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Thunder Power Pro Power 30C 3S 2250

Old 11-15-2008, 06:21 PM
  #1  
everydayflyer
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Default Thunder Power Pro Power 30C 3S 2250

Full disclosuer : Battery provided by Charlie Wang ,Thunder Power.

Here is the lattest offering from Thunder Power.

Cell IRs provided by Cell Pro 10.

First attachment original CBA firmware, second and third CBA II Ver. 2 firmware.

Higher rate discharges and burst profile by means of CC-400 from Cam Light Systems.

Note: Some of these discharges were to a DOD (depth of discharge) which I feel is not advisable for max. life. My standard is 80% of rated capacity.

Charles
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Last edited by everydayflyer; 11-16-2008 at 10:09 PM.
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Old 01-13-2009, 04:07 PM
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everydayflyer
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Default 1,000 watts plus discharger(s)

On the off chance that anyone is curious how I was(am) able to discharge at rate high rates not only in CC but also using programed burst modes.

Each CC-400 is capable of 400 watts continuious ( up to max of 150 Amp. / max. of 60 volts) . They will each run at max. of 500 watts for first 15 seconds.

One of mine has been modified to run at up to 700 watts but this is way beyound reason and completely voids the warranty.

During a typical 70 amp. 700 watts plus discharge CBA has a 7A (70 watts) load, front CC-400 35 amps. (350 watts) rear CBA 28 amps. (280 watts). Starting voltage for a 4S A123 is 14.4 volts so 1,008 watts.


Yes it is a fairly expensive set up at just over $1,000 but some would say I am semi serious about electric flight and batteries.

Charles
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Last edited by everydayflyer; 01-13-2009 at 05:17 PM.
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Old 01-13-2009, 05:15 PM
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pburt1975
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Hey charles, I try and catch all of your posts man. always great info on batteries, but shoot, no way can I add to the amount of data you put out there.
As always tho, thanks for taking the effort
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Old 01-13-2009, 07:42 PM
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HoaRC
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This is good info, but I don't understand it. Are you trying to measure the maximum power output of the batteries, in other words testing if they are truly 30C?
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Old 01-14-2009, 04:30 AM
  #5  
everydayflyer
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Why does an aircraft have so much more power with brand X than with brand y when both are rated the same?

Because brand X maintains more volts at 10,20,30,40,50 or more amps, than brand y.

Watts is what turns props. Volts time amps. equals watts.

A 3S that hold 11 volts at 20 amps delivers 220 watts .

If voltage drops to 10 volts then only 200 watts or 10% less power.If it drops to 9 volts then only 180 watts are produced.

Also a battery that drops lower at any give load will run hotter and lose capacity sooner.

Then there is the issue of a battery being labeled as 2200 mAh but at 10C delivers 2000 mAh and at 20C delivers 1700 mAh and gets so hot it only last 20 cycles or so.

Truth is with less than $100 park flyers that get 10 min flights on bargin LiPolys it makes little difference. On the other hand if you really need 1000 watts from a 3300 mAh 4S it needs to deliver some where around 70 amps. at 14 volts without burning your finger after the flight and it would be nice if it lasted 100 flights or more.


Charles
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Old 01-31-2009, 07:08 AM
  #6  
Larry3215
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Thats some awesome toys you have there Charles!

Thanks for keeping us in the loop!
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