Robert Hoehne wrote: > uhmmm, sorry adding batteries doesn't work that way. If you put two in > series, you do get twice the voltage across them, but you keep the same > current capacity. Oops, I have it backwards. Grrrr, I always mix them up. > If you put the batteries in parallel, you'll get the orginal voltage > but twice the current capacity. So you either get 9.6V at 9AH or > 19.2V at 4.5AH Okay, the reason I want to double the voltage is because my regulator has input voltage range of 9 to 26 volts. Does anybody know if it would make a difference in running time if it was 19.2v 4.5AH (serial) vs 9.6v 9AH (parallel) assuming that the power regulator voltage range is 9-26v? Also, if I were to use a regulator with a lower dropoff voltage would I get more running time? I hate this power management stuff, seems like voodoo magic sometimes.. -- Doug
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