Building a fast 18650 DIYPowerwall 80P battery using a KWeld Spotwelder

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Amaizing! Thak you for sharing!

This legit couldnt of come at a better time lol, love the new layout :)

What a battary like that worth to build in total cost very interesting

That is one awesome setup. You my friend, rule.

I like your work mate! - would love some advice at some stage considering lithium cells. My current diy batteries revolve around super caps paired with small solar panels to pulse warm water through my tomato grow beds. But have issues in the morning when the solar charge controller no longer recognises my super cap cell below "X" voltage. Super caps drop volts overnight unfortunately

Great video, what info lead you to replacing that bank of batterys, what information comes from your system that caused you to do this or are you pulling cells out and replacing them based on cycle count ect... Sorry I should have watched the last few minutes before commenting, you did explain some why you chose that cell to replace.

Love the layout and the final look, and how easy is to connect after each battery set with the others. Still, if after a while single 18650 cells are failing and you need to replace them, what to do? Do you break apart the whole set?

Love your videos. One question I have with all these diy powerwalls is how do you control discharge of your batteries when connected to the grid? So if you are connected to grid, batteries are fully charge and you want to pull power from your batteries instead of grid is this controlled through your charge controller/inverter? I can't picture how the output of everything is being managed. How do you push only to supply house load vs supplying house and grid? Seems that powerwalls 2 has the gateway that helps manage all that but there's probably a bunch of magic smoke in there. Ha this might be too much for a simple message. Thanks for your time.

Awesome setup. Humidity has not affected your outdoor setup at all?

Hi HB I believe You common in one of your videos The K Weld electrodes get hot before you finish one side to of pack as I have a K weld to I Considering getting an extra pair of electrodes When one gets hot you can Alternate let the other ones cool just have 2 p Pair hooked up all the time lol

Looking to start a cartridge style wall, where do you get your supplies from? Not trying to "poach" any leads in SA or QLD would be appreciated! Medical packs etc etc..

Hi. I am from Austria and in the next days i will build my new powerwall 4.0 from new chinese 18650 (about 2000€) for 1450 pcs. I had a powerwall up and running, but i had some issues with the soldering points in the old one. I used 5 amps fusewire and sold it to the batteries. But over the time some of these solderingspoints starts to rust and i think i have lost (a good) connection. So i bought your spotwelder and use your promoted sheet of metal fuses and i still dont know how to connect the connectors. Should i solder them (like in your video) and then use protection paint (teslanol) to prevent corrosion or is there a better way? Please help. Thx Markus

Looks great! I had a concern with the fuses holding the pack together. I have been using zip ties around the buss bars on the conventional packs. Been trying to find a way to also do that on this style.

Very nice!! Only one thing I would do differently. I would first soldered the copper buses and then spot welding. This way there is no heat transfer to the batteries :-)

I hit the like button thanks for sharing your video I'm here to support your channel as always I can't wait to share my battery build video coming soon with you I will post in the Facebook group

Hello can you please tell me how many nickel strips in 0.20 you have To accumulate for resistance for 20s10p battery with Samsung 25r cell. I have a nominal 100A bms 200A pic . For the power of amps. so that it will hold the shock well knowing if is necessary for example doubled or tripled the nickel strips.

Awesome, perfect timing. Think I need to get myself some busbars

This looks very nice and looks great, now what happens when the cell in the middle needs replaced?

heya so you didn't balance it for 6 or more or more month's but the batrium with the longones does that or not