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April 24th, 2007, 00:28 | #1 |
batteries...
most individual batterys have 1.2volts. So in a 9.6v battery pack there are 8 1.2volt batterys cells. Are there any individual batteys with more than 1.2 volts that i could use to make a larger pack?
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April 24th, 2007, 00:34 | #2 |
definately not NiCd or NiMh.
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April 24th, 2007, 16:54 | #3 |
LiIo or LiPo but there are other issues, google it or search here on ASC.
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April 24th, 2007, 17:03 | #4 |
Battery FAQ
There is only 1.2v, 3.0v and 3.6v in rechargeable cells. Nickel based are 1.2v (Ni-Mh and Ni-Cd), Li-ion are 3.0v and Li-Po are 3.6v. You can't mix battery types, unless you really don't like your fingers...might lose them in the process... |
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April 25th, 2007, 03:14 | #5 |
Sorry, just a slight correction, Li-Po Batteries are 3.7V, but that's somewhat ignorable, because after a full charge they are 4.2-4.3 and near the end of their charge they go all the way down to 3.3V.
At ~3.3 better Li-Po batts have a cut off that doesn't allow them to discharge furthur so as to not damage the battery. Your typical AEG motor can handle up to 15V. And to answer your question, individual cells are available. You would find them at electronic component supplies. I believe Radio Shack may hold them? Check their website, I doubt they have Li-Po individual cells though.
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April 25th, 2007, 03:53 | #6 |
There is no loose cells at Radio shack.
You can look at an electronic surplus store, or go in any hobbyshop around you. They carry them. Most high level Li-Po packs don't have any limiter pre-built. This is because the cut-off usually only allow 10A to flow, so you lose all the power you gained from high quality, high rate packs. If you are not very well equiped, stay clear of Li-Po. I use some, but the maintenance and care you must observe is extreme. Not for general public. |
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May 8th, 2007, 02:22 | #7 |
Say I got a few Li-ions of Li-Po's, how esy would it be to wire them up into a battery for my gun?
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May 8th, 2007, 04:02 | #8 |
You probably meant how hard it would be...
First you need cells that are all the same capacity, rating and age. Second, you need high rate cells. Li-ion cells are extremely expensive at rates high enought to be used in airsoft. Li-Po cells will vary from 40-70$ per cell, depending on capacity and rating. You need at least 15C for stock gun, but best with 20C (20 time the capacity, so a 1800mAh at 20C is able to deliver 36000mA, so 36A continuous). Next, you must not heat the pack enought for it to become too hot to hold. I usually weld my packs having them in my hands, so I know when to stop and let them cool down. And as I said, you need the right equipment. First of all is a charger that can charge this specific chemestry, but you also need good quality wire, tin and soldering iron. You will need some heat shrinking tube too, tape could do the job for testing, but better isolate it fr real before having this in your gun. |
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