this post was submitted on 09 Jul 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"

Feel free to also check out

!utilitycycling@slrpnk.net

!bikewrench@lemmy.world

!bikecommuting@lemmy.world

!bikepacking@lemmy.world

!electricbikes@lemmy.world

!bicycle_touring@lemmy.world

!notjustbikes@feddit.nl

!longboard@lemmy.world

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I'm putting together my first ebike build out of an old mountain bike. I'm assembling the battery pack from scratch using salvaged 21700 cells. I don't imagine many people install fuses on their battery packs but given how violent these unprotected cells could be in the face of a short... I would sleep better at night if mine had one. Trouble is, I am having difficulty finding a suitable fuse. The vast majority of fuses I can locate online are automotive/marine/audio fuses usually maxing out at 32V. The pack I plan to build will be 14s lithium ion, and thus tops out at 58.8v. Has anyone else done a battery pack build with fuse? What fuse type/rating did you use? Where did you buy them? What brand?

Any info would be appreciated.

Thanks!!

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[–] willybe@lemmy.ca 1 points 1 year ago

That's not a bad idea. For this kind of amperage you would need a beefy fuse. Assuming a 58v 500w motor something like this.

https://www.digikey.ca/en/products/detail/littelfuse-inc/089107-5NXWS/5233824

58v x 7.5a = 435w, so this would blow before full power. A 10a fuse wouldn't blow until 580w which would probably be a better option.

The other comments are right, using good components and wires rated for the load, and ensure connections are tight and soldered where possible.