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Idiot_Savant_Tinker t1_ivgtqvi wrote

Reply to comment by Priff in Honda Electric Moped Coming - Step-through electric likely to be announced this year. by speckz

I have a big brushless DC motor from an electric lawnmower that is begging to be put on something. I've got the controller figured out, but then I look online and see people building these battery packs by spot welding tons of cells together that they've taken out of discarded laptops or whatever, and I just lose motivation.

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Priff t1_ivgv3vj wrote

You can take a battery pack from one of those kickbike scooters, they're usually 40v.

Another option is ordering a battery pack, lifepo packs come in loads of sizes with built in bms and everything pretty cheap.

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RaydelRay t1_ivh7oe5 wrote

How well would 2 Dewalt 60v 6Ah work? $200 for 2 on sale.

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[deleted] t1_ivhe4vu wrote

[deleted]

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i7-4790Que t1_ivizsyl wrote

Can get 180Wh worth of Dewalt batteries (+ charger) for under $100 right now at Home Depot with Holiday promos. The 6 Ah XR in that bundle would have a far superior Samsung 30T 21700. 10 per pack. 5S2P config.

There's also value in utility. Especially if you are invested into a decent power tool platform. (Milwaukee, Dewalt, Makita) Your money goes further if you have a bunch of devices that can share the same battery. I run as much stuff as I can off 5.0 Ah Makita packs I basically paid no more than $7/Ah on. (Buy sales, batteries get super cheap)

Wouldn't exactly call used Eve cells that you might have to rebuild sooner rather than later a good value long term. They have a paltry 7.65A rated cell with comparatively low capacity, probably closer to 2-2.2 Ah since its a refurb/used 18650 from a 3rd rate manufacturer.

Samsung 30Ts blow that Eve crap out of the water. 35A cell, up to 70A @ 18V in 5S2P.

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Idiot_Savant_Tinker t1_ivhespj wrote

Where I live there's some company like bird or lime that has a bunch of scooters. Sometimes I see them broken and thrown in the ditch, maybe they have a battery I can use...

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