RCU Forums - View Single Post - Battery longevity
View Single Post
Old 02-20-2006 | 02:56 PM
  #55  
can773's Avatar
can773
My Feedback: (1)
 
Joined: Jan 2002
Posts: 2,286
Likes: 0
Received 2 Likes on 2 Posts
From: Calgary, AB, CANADA
Default RE: Battery longevity

ORIGINAL: Big Owdlad


ORIGINAL: can773

ORIGINAL: Fred Marks


To the contrary: Lots of evidence in the following threads. All these come from independent testers and modelers, not from Kokam or TP. The attached is a plot of the temperature data from the battery test data taken by a massive set of modelers who did tests with the CBA. The KOK 3200has performance superior to any RC cell as seen in the data from Wattflyer. The internal resistance is so much lower that RC Tester plots show the KOK 3200 delivering 64 amps continuously with temperature just slightly exceeding 140 deg F.

http://www.wattflyer.com/forums/showthread.php?t=3628

http://www.rcgroups.com/forums/showt...ghlight=TESTER

http://www.rcgroups.com/forums/forumdisplay.php?f=336

http://www.rcgroups.com/forums/showthread.php?t=473158

http://www.wattflyer.com/forums/showthread.php?t=1661

www.trextuning.com
Fred

Quite frankly CBA and other testing is not remotely close to results myself and others see while running TP packs in F3A applications.

You can quote all the static air testing you want where those performing the tests let the temps soar to rediculously high values....its not realistic in an F3A application. Our packs see a huge amount of forced air cooling through the entire flight...I have rarely ever seen one of my packs go above 50C (122F) post flight. Testing a pack and letting it run at 180F and having a failure is not representative of real world.

Fact is the Prolites are great cells in real world applications, which is where it matters.

To the original posting at hand...my highest cycle pack is sitting about 75 cycles (TP 5300) perfect balance and the same V under load that it had as new....not noticable degredation that I can tell. I have "heard" of others running well over 100 cycles, but ExFokkerFlyer is the only one that I trust has valid #'s I think a lot of people guess at their cycles! and are way off!

If you have 4 packs of Prolites and claim 200 cycles each you would have needed to flown 800 flights since about June of 2005!
I was the Only person in the Uk to compete at f3a in England Last year using Kokam 10s2p 3400mAh packs in my Lazulite

These packs are fully insulated (Wrapped in Inpad) with no airflow over them. After flying the P05 schedule the temperature of these packs never exceeded more than 45 Centigrade even in hot conditions.

Chad

On your posting on the GBRCAA forum you say you use an Axi 5330/24. I would welcome any Info on this set up i.e. Prop Current, etc.

Big Owdlad
Hi Big Owdlad,

Can you direct me to that post? I have never used an Axi, only Plettenbergs?