People get passionate (and sometimes a bit mean) about battery pack construction techniques because of the safety risks of a poorly made pack.
Don’t be too hard on yourself, we all start somewhere. There are a ton of great examples of batteries in this thread and elsewhere on the forum, and it’s the details that really matter. Type of welder, wire gauge/strand count, wire jacket material, nickel width & thickness, weld heat, series connection amp capacity, cell selection, fish paper location etc etc. There is a reason people pay a lot of money for someone else to make a pack… it’s a steep learning curve that requires a lot of research and some specialized tools to make a great pack.
My first pack (2017) has a loooong list of things wrong with it and if I posted it here seriously I would be hammered with criticism (and rightly so).
But if we accept that we don’t know nearly as much as we think we do, and are OK being wrong we can learn from all the best techniques and come up with a safer pack.
My second pack was created after countless hours of research and modeled after many pictures I saved from this thread. It still had valid criticism and I revised what I could. Is it “pay me to make your pack” quality? No, but it will work fine for my own board… and the next one will be better still.
I’m certainly no anomaly. Skyart makes some of the best packs on the forum and he started by asking basic questions in this thread and trying out a lot of different techniques that he eventually abandoned for better techniques based on feedback.
Mistakes are how we learn, and the only real mistake is the one from which we learn nothing.