BOSS LEVEL CUSTOM SPOT WELDER

Batteries, Chargers, and Battery Management Systems.
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izeman
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Re: BOSS LEVEL CUSTOM SPOT WELDER

Post by izeman » Jan 27, 2018 11:41 am

what do you think of those welds? those were made @4.5ms.
i think i will do some kind of cooling mod as well. i can't make more than 50 welds before it hits it's shut off temperature. and regular cooling takes more time than i need to cut the next nickle strip in shape.
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rojitor
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Re: BOSS LEVEL CUSTOM SPOT WELDER

Post by rojitor » Jan 27, 2018 2:15 pm

They look perfect to me. Did you test those times? If they are good it is perfect. The cooling mod is recommended or a must depending on the behaviour of your machine, weather.... if you can't go any further than 50 welds you should do it. It is very easy and cheap to do. I never have to stop since I did it. My machine is always under 50°

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Re: BOSS LEVEL CUSTOM SPOT WELDER

Post by bardbe » Feb 09, 2018 5:19 pm

Just received my welder. Looks very nice. No I'm gonna order battery from Hobbyking. Should I go for 60C or would 40C suffice? For capacity: How many welds approx on nickle strips will I get from a 4000mAh battery per charge?

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Re: BOSS LEVEL CUSTOM SPOT WELDER

Post by rojitor » Feb 09, 2018 6:27 pm

If the price difference is not too big I'd go for the 60c
With 4000 mah you can probably make a 10s 6p with one charge. I don't pay attention to that and Refuel the lipos as many times as needed.

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Re: BOSS LEVEL CUSTOM SPOT WELDER

Post by izeman » Feb 10, 2018 5:52 am

bardbe wrote:
Feb 09, 2018 5:19 pm
Just received my welder. Looks very nice. No I'm gonna order battery from Hobbyking. Should I go for 60C or would 40C suffice? For capacity: How many welds approx on nickle strips will I get from a 4000mAh battery per charge?
after the experience i made (read up some posts above), i'd get the biggest, highest C-rated battery you want to afford. it's better that way, than buying a new one in case you find out it's not working correctly.
i have the 20c 15.000mAh now and it works great - this would match the 4000mAh 60C type somehow regarding max current output.

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Re: BOSS LEVEL CUSTOM SPOT WELDER

Post by jonyjoe303 » Feb 11, 2018 1:03 pm

"i think i will do some kind of cooling mod as well. i can't make more than 50 welds before it hits it's shut off temperature. and regular cooling takes more time than i need to cut the next nickle strip in shape."

In the picture if those are your probe cables they look like "audio type copper clad" wires, I had similar and they didnt transmit the full amperage to the tabs. To compensate you have to increase the power of the welder which is making it overheat and probably making the wires hot.
Using the 6 gauge pure copper welding cables for the probes will let you reduce the power output and probably you wont need a cooling fan. Since switching to pure copper wire I can work nonstop, no fan required, wires barely get warm. i was able to do an 80 cell pack in one sitting, and could have kept going if I needed to.
I read a comment that thicker gauge wire on the probes will damage the fets, if anything it might be beneficial since you will be using lower power rating to get the same results. With high amps, thicker gauge pure copper wire is always better, only drawback is that its more expensive going that way.

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