Kind of seems like you have to convert to watts.
12V x 9A = 108 Watts
6V x 9A = 54 Watts
Technically, it would be watt hours. If your battery is capable is supplying 9 amps for one hour (or 1 amp for 9 hours) at 12V, it has basically twice as much energy in it as a battery capable of providing the same current at 6V.
Now, if you had a pair of 6V 9ah batteries, for a total of 6V 18ah.....You might beat the 12V 9ah battery due to losses in the conversion from 12V down to 6V. Hence the reason that the experiment above didn't show a perfect 2:1 ratio.
On the other hand, it seems pointless to do so, since the cost of the two 6 volt batteries plus wiring etc to get it all hooked up would most likely be greater than the cost of the single 12V.
Sent from my SAMSUNG-SM-G870A using Tapatalk
12V x 9A = 108 Watts
6V x 9A = 54 Watts
Technically, it would be watt hours. If your battery is capable is supplying 9 amps for one hour (or 1 amp for 9 hours) at 12V, it has basically twice as much energy in it as a battery capable of providing the same current at 6V.
Now, if you had a pair of 6V 9ah batteries, for a total of 6V 18ah.....You might beat the 12V 9ah battery due to losses in the conversion from 12V down to 6V. Hence the reason that the experiment above didn't show a perfect 2:1 ratio.
On the other hand, it seems pointless to do so, since the cost of the two 6 volt batteries plus wiring etc to get it all hooked up would most likely be greater than the cost of the single 12V.
Sent from my SAMSUNG-SM-G870A using Tapatalk
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