...C rating is C rating no matter what the configuration.?
True but mah determines the available amperage the packs can supply.
With the Neu 1521 assuming its a 1Y or 1.5D, the Hyperion 5000, 6s, 35C pack will really shine and power this setup like it should. The 3000's would need to be configure in 6s would be less than required.
Only differance is going to be your run time due to the different mah ratings. Your power level will be identical (assuming same C rating on both scenarios).
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Only differance is going to be your run time due to the different mah ratings. Your power level will be identical (assuming same C rating on both scenarios).
This is incorrect. The "C" in the c-rating stands for "capacity". a 35c 5000mah pack can discharge at 175amps continuously(35 times the 5k mah or 5amp/hour CAPACITY). A 35c 3000mah pack can only discharge at 105 amps continuously(35 times the 3kmah or 3 amp/hour CAPACITY). With equal "C-ratings", the higher capacity pack can provide more current and therefore more power.