I felt crazy for a second, but you both have it backwards. Running 2 batteries in series means doubling power, (12 v + 12v = 24v power) running the same 2 batteries in parallel means the same amount of power, but double the amp/hr.
Source: Am an electrician with shit memory, google confirmed it.
the capacity would be the same. the runtime is just lower because you draw more power
if you draw the same wattage (NOT amperage)from a 3Series or 3Paralell pack, it will last for the same time
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I felt crazy for a second, but you both have it backwards. Running 2 batteries in series means doubling power, (12 v + 12v = 24v power) running the same 2 batteries in parallel means the same amount of power, but double the amp/hr.
Source: Am an electrician with shit memory, google confirmed it.