Quote:
Originally Posted by Katsunami
AFAIK, I could be wrong, but this calculator provides the same values.
For example, reset the calculator, and provide only Volts and Amps. If I put in 7.4V and 1.85A, then I get 13.69W as a result. Thus, a 1.85A, 7.4V battery would be able to deliver 13.69W of power for one hour. At least, as far as I understand it. (I'm not a physics major...)
If someone is convinced I'm wrong and explains/proves why, I stand corrected  |
It does indeed mean it can deliver the equivalent of 13.69W for one hour, but, for example, if the AAs can only delivery .5 amps without overheating then it would have to deliver that equivlency by delivering less wattage over more time, which may or may not be enough power to power whatever device the equivelent Li-ion battery may have been powering. Perhaps it used a Li-ion bat with the exact same mAh and voltage as the AAs but needed 2 amps, lasting for half an hour.....THAT's why the AAs may not deliver enough power, not just because of the mAh and voltage ratings.
(I'm making up the numbers, I have no idea how much current a typical AA can deliver, just saying not all battery types are equal. Also note that AA represents a size, not a chemistry or other power requirements. Someone could make a Li-ion AA, or AAA or AAAA I suppose.)
On the other hand, I agree that more standardization among battery sizes (and screws, and connectors) would make for a better world.
Or else, it would be neat if the standard was to to tell the on-demand battery manufacturing machine what power requirements, dimentions and connector type you needed, and it just made you a battery, like making a cookie out of dough.....
ApK