This question is not clear what you are asking and what are you reducing 50%. Are you reducing the battery pack to half its size and making it 200 Volts? or something elseIf my usage is lower 50%, cause i change motor, that will give me 320Ah...and I could the same batterypack is now rated 128kwh..( i guess the same goes for amps) But why kwh?
Appears to me they doubled the ah so there by reduced the voltage so the same size battery is just 48s2p vs 96s1p. they multipied the 320Ah by 400v instead of 200v. Easy enough mistake to make.If my usage is lower 50%, cause i change motor, that will give me 320Ah...and I could the same batterypack is now rated 128kwh..( i guess the same goes for amps) But why kwh?
Not "amp/hr" or "watt/hr" (which would be the nonsensical amps per hour or watts per hour), but "amp-hr" and "watt-hr", correctly given as "Ah" and "Wh" (well, you had "wh", but at least you didn't have a nonsensical "/" thereamp/hr (Ah) or a watt/hr (wh) is a capacity
Oops, good catch, I fixed the original postNot "amp/hr" or "watt/hr" (which would be the nonsensical amps per hour or watts per hour), but "amp-hr" and "watt-hr", correctly given as "Ah" and "Wh" (well, you had "wh", but at least you didn't have a nonsensical "/" there).
Amp-hours is charge capacity; watt-hours is energy capacity... but yes, they are capacities rather than rates.
yeah, its like saying only 12V acid batteries at the store...Because 12v Lead-Acid batteries are standardized. When somebody tells you 400v Lithium-Ion, you actually don't know much about it from that alone - chemistry, number of cells in series or in parallel...
ok, my feeling tells me that using kwh is just advertising when not telling the nominal voltage of the highvoltage-battery. As cricketo mentioned "Because 12v Lead-Acid batteries are standardized. "... but example when i looking at high voltage batteries system as in a electric cars the advertising, it usually goes like "I got this badass kwh battery package for you to buy... but i cant tell you the nominal voltage of the battery"I dont understand why you are asking this question, do you not know the relationship between volts, amps and watts. If you have two then you know the third because of Watt's Law.
The application is different, and kWh gives you a better idea of the capability. So specifically an average electric car will require a certain number of Wh to travel 1km of distance. Say 200Wh per 1km. It doesn't matter at what exact voltage it's done, it will still be roughly the same amount of energy whether say battery is 350V, 400V or 450V. So then how do you compare a car that has a 350V battery to a 450V ? The capacity in kWh helps there, providing a single number.yeah, its like saying only 12V acid batteries at the store...
ok, my feeling tells me that using kwh is just advertising when not telling the nominal voltage of the highvoltage-battery. As cricketo mentioned "Because 12v Lead-Acid batteries are standardized. "... but example when i looking at high voltage batteries system as in a electric cars the advertising, it usually goes like "I got this badass kwh battery package for you to buy... but i cant tell you the nominal voltage of the battery"
Is it 12VDC/64kwh or 380VDC/64kwh battery in the car? heck i dunno but it would be much easier if they labeled the voltage and kwh at the batterypack..
Science and feelings don't mix - you'd fit in well in America 😂yeah, its like saying only 12V acid batteries at the store...
ok, my feeling tells me that using kwh is just advertising...
Elon once commented on the topic [of measurements] that measuring thrust in newtons when building an orbital booster is stupidScience and feelings don't mix - you'd fit in well in America 😂
When you multiply power (kW) by time (seconds) you get Joules, which is the direct measure of ENERGY.
When you muliply current (Amps) by time (seconds) you get Coulombs, which is electrical CHARGE (not battery charge)
Using hours vs seconds gets a bastardized, non SI unit, but it remains ENERGY and electrical CHARGE, where a kEh is 3600 Joules of energy and Ah is 3600 Coulombs of electrical charge.
Physics, not feelings.