this post was submitted on 23 Nov 2023
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micromobility - Ebikes, scooters, longboards: Whatever floats your goat, this is micromobility
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Ebikes, bicycles, scooters, longboards, unicycles: Whatever floats your goat, this is all things micromobility!
"Transportation using lightweight vehicles such as bicycles or scooters, especially electric ones that may be borrowed as part of a self-service rental program in which people rent vehicles for short-term use within a town or city.
micromobility is seen as a potential solution to moving people more efficiently around cities"
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Just as people start to get comfortable to the somewhat-odd kilowatt-hour unit of energy -- for reference, the SI unit for energy is the Joule; 1 kWh == 3.6 MJ -- here comes the cursed non-metric unit of hp-h lol
That aside, this was a decent albeit short read about engineering and compromise. Where engineers really shine is when working within constraints, whether it be for vehicles, computers, or buildings. From civil engineering, there's an informal saying that anyone can build a bridge that will stand, but few can build a bridge that will stand while using the least budget and amount of material.
I wonder why they don't just convert hph to gallons of gasoline equivalent at that point. Or maybe (US) fluid ounces is more common on scooters
At least kWh actually tells you the energy in the cell (in optimal comditions). Electronics still use Ah which is useless without disclosing the cell chemistry or mean potential
Was the mention of US fl oz a joke or are there seriously scooters that specify their fuel or battery capacity in US fl oz equivalent?
As for amp-hour as a unit, I agree it's not convertible to watt-hours without the other cell parameters, and many consumer electronics will fail to specify this in detail. In some contexts like RC aircraft though, where the cell chemistry is well-known, amp-hour could be used along with only the max C-rate to compute an allowable charge rate in amps. Neither the cell/pack voltage nor cell configuration is needed here, provided the rating is accurate for the pack in question.
it was a joke but I did a brief search and it seems the tanks are listed in litres (nice) or decimal gallons (sacrilege)
Hopefully they at least used US gallons for some sense of consistency lol