The Energiser rechargeable AAA I happen to have here is 800mAh.
So exactly four standard rechargeable AAAs. Not bad really.
Edit: As explained below, this is incorrect, as I didn't take voltage into account.
You must compare watt-hours (or use joules, if you like) for it to be meaningful. AAA voltage is 1.5V, lithium ion voltage is 3.7V or 4.2V or something, which means that each "mAh" is worth several times as much as one from a AAA battery.
The iPhone 14 Pro battery is about 12Wh. A single AAA battery has about 1.9Wh, according to google. So, 6 AAA batteries, optimistically, excluding other factors that could raise the count. Using your number of 800mAh*1.5V=1.2Wh, which would mean 10 AAA batteries.
Though I think I’ve seen up to 1200.
There are other non-rechargeable chemistries that are far more energy dense than AAA batteries, and those might be interesting to discuss.
I guess it kinda worked when everything was 1.5V but even then it was pretty stupid, and it’s been a while.
And I feel like we’ve regressed somehow? Didn’t every smartphone use to advertise battery capacity in (m)Wh, like laptops? I feel like just a few years ago that was the prominent measure, and you’d get voltage and Ah as side-notes, e.g. the iPhone 12 wiki page states
> 3.83 V 10.78 Wh (2,815 mAh)
And yet it’s still dumb, because the actual energy density would let you make the exact same comparison anyway, and it would allow for easier comparison with other battery types or contexts.
> If I need a phone with a large battery, and all phones are 3.8 volts (yes, I do mean 3.7-4.2) then comparing mAh is useful
It’s not, there’s a >10% difference between the top and the bottom of the range.
Just give actual energy values, it’s strictly more useful.
