I get that, for a house/solar battery, it sort of makes sense as your typical energy usage would be measured in kWh on your bills. For the smaller devices, though, the chargers are usually rated in watts (especially if it’s USB-C), so why are the batteries specified in amp hours by the manufacturers?
In: 7
In RC hobbies like quadcopters or whatever, we care about voltage (directly or indirectly, like 4S = 4 LiPo cells = ~16-17V) and can use mAh to directly compare between batteries of same cell count.
People intuitively (if not explicitely) understand a 6S 1000mAh battery has a lot more capacity than a 4S 1000mAh.
Yeah we could use watt-hours instead but since we also always care about battery voltage (more than overall battery capacity) it doesn’t matter. It is implicit in the specification (4S 1000mAh, 4S 750mAh, 6S 1200mAh, 1s 300mAh, etc).
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