Kingsong S22 126v Charger Output Adjustment
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- Опубліковано 23 сер 2024
- Please know that this has the potential of being very dangerous! You should not do this if you aren't comfortable or understand the risks involved. This is a fairly straight forward process with lots of room for catastrophic failure. I highly recommend doing this process over the course of several hours to let the capacitors lose their energy. Hopefully, you won't have to do this.
I made this video because my S22 only charged to about 124.5v. Since I heard of chargers not working or not being set correctly, I decided to ask those of higher knowledge than me for help and watched their own videos doing this process. After successfully adjusting the output to 126v, I started to assemble the charger back together. Upon doing so, something went wrong and the board short circuited and fried the board.
Marty provided an alternative way to adjust the charger with out disassembling it here • Adjusting the KingSong...
The main difference between that way and this way is that I directly measure the output of the charger whereas the other way relies on the wheel app.
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The fact that the consumer has to do these adjustments to get a properly functional product is a bit ridiculous. Big oversight by kingsong.
I just follow your tutorial and works PERFECT! Now my charger out 126.4V and all of the cells of my wheel are at max charge 4.2v. THX
I think this has to be maybe around 10 or 20 km more of range, I will test just today
And less battery life
@@romaniexo karen much?
to bad it ended this way. Sorry for your charger!
Its also to bad that the new charger types cant be measured just easy at the output plug (Its the same on the GW Master charger). This makes it more complicated. Otherwise just opening and screwing on the potentiometer would be enough with voltage meter pllugged into the charger plug. The need to put the whole thing apart is nerv wracking.
At least it has earthed housing . My sherman doesnt . But fixed .
Maybe replace loud fan on silent Noctua? What fan size needed?
And... why did you remove the entire pcb from the case?
To gain access to the output voltage. Other commenters said there is an easier way. Just read the comments. I only did what I was told at the time and wanted to document it.
@@FlyboyEUC alright, alright.... It's just that I facepalmed at the and like I haven't in a looong time :p
I have a brand new charger that seems to have just shorted out yesterday for no particular reason and I didn't even open it up. I just uploaded a couple videos showing the issue I'm having if anyone has any guesses please let me know in the comments! I will also update the videos with the fix once I solve the issue to help anyone else that has a similar problems in the future.
My current guess is the fan is too small for the charger and just shorted out.
This could be what happened here with your charger as well so you may have to upgrade your fan in order to bump up the voltage.
mine just broke down when I plugged it into AC. so I end up here.
@@dirkschelfhout6460 some suggested trying to reflow solder
why cant you get a voltage reading just on the plug?
If I understand your question, the charger doesn't output 126v until it makes a connection with the BMS of the wheel. You can definitely do that with other chargers though. These new chargers start charging about 5 seconds after being plugged in. The old ones start as soon as the pins come in contact.
@@FlyboyEUC thanks, you don't now what pins are positive and which are negative do you? Yes, i see #5 is positive.THANKS
1 and 2 positive, 4 and 5 negative
@@FlyboyEUC I thought you had the red probe lead (positive) on #5? Also super sorry about the charger at the end
I did have the red in the hole. Maybe that's why the voltage was negative when I measured it?
Why is that one spot the only spot to measure ground??? To access pot, you don't need to unscrew the whole board...must be better way of doing it...use app to do the measurements... It's a smart bms anyways...
The pot is easily accessible but then I can't measure the output. The app has been verified that it isn't an accurate representation of the voltage. Many have struggled to get their wheels read 126v when fully charged.
There may be other ways, but I don't know of any other way to measure output from the charger.
You should watch Marty’s video
That's why it's linked in the description. I made my video before his but waited for his to come out so I could include it. Many others have done this method successfully. I just had bad luck.
☹️ To bad about the end.
So bad your charger was only charging your wheel to... 24V (?!?!).... (0:10) 🤪
(edit: and no, you don't need to take everything apart, what a waste of time! and risk to electrocute yourself... the potentiometer is accessible after taking the lid off, and visible in your video - for the ground you measure it directly at the cable, no need the pad on the backside of the PCBA; moreover, measuring the voltage on the PCBA is wrong because you lose about 200mV for each ampere in that cable)
Haha. Oops. I meant 124v. Nice catch 👍🏼
Too dangerous. Not smart screwing with this Chinese made kife.