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Bondonutz
Fat Kid Engineering
 
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Join Date: Jun 2009
Location: Hot as Hell West Central Coast Florida
07.13.2009, 03:53 PM

Quote:
Originally Posted by BrianG View Post
I can think of a couple reasons why they don't:
- 2s packs are cheaper for companies to send for testing.
- A lot of racers, especially 1/10 scale, use 2s packs. Many people won't make the connection that if a 2s pack performs well, then a 4/5s pack made of the same cells will perform just as well. Gotta remember that many people are fairly new and/or not knowledgable about how these things work.

Also, "field" testing 4s and 5s packs should be easy enough, but bench testing becomes problematic. To get 100A+ out of a 4s or 5s pack is going to generate a considerable amount of heat. And components that can handle that aren't cheap. 2s is far easier power-wise. 7.4v at 150A is "only" 1,110W, but 18.5v @ 150A = 2,775W!
Mr.B, That all makes perfect sense and some of what you wrote I've already thought myself. But, I own 20 Lipos and 2 of them are a 2s. Hence my dissapointment of rather seeing the higher voltage tests.


I retired from RC, now life is all about guns and long range shooting.
   
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