this post was submitted on 11 Aug 2023
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micromobility - Ebikes, scooters, longboards: Whatever floats your goat, this is micromobility

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Ebikes, bicycles, scooters, skateboards, longboards, eboards, motorcycles, skates, 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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[–] [email protected] 2 points 1 year ago* (last edited 1 year ago) (1 children)

One thing that I forsee helping in the future is having 18650/21700 batteries be interchangeable like normal AA batteries are.

If devices had sufficiently smart BMS modules then we could stick any batteries into them without any added fire risk and they could simply alert us when one was bad and needed to be replaced. Also with regards to fire risk there are mitigations that should be standard (like what tesla does).

If there were no "batteries included" and they were easy to add it would cut the cost and the e-waste by a ton.

[–] [email protected] 3 points 1 year ago (1 children)

New battery tech in the next 5 years is hopefully going to make lithium ion obsolete. Fingers crossed.

[–] [email protected] 2 points 1 year ago* (last edited 1 year ago) (2 children)

I've been hearing that my whole life and it hasn't actually improved much in the last 20. But yeah it would be great if you're right.

But smart BMS with easily user-replaceable batteries is tech we could use today. Furthermore you can buy packs like that off aliexpress right now.

Also, wanting to reuse batteries from an old device after upgrading will always be a problem.

[–] [email protected] 4 points 1 year ago

Bro, a lot of shit was still using NiMh batteries in 2003. I know a lot of the advancements haven't been very sexy, but charge discharge cycle count, energy density, rapid charging, high wattage discharge, these are all important. I'm going to stay hopeful.

[–] [email protected] 1 points 1 year ago (2 children)

The sodium 18650s are available on Alibaba for a few weeks :)

And for re-use my "extra" batteries are all interchangeable or able to be put to use elsewhere when the bike isn't in use. ( I've been considering an inverter for power outages).

[–] [email protected] 2 points 1 year ago (1 children)

Btw what are sodium 18650s? A new safer version?

[–] [email protected] 2 points 1 year ago (1 children)

Cheaper ( like 1/3? ), last longer ( more discharge /charge cycles ), can safely drain to 0.

[–] [email protected] 1 points 1 year ago (1 children)

Wtf that sounds awesome, any downside?

[–] [email protected] 2 points 1 year ago

Iess dense energy storage ( bigger size ).

[–] [email protected] 1 points 1 year ago

I mean you personally may be able to reuse them, but most people just throw their old escooter (or whatever) away when they get a new one, or at best resell it or donate it.

Image how cheap a new ebike could be if you only had to swap the batteries from your old one