you should never solder directly to these cells, there is no better or worse way, just don't do it.
But I think it is still better to solder with powerful soldering iron with big tip than heating cells with small soldering iron and bad technique. It is hard to weld thick copper strip, so I have been soldering all my high current battery packs.you should never solder directly to these cells, there is no better or worse way, just don't do it.
Is soldering batteries ok in your opinion?
Soldering is acceptable with good procedure. It's becoming a modern myth to say never solder 18650s. Much more can go wrong with spot welding actually until things are dialed in perfectly. Still, spot welding is much more heat in a smaller area.
trip, so I have been soldering all my high current battery packs
But I think it is still better to solder with powerful soldering iron with big tip than heating cells with small soldering iron and bad technique. It is hard to weld thick copper strip, so I have been soldering all my high current battery packs.
Like I said - Modern myth that so many have come to believe. (Site some manufacturer research please that says damage occurs form soldering.) The reason spot welders are used by manufacturers is economics. They're fast but not very safe for the novice. We used to endlessly calibrate our spot welders for time, amps and duration and still had issues of repeatability.
Like I said - Modern myth that so many have come to believe. (Site some manufacturer research please that says damage occurs form soldering.) The reason spot welders are used by manufacturers is economics. They're fast but not very safe for the novice. We used to endlessly calibrate our spot welders for time, amps and duration and still had issues of repeatability.
Actually we had 13 of them. The cheapest being around $25,000 with the larger production ones costing around $70,000 each. I was operations manager for 13 years.Sounds like you have the wrong spot welder.
So then of course you know it all including if you spot weld you need to be x-rayed before you can get an MRI in a hospital.we have been accumulating knowledge on this topic for over 10 years and now
What cells you then recommend?Y'all know neither of these processes would be necessary if you're weren't stuck on using toy cells, right?
Just because you only know how to build things out of Lego doesn't mean you should build your house with it.
My favorites to work with so far are prismatic cells in PHEV2 format. Those range from mid 20s Ah range to low 50s Ah. Even the high energy ones pack a lot of power, and the high power ones can push mind boggling amps. Almost all of them have some kind of threaded terminals that make building a pack a cinch.What cells you then recommend?
Actually we had 13 of them. The cheapest being around $25,000 with the larger production ones costing around $70,000 each. I was operations manager for 13 years.
So then of course you know it all including if you spot weld you need to be x-rayed before you can get an MRI in a hospital.
Y'all know neither of these processes would be necessary if you're weren't stuck on using toy cells, right?
Just because you only know how to build things out of Lego doesn't mean you should build your house with it.
Toy cells/vape cells/flashlight cells are only as good as their connections, which are total garbage compared to real copper bus bars fastened by bolts or studs. It doesn't matter what's inside the can, if you crippled it by the way you put your pack together.How can you call them toy cells, they are the best cells that exist and used in plenty of EV's in all sizes from bikes to cars (and some of the best ones). They are harder to build with than ones you linked ofc, but are better in every other way.
Toy cells/vape cells/flashlight cells are only as good as their connections, which are total garbage compared to real copper bus bars fastened by bolts or studs. It doesn't matter what's inside the can, if you crippled it by the way you put your pack together.
Ok sure but there are ways around it,
and it is certainly not fair calling them "toy cells" since they have the best tech in the world inside.
Laser welding? Ultrasound welding? Certainly nothing I've seen implemented around here. Every time someone says "30A cell", I have to fill in "with 5A connection".
Best tech is as best tech does. What toy cells seem to be best at is dying younger than other types.
Actually we had 13 of them. The cheapest being around $25,000 with the larger production ones costing around $70,000 each. I was operations manager for 13 years.
Dude - You really should broaden your horizons a bit. I'm not sure what your problem is but don't be ignorant. Have you never worked in manufacturing? From stainless medical equipment to car frame sub-assemblies there's allot of spot welding that goes on and that's where I worked for a part of my manufacturing career. From almost foil-like material to 12 ga. sheet was what we did especially stainless steel. Production water-cooled spot-welding machines with auto-load/unload and camera inspection push $100,000.I really don't know where people come up with shit like this
The union made by a proficient spot welder has lower electrical resistance than soldering ... making it ideal for high current applications. Spot welded connections are generally more mechanically resistant, so they are safer to use in ebike DIY battery packs.
Pros and Cons of Soldering vs Spot Welding Lithium Cells ... Spot Welding Vs Soldering Lithium Cells - Cell Saviors ...
Dude - You really should broaden your horizons a bit. I'm not sure what your problem is but don't be ignorant. Have you never worked in manufacturing? From stainless medical equipment to car frame sub-assemblies there's allot of spot welding that goes on and that's where I worked for a part of my manufacturing career. From almost foil-like material to 12 ga. sheet was what we did especially stainless steel. Production water-cooled spot-welding machines with auto-load/unload and camera inspection push $100,000.
@add - ...and x-rays before MRI? It's standard practice in this country for any metal worker or welder. The hospital questionnaire doesn't exempt DIYers. It's on every MRI consent form I imagine. Was on both of the ones I signed.
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The MRI for Metal Workers: Hazards and Solutions - Precise Imaging
Even tiny particles of metal on a patient's skin can create health risks during MRI scans. Here's what metal workers need to know.www.precisemri.com
Thank you! As I said, soldering is acceptable, I never said it was preferrable. For those that read the article there is very little negative stated about solder connections.