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Thread: how do i discharge 2/3a 9 cell packs?

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Old 01-31-2009, 10:45 PM   #1
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Default how do i discharge 2/3a 9 cell packs?

So i got some 9 cell packs coming i am going to break down and make into 7's.

My question is if my truck will only run 7 cells, how do i discharhe these before soldering up? Could i just rip them apart into 7's and tape them together for 1 drain? or is there a better way?
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Old 02-01-2009, 06:44 AM   #2
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Use an 1157 automotive bulb, attach a plug to match the plug on the pack. Watch it when the light dims down your done. Don't let the bulb go out completely though or the cells may reverse on you.

This is how I have done it, if someone else has something better lets both of us know.
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Old 02-01-2009, 02:40 PM   #3
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I don't feel it's necessary to discharge the cells, just to reconfigure the pack, or build a whole new one. They'll be fine.
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Old 02-01-2009, 03:55 PM   #4
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hmmm... so its okay to solder fully charged cells?
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Old 02-01-2009, 10:31 PM   #5
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Quote:
Originally Posted by Ryan33 View Post
hmmm... so its okay to solder fully charged cells?
Yes, but be certain that you use a good soldering iron with a large chisel tip. The larger the iron tip is, the more heat it will retain, and the quicker you can get off the cell. Stay on it too long, and you'll damage it.
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Old 02-01-2009, 11:08 PM   #6
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Quote:
Originally Posted by CreepyCrawl View Post
Yes, but be certain that you use a good soldering iron with a large chisel tip. The larger the iron tip is, the more heat it will retain, and the quicker you can get off the cell. Stay on it too long, and you'll damage it.
damn you got all my awnsers tonight eh?
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Old 02-01-2009, 11:12 PM   #7
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damn you got all my awnsers tonight eh?
Electronics thread is busy, and I'm always happy to help out if I can
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Old 02-01-2009, 11:14 PM   #8
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Thanks.
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Old 02-01-2009, 11:29 PM   #9
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Anytime...and good luck with your project.
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