How to fix and splice large battery cables and wires using solder and crimp

Simple way to make a permanent splice without removing cable.
Copper terminal
Solder
Dielectric grease
plastic zip ties
black electrical tape

[Bueno-Fabrication-Tuning]

Thanks for creating a video straight to the point.

[philliptaylor]

Tune in next week when you will be doing this over again.

[captainobvious]

I've done this too, but using my lug crimping tool with copper tubing over the wire and then heat shrinking it. You can't readily find C110 copper in tubing to make large butt connectors like that so you have to use the C122 like in Home Depot, but if you lap joint the wire it is fine. I've high current tested a couple of joints and they are just as cold as the cable.

Remember when using solder for high current joints that it is there only to hold physical connection, if you hold two wires together and solder them, most of the current is going through the solder and it will have high resistance and heat and will fail. I only solder circuit boards and never use it with power connections.

I would say this joint is okay and will most likely last, the wire is probably loosely contained inside the butt connector, albeit glued in place with the solder, most of the current will probably go between the two wires through the solder and so will be a point of resistance, but I would go by the experience of this person doing this that it probably isn't an issue. My perfectionist way is to crimp a single piece of tubing over the joint in three places - over the lap joint and on the whole of each wire.

[ethanrosnow]

You can do this in a pinch but it can cause electrical fires

[foxtrot]

Wow, this will corrode within weeks and come apart. NOT the way to do this...

[MoltenSamurai]

Need an update video, is this still going strong?