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Dec 16, 2005, 06:29 PM
tic
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thunderscreech
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Any new NiMH high capacity/high discharge cells on the horizon?


Since it is still difficult to fly F5B with lipo, we are forced to use NiMH.. 220 amp territory.The GP-3700 cell was king of the hill until the IB-3800 came around... That was last March.. Anyone know of anything new and improved?
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Dec 16, 2005, 06:49 PM
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aeropal's Avatar
4200's
Dec 16, 2005, 06:59 PM
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IB4200's, I have two samples here and cells are coming next week I hope


thanks,
Steve
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Dec 16, 2005, 07:25 PM
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Image of cell


Here is the image

thanks,
Steve
Dec 16, 2005, 07:29 PM
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Another image


Notice dimple on negative end, should give the cell better voltage at high amps.
Dec 17, 2005, 03:37 AM
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davidleitch's Avatar
Steve

In the other thread you mentioned the IR and volts at 30 amps of these cells. To save a lot of trawling through old threads, what can you say about the performance of the 4200s compared to the 3800s at this stage?
Dec 17, 2005, 09:23 AM
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The two test samples were 1.220 and 1.215 at 30 amps. The runtime was 503 and 513. I am going to run them at 70 amps today, I expect them to do well. I was also told that the production cells will have more capacity as well.

thanks,
Steve
Dec 17, 2005, 09:33 AM
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Weights were 66.6g and 67.6g on these test samples
Dec 17, 2005, 10:05 AM
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Neil Stainton's Avatar
I'm hoping for a 2.5-3Ah cell to replace the HR1950FAUP or GP2200 cells. I only need 35A current capacity.

Neil.
Dec 17, 2005, 01:48 PM
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Ib4200


At 70 amps
Last edited by sjslhill; Dec 17, 2005 at 02:22 PM.
Dec 17, 2005, 10:13 PM
Kou
Kou
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If it get to 4500+ mah, I would say it is a good alternative to Lipo. Any opinion ?

MK
Dec 17, 2005, 10:25 PM
tic
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thunderscreech
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Sure, you can't run lipo at 220 amps.. for F5B applications, NIMH is the ONLY game in town


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