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Old 12-20-2006, 12:54 AM   #16
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Quote:
Originally Posted by Electro-MAX RC
question on soldering those batteries,
do you need to prep the surface of the cells to get the solder to flow and stick? it dremmel or ruff up the surface of the cells, and pre-tin? i can never get mine to flow nicely with a minimal amount of solder.
i always do this if soldering batteries :
1. i use dremmel the surface of the cells and pre tin with flux.
2. then, i put a small amount solder, make sure the solder is perfectly melt, take the solder with iron, push the "turbo" button on the iron about 5 second then put it on the cells.
3. do the same thing to those battery bars.
4. solder those bars to the cells...
make sure you do it with quick & clean....
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Old 12-20-2006, 09:53 AM   #17
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Oh God those are beautiful solders
Victor

Quote:
Originally Posted by SPC
Assemble the cells side-x-side using a battery jig and a sufficient soldering iron with a 3/8" chisel tip. With practice you can obtain solder joint like these.
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Old 12-20-2006, 12:01 PM   #18
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Default Professional Soldering Jobs

Yes, pretty pretty, very nice solder joints, wish I could do the same.

With Pro-Match packs, they solder them for only $6.00 upcharge, including parts. Best solder joints I've ever seen, and poor joints = more power loss and heat on the joints. I'll never do them myself unless it was an emergency. (Or unless I can get technique like that guy, then maybe I would now and again just for fun).
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Old 12-22-2006, 07:06 AM   #19
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Quote:
Originally Posted by cyber3d
Oh God those are beautiful solders
Victor
Thank you!!!!!!!!!
The solder joints you see in my previous post are the final result of our soldering-assembly process. This process virtually eliminates heat related damage while providing incredibly efficient joints. After assembly all of our packs are tested with a full 6-amp charge followed by a 30-amp discharge. During the discharge cycle voltage readings are digitally recorded every 5 seconds and sent to a PC. The voltage discharge curve is examined on an EXCEL graph while comparing the pack's total mAh discharge capacity. Then and only then is the pack given a serial number and the data permanently stored in the PC. "HES Technology" cell zapping, accurate and honest individual cell numbers, great assembly and a very thorough testing procedure make for great SPC Racing packs!
We also offer similar testing for matched, loose cell packs using our "pack simulating tray." Using the same test parameters this testing verifies that matched loose cells work well together as a pack.
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Old 12-22-2006, 07:21 AM   #20
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SPC:
can you give us a guidance on solder temp, solder type, surface prep, flux/no flux? got get those nice results?
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Old 12-22-2006, 07:53 AM   #21
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Quote:
Originally Posted by Electro-MAX RC
SPC:
can you give us a guidance on solder temp, solder type, surface prep, flux/no flux? got get those nice results?
Much of our assembly process is not open to discussion, I hope you understand. However I will say similar looking solder joints can be obtained using an 80 watt iron with a 3/8" chisel tip and any good quality solder. We do not sand the cell surfaces (but we do prep them) and we use a good quality flux. Lastly, do not tin the cell ends or the battery bars.
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