making battery cables....crimp or solder?

That precisely is the reason I crimp every electrical component. In the marine industry, where I worked for years, soldered connections are not allowed on boats because it creates brittle connections that can fail, and the solder itself can corrode the wire. Interesting to hear the aviation field thinks likewise.

But if a person is good at soldering and prefer that method, lots of people do it successfully with good results. But care has to be taken to avoid cold solder connections.

Don

 

I trust the airforce have tried out different
ways and used the best
In a car a lost conection mostly just stop the car
A little more critical to lose a conection doing 2 mach
in a jetfighter
Before i worked there i trusted only soldering
but when i think about it i have never had problem
with a correct crimped conection but with some
correct soldered not many but some

Incorrect crimping and solderings i had alot trouble with

 

Other than the 'flow' of the solder away from the joint, under the insulation, and causing a hard spot in the wire right next to the connection when there's too much heat, there's the possibility of not using enough heat and making a cold solder joint. This results in a poor mechanical connection, looseness at the joint, increased electrical resistance, voltage drop, and a hot spot in the wire.

Then there's the issue of flux. A well done solder joint needs to have flux applied to the wire to encourage the solder to flow. Problem is, the flux is corrosive to the solder joint. Not a problem when soldering on a circuit board, because the flux can be brushed off. Hard to brush off solder inside a large gauge electrical connector.