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Quote: Originally Posted by yooki |
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How much heavier are these things than an equivalently sized lipo? |
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Unless you like to fly 35 flights in between charges and need 10,000mah to do so, you can't compare A123's capacity for capacity. A single 2300 can put out about eight times the amps of a 5200 li-ion.
The main reason people using li-ion's use such high capacity is simply to be able to deliver the required amps of their system, and most people will never use more that 1/2 the battery's capacty on a given day of flying.
Therefor, it is more sensible to compare a 2300 A123 to a 5200 li-ion. The Li-ion/regulator weighs about 8 ounces and is good for about 8 amps continuous. Two of those and a 2600/reg for ignition weighs about 21 ounces. The A123 2300 weighs about 6 ounces and is good for about 60 amps continuous and can easily power a 100cc bird by itself. Still, for a fair comparison, two of those and one A123 1100mah (found in the B&D VPX battery packs) weighs about 15 ounces.