Stark mobile charger is out !

Interesting text from that fb post translated:

View attachment 15136


(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?
Thanks, that explains why they have not communicated about this.
Funny that they update all bikes just to try something new on a few customers bikes at Gotland.
 
Thanks, that explains why they have not communicated about this.
Funny that they update all bikes just to try something new on a few customers bikes at Gotland.
Not just that but that the app auto-updates without notice or user consent.
Isn't that what "Beta" versions and testers are for?
In any case they will need to correct the wrong display of current charging power.

While they are at it they should add the time until full charge estimate like the phone charging has.
 
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.

No, it's pretty clear and impossible.

screencapture-mail-google-mail-u-0-2025-10-27-07_58_05.png
 
Weird, as mentioned earlier the maths don't line up but the claim is still here, 3.3 kWh in 82 min is 4.51 kWh, that's 69% of 6.5 kWh MX1 battery (63% of 7.2 kWh MX1.2/EX battery).

That would work for 20-80% but that's definitely not what's written here.

IF (pretty big if) by 16 A max their "3.3 kWh" portable charger could in fact provide 16 A x 220 V = 3.52 kWh, then that would be 74% of the 6.5 kWh battery (67% of 7.2 kWh battery) in 82 min.

These are interesting numbers in themselves, don't understand how they came up with this 0-80% in 82 min, overselling is not good.

It's also bad practice not to specify if these claims are supposed to apply to the 6.5 or 7.2 kWh battery. One can only assume "riders on the move" would be EX or SM riders with 7.2 kWh battery.
 
I guess the 0-80 really meant 20-80 wich is a far more common used number.
Most likely explanation however it's really written 0-80% all over the place.
Someone should definitely be checking such claims before they are made public.
 
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
what was voltage with this 15,6A? I am wondering if you get for example 210-215V and 240-245V this will be the same number
 
Hi,

The spezial 6.6kW charger would be however interesting. I have a power generator with 5.5kW constant power on one phase. Connector is a CEE 32A with one phase. Would be great to use it for faster charging at the track. Any information if this is on the roadmap from stark?

Thanks
 
About that fast charger, read the description. This could be an incoming feature by Stark supporting their riders and customers at selected events?

 
Could somebody please check if you can set the charging power at low settings: 0.3 - 1.0 kW?

It seems to me that my charger is pushing full power regardless of the setting in the app. Including the "slow" setting.

This only happens after the recent Stark experiment. Before I could set any value and the charging speed would be corresponding.
 
Could somebody please check if you can set the charging power at low settings: 0.3 - 1.0 kW?

It seems to me that my charger is pushing full power regardless of the setting in the app. Including the "slow" setting.

This only happens after the recent Stark experiment. Before I could set any value and the charging speed would be corresponding.
This happened to me last week, you just gotta reboot the phone and the bike multiple times and it will work, it took me a good 20min to get it fixed
 
This happened to me last week, you just gotta reboot the phone and the bike multiple times and it will work, it took me a good 20min to get it fixed
Thanks. I'm topped up, but I'll check later today.

Stark worries about skid plates but not that their messed app can push maximal power through the charging circuit without control.
[it's still showing 6.6kW by the way]
 
I think I'll need one of these adapters Schuko - Type 2

Screenshot_20251228_192132.png

There's charging stations around with integrated charge cable, and some have a Type 2 socket. I understand that the cable plug pictured will not make proper contact when connected to a charge cable, as the body is too long for the contacts to engage.

1766946652562.png
This adapter is shorter, and doesn't have the locking recess, and should fit a charging cable. Though, when used in a socket, and the lock tries to engage (but can't), will it still charge?

Is there an adapter that I can stick into both, Type 2 charging cables and charging post sockets?
 
I think I'll need one of these adapters Schuko - Type 2
This doesn't seem to be as easy as hoped as many of the cheap Chinese adapters will not work with the public charging stations in Europe due to insufficient communication. There are some higher priced adapters +100€ that work well, but are bulky. Best option seems to build your own which is pretty trivial with this board doing the communication:


Just choose the adapter housing of your choice and fit the board in there.

Is there an adapter that I can stick into both, Type 2 charging cables and charging post sockets?
From what I've read so far that's not officially possibly. Might be doable with a hack, but I'm not sure I'd risk that ...

Michael
 
I think I'll need one of these adapters Schuko - Type 2

View attachment 15661

There's charging stations around with integrated charge cable, and some have a Type 2 socket. I understand that the cable plug pictured will not make proper contact when connected to a charge cable, as the body is too long for the contacts to engage.

View attachment 15662
This adapter is shorter, and doesn't have the locking recess, and should fit a charging cable. Though, when used in a socket, and the lock tries to engage (but can't), will it still charge?

Is there an adapter that I can stick into both, Type 2 charging cables and charging post sockets?
I tested this adapter and it does not work. What you need instead is an adapter with two switches (see incl picture).


Switch 1 signals to the charging station that a vehicle is connected. Once that connection is recognized, Switch 2 is used to trigger the relay, which then enables the charging power. Adaptor in the picture works.

Scherm­afbeelding 2025-12-28 om 20.12.59.png

Scherm­afbeelding 2025-12-02 om 15.59.38.png
 
If I can find an adapter to charge out of a public charging station (here in the US) it would be a game changer for most of us. Here in western Colorado/Utah there seems to be more charging stations coming online. It would enable a guy to do some amazing loops on his EX without range anxiety (and I'd sell my 350 EXC in a heartbeat )!!
 
From what I've read so far that's not officially possibly. Might be doable with a hack, but I'm not sure I'd risk that ...
I've had a deeper look into this (but not read the standards): I think it has to do with the locking the cable during charge to avoid arcing when unmating under load to protect the contacts from wear.

Thus, the charging station without cable has a socket that expects to lock a cable, and the charging station with cable expects a socket that locks:
1767001832383.png
blue: cable connector with deeply recessed pins and notches for mechanical lock; black: socket with locking mechanism (hidden in housing) and pins closer to front

Now, when you attach the blue connector to a cable coming from a charging station, one or more pins won't engage due to the recess, and nothing happens. That's where the hack starts:

Those cheap adapters come in long or short
1767002244328.png
The left one is shorter; allowing the contacts to engage - it emulates the socket on the top picture; at least an electrical connection is ensured (that's before having to use the aforementioned circuitry to convince the charging station to start giving energy). Apparently, few charging stations expect to engage the lock and have sensors when it doesn't, thus giving no energy when this hack is used.

There's a video sequence where this hack is applied; it uses the longer expensive adapter (shown in the Stark pics/videos) shortened with a saw Hack application (starts at 7:30)

The comfort of carrying only one adapter for when you not know if you end up at a charging station with or without cable attached circumvents the locking feature, which is meant to be an additional protection against arcing (preventing vandalism or cable theft is just a side feature).

Understandably, the charging station owner wants to protect their contacts against wear which is not that much of an issue after two or three arcs, but certainly after dozens: the electrical connection gets a higher resistance and heats up. At some point, pulling 6.6Kw over the worn contact for longer will heat up the connector pretty badly causing possibly immense damage. Many charging station T&Cs include a ban on any sort of adapter or extension (mentioned in the vid above).

That said, using the Stark portable charger will always allow to unmate the connection under load since its mains plug does not have a locking provision - using an adapter or not.
 
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