Rebuilding my 4s 120A HIGH discharge pack with LifePO4 cells (4s10p 12v)

My old pack that i use for spot-welding had failed and I am rebuilding it and improving it with brand new A123 18650 lifepo4 cells! Enjoy
Nickel Strip: ebay.us/g9wEoQ
XT60 connectors: ebay.us/8r81Ox
Anderson Connector: ebay.us/balhvF

[@juanhernandez1238215]

Hi there good video, I have a question, do u may have a video showing how u made ur spot welder ?

[@DIYwithBatteries]

We're on the same test but me with 3s 8p pack. 😃

[@sideproject4028]

3s could work in a lot of applications!

[@wobbleszo]

Mildly concerned at the small size of the soldering iron and what looks like cold solder joints. I am also concerned about your lack of a BMS for the pack.

[@ericklein5097]

Same. Getting a 200W iron made a world of difference