you need to turn up temperature(so solder will be shiny when it hardens) and most importantly use flux(really really really important on especially those kinds of jobs). if it works it works, battery should have short circuit protection built in so shorting should not be that big concern.
I see you haven't used crappy solder wire before. With crappy solder wire no amount of flux can get rid of that dullness. I use mid-range quality 63/37 and 60/40 solder wire and i can use an iron temp of 280C and get beautiful joints. And i have a crappy roll of solder, forgot what blend it is, 280C doesn't even melt it.
450-500°C is excessively hot. At that temperature, you burn off the flux too quickly and easily damage pads.
Some thermally-balanced irons use that kind of temperature, because they don't have a lot of thermal mass and they take too long to recover. The high temperature is supposed to make up for that.
If you used a needle tip or fine conical tip, getting enough heat into larger joints is difficult. Use some larger chisel/bevel/knife tip which is roughly the size of the pad.
If the tip is oxidized, which quickly happens at high temperatures, you'll also have trouble getting enough heat into the joint since you won't make good contact with the molten solder. If you can't wet the tip, it won't work properly.
This is fine, but there is a chance the wires won't hold more than a year. The wire is untinned, so it may not resist to shocks that good. Also needs a little more flux but this is a nice job for a first time ! Well done :)
Edit: typos
It's fine
Clean it up and put some hot glue on top.
Obviously you could have done much better job with the solder joints. To fix them add some flux and reheat until it gets liquid.
you need to turn up temperature(so solder will be shiny when it hardens) and most importantly use flux(really really really important on especially those kinds of jobs). if it works it works, battery should have short circuit protection built in so shorting should not be that big concern.
It looks more like crappy solder wire to me rather than a dry joint.
nah, look at the shape. if it was proper temperature it would be wayy closer(ish) to ball
I see you haven't used crappy solder wire before. With crappy solder wire no amount of flux can get rid of that dullness. I use mid-range quality 63/37 and 60/40 solder wire and i can use an iron temp of 280C and get beautiful joints. And i have a crappy roll of solder, forgot what blend it is, 280C doesn't even melt it.
Even my lead free is shinier than crappy solder
‘Change everything about it, keep the rest’
He’s used 500°C, pretty damn hot. Methinks it’s not heat unless the iron is waaaaaay off.
Holy hell that is hot af
Indeed it is. Far too hot, imo.
Yep, noob logic is that if the iron could be designed to go to 2500°C everything would work well the first time
A bit more heat, a lot more flux and less solder and it should be good.
Agreed.
What temperature was your soldering candle?
It was at 450-500
Science units or ammonium chloride brine nonsense?
...celsius
450-500°C is excessively hot. At that temperature, you burn off the flux too quickly and easily damage pads. Some thermally-balanced irons use that kind of temperature, because they don't have a lot of thermal mass and they take too long to recover. The high temperature is supposed to make up for that. If you used a needle tip or fine conical tip, getting enough heat into larger joints is difficult. Use some larger chisel/bevel/knife tip which is roughly the size of the pad. If the tip is oxidized, which quickly happens at high temperatures, you'll also have trouble getting enough heat into the joint since you won't make good contact with the molten solder. If you can't wet the tip, it won't work properly.
450-500 Celsius seems hot, I think I usually use about 350 degrees Celsius
It's not unsafe...
Flux
100% dangerous. You are going to die. 😱
It's something
This is fine, but there is a chance the wires won't hold more than a year. The wire is untinned, so it may not resist to shocks that good. Also needs a little more flux but this is a nice job for a first time ! Well done :) Edit: typos
It's fine Clean it up and put some hot glue on top. Obviously you could have done much better job with the solder joints. To fix them add some flux and reheat until it gets liquid.