Re: Manufacturers are spending more
3k MaH. Three thousand million amp-hours? I want one of those!
Ok, allow me to clarify how it works:
'bigger' unit multipliers get a capital. 'smaller' dividers get a lower case.
M = Mega = 1,000,000
K = Kilo = 1000
m = milli = 0.001.
The unit itsself is to be in lower case, except (for gramatical reasons) if the unit is named after a person. Yes, it's somewhat arbitary. The amp, or Ampere, is one of those. So it gets a capital. The hour is not, so it gets lower case. Ah. Or A h.
That makes the first number you used 3K mAh. Got it?
Now, you've also written K amd m together: Those cancel out. You've written 'three thousand one thousandths of an Ampere hour.' It's cumbersome. Don't do it.
That gets you down to 3Ah. There. Isn't that much clearer?
Also note that this doesn't actually measure the battery energy capacity. It measures the battery charge capacity, a measurement that is very convenient when calculating how long it takes to charge or discharge a battery.