JP spot welder
- Thread starter riba2233
- Start date
cwah
100 MW
But didn't you say we can use lead acid from 350A to 1200A? Lots lf lead battery only go to 450A max
tomjasz
1 GW
Are you sold out already?
atomek1000
100 W
Is this batch ready? We are already waiting long 
tomjasz
1 GW
I'll sell you a POS Sunnko 709A that failed after a few days. You can have it in a matter of days. including repair parts, no customer service and overpriced welder pens.<wink>atomek1000 said:Is this batch ready? We are already waiting long
Kepler
10 MW
Got cells, got nickel, got a new project. All i need now is just one more thing. Getting excited now. 
cwah
100 MW
riba2233 said:
do you mean something like this can pull 2000A for 20ms?
http://www.amazon.co.uk/RAC-NNHP082-Hilka-Jump-Starter/dp/B00FB7LTO8/ref=sr_1_1?&ie=UTF8&qid=1439024435&sr=8-1&keywords=car+starter
also, have you ever tried with lithium?
Allex
100 MW
Lithium sure, if you can solder those god damn aluminum tabs
https://endless-sphere.com/forums/viewtopic.php?f=31&t=68865&start=175#p1058175
https://endless-sphere.com/forums/viewtopic.php?f=31&t=68865&start=175#p1058175
atomek1000
100 W
Allex, did your connectors get hot when welding? I suppose there is a lot of current from these lipos.
atomek1000 said:
I doubt, they look really well sized for the application
cwah said:
Probably not, I can get 2200 A from two 45 Ah batteries, and each weights 11 kg. So I would say you need 10 kg per 1000 A, and that thing from the link is only 3.4 kg.
Lithium can work, but if you want it to be small, it has to be best, like a123 or nanotech lipo like allex used. But it's more expensive than lead.
If you are happy with welding 0.15 mm nickel, just buy small 45 ah battery, 11 kg, and that's it, no worry, and battery s pretty cheap.
ridethelightning
1 MW
- Joined
- Jul 21, 2013
- Messages
- 2,010
this is so cool
Allex
100 MW
Atomek, like riba said, they were properly sized, so after welding 40 cells the battery with the connectors and copper strings were luke warm at best.
tomjasz
1 GW
I have a Sunnkp 709A that died in the first few days. They sent me replacement parts and a new PCB. I thought I'd try and sell it but no one will pay the value of the welding pens and spare tips. SO the question. Will the pens for the 709A be acceptable for use with my new welder from you?
I have the Alumina copper welding needles to.
Diameter:
1.65
Brand Name:
SUNKKO
Material:
Copper / Copper Alloy
Length:
50mm
Rather than give the stuff away, recycling some of it would give me something back.
I have the Alumina copper welding needles to.
Diameter:
1.65
Brand Name:
SUNKKO
Material:
Copper / Copper Alloy
Length:
50mm
Rather than give the stuff away, recycling some of it would give me something back.
Attachments
tomjasz
1 GW
I can easily make them work now that I look harder and think...
How is the shipping progress?
Best,
T
How is the shipping progress?
Best,
T
tomjasz
1 GW
WOOHOO!!
If you search eBay for "spot welding pen", you'll see an assortment but they all looked pretty expensive.
Some have very amusing English translations in the description.
I like the idea of having the tips offset on the shaft so they are closer to each other. Some of the 'pens' had both electrodes on the same handle, which looks handy but I think it would be very hard to get the pressure even on both electrodes unless it was spring loaded or something.
Some have very amusing English translations in the description.
I like the idea of having the tips offset on the shaft so they are closer to each other. Some of the 'pens' had both electrodes on the same handle, which looks handy but I think it would be very hard to get the pressure even on both electrodes unless it was spring loaded or something.
markz
100 TW
Why cant there be an adapter for 120ac outlet to 12V or 24V to whatever amperage you need?
The amperage is too much probably.
Its easy to get to 12V or 24V, the wall outlet will pull what 15A. Thats the issue!
The amperage is too much probably.
Its easy to get to 12V or 24V, the wall outlet will pull what 15A. Thats the issue!
