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You might be lactose intolerant, in which case taking lactase enzyme pills immediately before eating may relieve your discomfort.

Batteries often have a rating like 3250mAh, which is arguably clearer than 3.25Ah, especially on a datasheet.

That would be ideal, but I think at this point there's just too much marketing momentum using mAh, and switching to mWh would be too confusing to consumers. But yeah, I agree, mWh is definitely the most appropriate unit to use.

The vast majority of cell phones use a single-cell Li-Ion battery, so their capacities can be directly compared using mAh. Laptops almost always contain multi-cell Li-Ion batteries, so their capacity cannot be directly compared using mAh (e.g. a 4S battery rated for 2500mAh has more energy than a 3S battery rated for 3000mAh).

So why don't we use Wh for phones too? Simply because manufacturers would rather advertise a battery size of five thousand mAh (wow, so much capacity!) instead of 19 Wh.

The same issue happens with portable USB battery packs - they're all advertised in mAh even though they use a wide variety of chemistries and cell configurations internally. What manufacturers do is take the total Wh of the pack and convert it back to the equivalent mAh of a single-cell Li-Ion. It's annoying, and I really wish they would just use Wh directly.

I'm probably going to end up back on Reddit to some extent, but I think Lemmy will stay in my rotation of stuff I open when I'm bored. Or until they inevitably kill old.reddit.com, then I'll be outta there for good...