app. Amperage would top out at 15.6A at around 3.5kW and then stay CONSTANT even though the Varg app was showing kW numbers all the way up to 6.6kW. So I hope that finally puts the myth to rest that the stock charger can deliver more than the 3.3kW it is specified for!

Michael

 

[Karinshi]

Today I finally got to measure the stock charger with an amperage clamp meter on the AC side. Bike (EX) was at 60% when I started charging with 1kW raising the power to 6.6kW in 0.5kW steps in the app. Amperage would top out at 15.6A at around 3.5kW and then stay CONSTANT even though the Varg app was showing kW numbers all the way up to 6.6kW. So I hope that finally puts the myth to rest that the stock charger can deliver more than the 3.3kW it is specified for!

Michael

is not important that the screen shows 6.6kw on the power setting, but if it says that below the SOC number, on the "current power" or something like that i think its a little concerning, that number should be legit and real if is really reading the power correctly

 

[drehwurm68]

is not important that the screen shows 6.6kw on the power setting,

I know, that's the # I was referring to - the actual charging current.

Michael

 

[Karinshi]

I know, that's the # I was referring to - the actual charging current.

Michael

thats sad... bad software programming

 

[Erwin P]

In mine (MX1.0) it does seem to work correctly. I can adjust it to 6,6 but it will not have an actual charge above 3.2.