How to Modify an Alternator for Charging AND Welding

Published at : 23 Dec 2025

In this video, I outline the steps that I went through to successfully modify one alternator to charge and weld for emergency trail repairs. This is one of my favorite modifications yet. Thanks for following along! Please consider subscribing if this is interesting/useful to you! *Do not try at home!

Parts List:

Alternator: AD244

Rectifier ($27): https://amzn.to/4dCwmK7

Solenoid ($20): https://amzn.to/3ZVKlr5

DPDT Switch ($9): https://amzn.to/3ZRQTqT

Heat Sink ($8): https://amzn.to/3YecFUx

Thermal Paste ($8): https://amzn.to/3ZRR0mj

*Optional:

Hand throttle ($50): https://amzn.to/3ZTFbfo

Electrode Holder ($25): https://amzn.to/4duP1HG

Welding Dinse ($8): https://amzn.to/3ZTpTr4

120 Volt Outlet ($17): https://amzn.to/4dCwCsz

I also used 2 awg jumper cables from Harbor Freight for the leads.

#welding #alternator #lsswap