To remove the side panels, start at the end with a thin blade, once you get the end to pop up insert a screwdriver under the panel lengthwise and twist it back and forth to pop the clips free.
Two issues with this device: 1) The included USB-A to USB-C cable does not allow this device to draw more than 0,34A from a charger, making it useless. I don't know why they even include it. You need to use your own quality cable to get the device to draw 1,9A from the charger. 2) In my case the device didn't stop charging at all. The battery voltage reached 4,33V at which point I manually disconnected it from the charger. Who knows what would have happened if I relied on it to stop by itself and left the room!
Charging slows down around 4.2 and terminates at 4.35 V. Nothing wrong with charging slowly and/or stopping around 4V, it extends the life of the cells and is conducive to storage between uses. Like you, I tend to use a better cable, then chose a power supply that provides the type of current I want to charge with.
Is it possible to replace the lipo with 18650? Thank you for the teardown. The thing with aliexpress lipos, the cells degrade very quickly. I have a kerpu unit, and it just lost it's power after two battery builds.
You might want to use an XT90 for this, but there is no reason why you couldn't. Granted, I think it would be hard to find a battery that would deliver significantly more than the 1000A this is already capable of. Increasing the voltage will likely burn a lot of things out as this is only designed for one series cell.
Today, i pick up my FNIRSI SWM-10, Unfortunately after soldering test, when i plug in charger, something was wrong with charging system, the device goes down, and I can not restart them. Why me 😭. I will change it only on Tuesday.
Same thing happened to me. I Got a new welder after contacting the seller on Ali express. First they tried to get me to replace the pcb myself , but they changed their mind and sent me a brand new.
Thanks for this amazing teardown! There is some charging bug on my unit. If I discharge the battery and charge it, it will charge to 4.2V with regular CC/CV. But if reconnect charging cable or start charging from not empty, the battery is charged to 4.4V. Weird.
I've never discharged mine but it appears to charge to 4.4V. I assume the battery is a high voltage chemistry perhaps. It does seem to work better when charged to full.
It already struggles with welding 0.15mm nickel plated steel to 18650 batteries. In order to get a good weld you have to press lightly and not too hard, and keep the probes close to each other. This was the difference between it never working and working well enough.
No. In practice its not powerful enough to weld anything but 0.15 NiPlated steel :-( Also after round 20 Welds, you need to charge it again. Not very productive. It looks nice and can be good for some small battery, but its to week to building a bike battery!
Yes - Make sure to wait a long time, when the LED flashing color changes when doing this, as doing so before will lead to the device not booting. It is fully recoverable however it appears
@@WaschyNumber1 I'm not sure about Android but I believe you have to hold down the power button for a few seconds while plugging the device into the computer, then it shows up as a USB drive that you copy the firmware into. You then have to wait a few minutes until the flashing light changes color before trying to turn it off/on again.
I bought a FNIRSI SWM-10 while in China and I had to send it by sea to Australia. Can't take it on an airplane due to the powerbank feature (not allowed with checked-in luggage) and the spot welding feature (not allowed as carry-on).
To remove the side panels, start at the end with a thin blade, once you get the end to pop up insert a screwdriver under the panel lengthwise and twist it back and forth to pop the clips free.
The delivery strips in the box are nickel plated steel and its 10mm width x 1.03mm thick.
Two issues with this device:
1) The included USB-A to USB-C cable does not allow this device to draw more than 0,34A from a charger, making it useless. I don't know why they even include it. You need to use your own quality cable to get the device to draw 1,9A from the charger.
2) In my case the device didn't stop charging at all. The battery voltage reached 4,33V at which point I manually disconnected it from the charger. Who knows what would have happened if I relied on it to stop by itself and left the room!
Charging slows down around 4.2 and terminates at 4.35 V. Nothing wrong with charging slowly and/or stopping around 4V, it extends the life of the cells and is conducive to storage between uses. Like you, I tend to use a better cable, then chose a power supply that provides the type of current I want to charge with.
Are the batteries LiHv? when my unit is fully charged it charges to 4.35volts
Informative video.
Can you show, how to update to the latest firmware that available now at the fnirsi website? Thanks
What firmware is on the unit? I didn't see in the splash screen or menus.
Is it possible to replace the lipo with 18650? Thank you for the teardown. The thing with aliexpress lipos, the cells degrade very quickly. I have a kerpu unit, and it just lost it's power after two battery builds.
No, 18650s deliver too little power!
Why not a LTO
Could I remove the internal battery and install a wired TX60 connector to use an better external battery
You might want to use an XT90 for this, but there is no reason why you couldn't. Granted, I think it would be hard to find a battery that would deliver significantly more than the 1000A this is already capable of. Increasing the voltage will likely burn a lot of things out as this is only designed for one series cell.
Today, i pick up my FNIRSI SWM-10, Unfortunately after soldering test, when i plug in charger, something was wrong with charging system, the device goes down, and I can not restart them. Why me 😭. I will change it only on Tuesday.
Same thing happened to me. I Got a new welder after contacting the seller on Ali express. First they tried to get me to replace the pcb myself , but they changed their mind and sent me a brand new.
Thanks for this amazing teardown! There is some charging bug on my unit. If I discharge the battery and charge it, it will charge to 4.2V with regular CC/CV. But if reconnect charging cable or start charging from not empty, the battery is charged to 4.4V. Weird.
I've never discharged mine but it appears to charge to 4.4V. I assume the battery is a high voltage chemistry perhaps.
It does seem to work better when charged to full.
can weld 0.2mm - 0.25mm thickness nickel plate to battery. such as product description advertisements ?
If you play with settings the max is 0.2 pure nickel. Highest I recommend is 0.15 pure nickel.
It already struggles with welding 0.15mm nickel plated steel to 18650 batteries. In order to get a good weld you have to press lightly and not too hard, and keep the probes close to each other. This was the difference between it never working and working well enough.
No. In practice its not powerful enough to weld anything but 0.15 NiPlated steel :-( Also after round 20 Welds, you need to charge it again. Not very productive. It looks nice and can be good for some small battery, but its to week to building a bike battery!
You can update firmware through usb c, eliminates often problems with short circuit protection alert...
Yes - Make sure to wait a long time, when the LED flashing color changes when doing this, as doing so before will lead to the device not booting. It is fully recoverable however it appears
How does the firmware upgrade work 🤗 Does it work with android or PC and how, please? 🤔
@@WaschyNumber1 I'm not sure about Android but I believe you have to hold down the power button for a few seconds while plugging the device into the computer, then it shows up as a USB drive that you copy the firmware into. You then have to wait a few minutes until the flashing light changes color before trying to turn it off/on again.
@@liminalsunset thanks very much, wher do I get the firmware please and I hope its the official frome the manufacturer. 🤔
@@WaschyNumber1 Yes you can go to their website and go to the Downloads section where it will be in the welding tools section.
Good info Larry but please skip the music in the future.
I bought a FNIRSI SWM-10 while in China and I had to send it by sea to Australia. Can't take it on an airplane due to the powerbank feature (not allowed with checked-in luggage) and the spot welding feature (not allowed as carry-on).
On a commercial trip, it cannot be sent only by cargo plane.
🎉❤
those friggin fingernails........