A total newbie question, but something I'd like to know nonetheless.
You can buy AA batteries with a rating of 2300mAh (if not higher), as you know, AA batteries are quite diminutive in size.
Compare with my laptop's batteries, almost brick-like in comparison, these are rated for 4700mAh Lithium-Ion
So how can an AA battery, but a fraction of the volume of my laptop's batteries, have half the capacity?
Or am I missing something?
Thanks
You need to factor in the voltage, and look at the total power in Watt hours.
AA =1.5V * 2.3A = 3.45 Watt Hours
Laptop Battery = 12V (see rating) * 4.7A = 56.4 Watt Hours
The AA battery is a single 1.5 volt cell. Your laptop battery may be
14.8 volts, so it can hold about 20 times the energy of the AA cell.
Yes, you are missing the electrochemistry differences of various storage devices. They all have their place and they all are different.
As a general rule rechargeable batteries have a lower capacity for a given size.
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